Project Manual
City of Alameda
Mastick Senior Center
Roof Drain Improvements
Interactive Resources
Project No. 2020-027-01
12/5/2025
Prepared for:
Chandni Patel
City of Alameda
950 W. Mall Square
Alameda, CA 94501
Project Address:
1155 Santa Clara Ave
Alameda, CA 94501
117 Park Place
Richmond, CA94801
(510) 236-7435
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
SEALS PAGE 000107 - 1
SECTION 000107 - SEALS PAGE
1.1 DESIGN PROFESSIONALS OF RECORD
A. Architect:
Andrew Butt
Interactive Resources
117 Park Place,
Richmond, CA 94801
510-236-07435
Seal
B. Civil Engineer:
Michael Vidra, PE
CSWST2
5870 Stoneridge Mall Road, Suite 207
Pleasanton, CA 94588
925-787-4982
Seal
C. Mechanical Engineer:
James Dyer, PE
EDesignC
582 Market Street, Suite 400
San Francisco, CA 94104
415-963-4303
Seal
END OF SECTION 000107
LS PAGE
Seal
LICENSED ARCHITECT
No. C 29,669
ANDREW M BUTT
.
REN. 6-30-27STATE OF CALIFORNIA
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
TABLE OF CONTENTS 000110 - 1
SECTION 000110 – TABLE OF CONTENTS
DIVISION 00 – PROCUREMENT AND CONTRACTING REQUIREMENTS
00 01 01 Project Title Page
00 01 07 Seals Page
00 01 10 Table of Contents
00 01 15 List of Drawing Sheets
DIVISION 01 - GENERAL REQUIREMENTS
01 10 00 Summary of Work
DIVISION 02 - EXISTING CONDITIONS
02 41 19 Selective Demolition
DIVISION 03 - CONCRETE
[Not Used]
DIVISION 04 - MASONRY
[Not Used]
DIVISION 05 - METALS
[Not Used]
DIVISION 06 - WOOD AND PLASTICS
[Not Used]
DIVISION 07 - THERMAL AND MOISTURE PROTECTION
07 54 16 Ketone Ethylene Ester (KEE) Roofing
07 62 00 Sheet Metal Flashing and Trim
DIVISION 08 - OPENINGS
[Not Used]
DIVISION 09 - FINISHES
09 23 00 Gypsum Plastering Repair
09 91 00 Painting
DIVISION 10 - SPECIALTIES
[Not Used]
DIVISION 11 - EQUIPMENT
[Not Used]
DIVISION 12 - FURNISHINGS
[Not Used]
DIVISION 21 - FIRE SUPPRESSION
[Not Used]
DIVISION 22 – PLUMBING
See Plumbing Drawings
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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Alameda, CA 94501
TABLE OF CONTENTS 000110 - 2
DIVISION 23 - HEATING, VENTILATING, AND AIR-CONDITIONING (HV AC) [Not Used]
DIVISION 26 - ELECTRICAL
[Not Used]
DIVISION 27 - COMMUNICATIONS
[Not Used]
DIVISION 28 - ELECTRONIC SAFETY AND SECURITY
[Not Used]
DIVISION 31 - EARTHWORK
See Civil Drawings
DIVISION 32 – EXTERIOR IMPROVEMENTS
See Civil Drawings
DIVISION 33 - UTILITIES
See Civil Drawings
END OF SECTION 000110
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
LIST OF DRAWING SHEETS 000115 - 1
SECTION 000115 - LIST OF DRAWING SHEETS
1.1 LIST OF DRAWINGS
List of Drawings: Drawings that will be enumerated in the Owner/Contractor Agreement as part of the Contract Documents are the following Drawings and other drawings of type indicated, as modified by subsequent Addenda and Modifications:
NUMBER SHEET TITLE
A001 Cover Sheet
CIVIL
C01 Interim Roof Drain Improvements
ARCHITECTURAL
A100 Site Plan
A101 First Floor Demolition Reflected Ceiling Plan
A102 Demolition Roof Plan
A103 First Floor Reflected Ceiling Plan
A104 Roof Plan
A201 Exterior Elevations
A501 Details
A502 Details
PLUMBING
P001 Plumbing Cover Sheet
P101 Plumbing Roof Plan
END OF SECTION 000115
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
SUMMARY 011000 - 1
SECTION 011000 - SUMMARY
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Project information.
2. Work covered by Contract Documents.
3. Miscellaneous provisions.
1.3 DEFINITIONS
1.4 PROJECT INFORMATION
A. Project Identification: Mastick Senior Center – Roof Drain Improvements
1. Project Location: 1155 Santa Clara Ave, Alameda, CA 94501 B. Owner: City of Alameda
1. Facilities Project Manager:
Chandni Patel
950 W Mall Square. Alameda, CA 94501
510.603.9950
C. Architect: Interactive Resources
1. Architect of Record:
Andrew Butt, AIA
Interactive Resources
117 Park Pl, Richmond, CA 94801
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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Alameda, CA 94501
SUMMARY 011000 - 2
D. Architect's Consultants: Architect has retained the following design professionals, who have prepared designated portions of the Contract Documents:
1. Civil Engineer:
a. Michael Vidra, PE, LEED AP, QSD/QSP
CSWST2
5870 Stoneridge Mall Road, Suite 207, Pleasanton, CA 94588
2. Plumbing Engineer:
a. James Dyer, PE
EDesignC
582 Market Street, Suite 400, San Francisco, CA 94104
E. The Work of Project is defined by the Contract Documents and includes, but is not limited to, the following:
1. Replacement of roof drains and abandonment of existing rainwater leaders within walls.
2. Patching of PVC KEE membrane roofing at areas affected by new scuppers and drain replacements.
3. Site work limited to the above-grade downspout discharge onto rip rap, as detailed on the drawings, and other work specifically indicated in the Contract Documents.
1.5 WORK UNDER OWNER'S SEPARATE CONTRACTS
A. Work with Separate Contractors: Cooperate fully with Owner's separate contractors, so work on those contracts may be carried out smoothly, without interfering with or delaying Work under this Contract or other contracts. Coordinate the Work of this Contract with work performed under Owner's separate contracts.
B. Concurrent Work: Owner will award and will assign to Contractor separate contract(s) for the following construction operations at Project site. Those operations will be conducted simultaneously with Work under this Contract.
1. ADA Upgrades project.
1.6 COORDINATION WITH OCCUPANTS
A. Full Owner Occupancy: Owner will occupy Project site and existing adjacent building(s) during entire construction period. Cooperate with Owner during construction operations to minimize conflicts and facilitate Owner usage. Perform the Work so as not to interfere with Owner's day - to-day operations. Maintain existing exits unless otherwise indicated.
1. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from Owner and approval of authorities having jurisdiction.
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SUMMARY 011000 - 3
1.7 WORK RESTRICTIONS
A. Comply with restrictions on construction operations.
1. Comply with limitations on use of public streets, work on public streets, rights of way, and other requirements of authorities having jurisdiction.
B. On-Site Work Hours: Comply with City requirements.
1.8 SPECIFICATION AND DRAWING CONVENTIONS
A. Specification Content: The Specifications use certain conventions for the style of language and the intended meaning of certain terms, words, and phrases when used in particular situations.
These conventions are as follows:
1. Imperative mood and streamlined language are generally used in the Specifications. The words "shall," "shall be," or "shall comply with," depending on the context, are implied where a colon (:) is used within a sentence or phrase.
2. Text Color: Text used in the Specifications, including units of measure, manufacturer and product names, and other text may appear in multiple colors or underlined as part of a hyperlink; no emphasis is implied by text with these characteristics.
3. Hypertext: Text used in the Specifications may contain hyperlinks. Hyperlinks may allow for access to linked information that is not residing in the Specifications. Unless otherwise indicated, linked information is not part of the Contract Documents.
4. Specification requirements are to be performed by Contractor unless specifically stated otherwise.
B. Drawing Coordination: Requirements for materials and products identified on Drawings are described in detail in the Specifications. One or more of the following are used on Drawings to identify materials and products:
1. Terminology: Materials and products are identified by the typical generic terms used in the individual Specifications Sections.
2. Abbreviations: Materials and products are identified by abbreviations scheduled on Drawings.
3. Keynoting: Materials and products are identified by reference keynotes referencing Specification Section numbers found in this Project Manual.
PART 2 - PRODUCTS (Not Used)
PART 3 - EXECUTION (Not Used)
END OF SECTION 011000
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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Alameda, CA 94501
SELECTIVE DEMOLITION 024119 - 1
SECTION 024119 - SELECTIVE DEMOLITION
PART 1 - GENERAL
1.1 SUMMARY
A. The Work of this Section Includes:
1. Demolition and removal of selected portions of exterior or interior of building or structure and site elements.
2. Removal and salvage of existing items for delivery to Owner and removal of existing items for reinstallation.
B. Related Requirements:
1. Section 011000 "Summary" for restrictions on use of the premises, Owner -occupancy requirements, and phasing requirements.
1.2 DEFINITIONS
A. Remove: Detach items from existing construction and legally dispose of off -site unless indicated to be removed and salvaged or removed and reinstalled.
B. Remove and Salvage: Detach items from existing construction, in a manner to prevent damage, and deliver to Owner as indicated.
C. Remove and Reinstall: Detach items from existing construction, in a manner to prevent damage; prepare for reuse; and reinstall where indicated.
D. Existing to Remain: Existing items of construction that are not to be removed.
1.3 MATERIALS OWNERSHIP
A. Unless otherwise indicated, demolition waste becomes property of Contractor.
B. Historic items, relics, antiques, and similar objects including, but not limited to, cornerstones and their contents, commemorative plaques and tablets, and other items of interest or value to Owner that may be uncovered during demolition remain the property of Owner.
1. Carefully salvage in a manner to prevent damage and promptly return to Owner.
1.4 COORDINATION
A. Arrange selective demolition schedule so as not to interfere with Owner's operations.
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SELECTIVE DEMOLITION 024119 - 2
1.5 PREINSTALLATION MEETINGS
A. Predemolition Conference: Conduct conference at Project site.
1. Inspect and discuss condition of construction to be selectively demolished.
2. Review structural load limitations of existing structure.
3. Review and finalize selective demolition schedule and verify availability of demolition personnel, equipment, and facilities needed to make progress and avoid delays.
4. Review requirements of work performed by other trades that rely on substrates exposed by selective demolition operations.
5. Review areas where existing construction is to remain and requires protection.
6. Review and finalize protection requirements.
7. Review procedures for noise control and dust control.
8. Review storage, protection, and accounting for items to be removed for salvage or reinstallation.
1.6 INFORMATIONAL SUBMITTALS
A. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for dust control and, for noise control. Indicate proposed locations and construction of barriers.
B. Schedule of Selective Demolition Activities: Indicate the following:
1. Detailed sequence of selective demolition and removal work, with starting and ending dates for each activity. Ensure Owner's on-site operations are uninterrupted.
2. Temporary interruption of utility services. Indicate how long utility services will be interrupted.
3. Coordination for shutoff, capping, and continuation of utility services.
4. Coordination of Owner's continuing occupancy of portions of existing building and of Owner's partial occupancy of completed Work.
C. Warranties: Comply with e xisting roof warranty in effect by Garland. Existing warranty available upon request.
1.7 CLOSEOUT SUBMITTALS
A. Inventory: Submit a list of items that have been removed and salvaged.
1.8 FIELD CONDITIONS
A. Owner will occupy portions of building immediately adjacent to selective demolition area.
Conduct selective demolition so Owner's operations will not be disrupted.
B. Notify Architect of discrepancies between existing conditions and Drawings before proceeding with selective demolition.
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SELECTIVE DEMOLITION 024119 - 3
C. Hazardous Materials:
1. It is not expected that hazardous materials will be encountered in the Work. a. If materials suspected of containing hazardous materials are encountered, do not disturb; immediately notify Architect and Owner. Hazardous materials will be removed by Owner under a separate contract.
D. On-site sale of removed items or materials is not permitted.
1.9 WARRANTY
A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during selective demolition, by methods and with materials and using approved contractors so as not to void existing warranties. Notify warrantor before proceeding. Existing warranties include the following:
1. 30 Year NDL Roof Warranty
The Garland Company
Warranty Reference Number: 25-0250-US
Contact: Doug Clark
Email: [email protected]
Phone: 925.784.6701
B. Notify warrantor on completion of selective demolition, and obtain documentation verifying that existing system has been inspected and warranty remains in effect. Submit documentation at Project closeout.
PART 2 - PRODUCTS
2.1 PERFORMANCE REQUIREMENTS
A. Regulatory Requirements: Comply with governing EPA notification regulations before beginning selective demolition. Comply with hauling and disposal regulations of authorities having jurisdiction.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verify that utilities have been disconnected and capped before starting selective demolition operations.
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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SELECTIVE DEMOLITION 024119 - 4
3.2 PREPARATION
A. Temporary Shoring: Design, provide, and maintain shoring, bracing, and structural supports as required to preserve stability and prevent movement, settlement, or collapse of construction and finishes to remain, and to prevent unexpected or uncontrolled movement or collapse of construction being demolished.
1. Strengthen or add new supports when required during progress of selective demolition.
B. Temporary Protection: Provide temporary barricades and other protection required to prevent injury to people and damage to adjacent buildings and facilities to remain.
1. Provide protection to ensure safe passage of people around selective demolition area and to and from occupied portions of building.
2. Provide temporary weather protection, during interval between selective demolition of existing construction on exterior surfaces and new construction, to prevent water leakage and damage to structure and interior areas.
3. Protect walls, ceilings, floors, and other existing finish work that are to remain or that are exposed during selective demolition operations.
4. Cover and protect furniture, furnishings, and equipment that have not been removed.
C. Existing Items to Remain: Protect construction indicated to remain against damage and soiling during selective demolition. When permitted by Architect, items may be removed to a suitable, protected storage location and cleaned and reinstalled in their original locations after selective demolition operations are complete.
3.3 UTILITY SERVICES AND BUILDING SYSTEMS
A. Existing Services/Systems to Remain: Maintain utilities and building systems and equipment to remain and protect against damage during selective demolition operations.
1. Maintain fire-protection facilities in service during selective demolition operations.
B. Existing Services/Systems to Be Removed, Relocated, or Abandoned: Locate, identify, disconnect, and seal or cap off utilities and building systems serving areas to be selectively demolished.
1. Arrange to shut off utilities with utility companies.
2. If disconnection of utilities and building systems will affect adjacent occupied parts of the building, provide temporary services/systems that bypass area of selective demolition and that maintain continuity of services/systems to those parts of the building.
3. Demolish and remove existing building systems, equipment, and components indicated on Drawings to be removed.
a. Piping to Be Removed: Remove portion of piping indicated to be removed and cap or plug remaining piping with same or compatible piping material. b. Equipment to Be Removed: Disconnect and cap services and remove equipment and components.
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SELECTIVE DEMOLITION 024119 - 5
4. Abandon existing building systems, equipment, and components indicated on Drawings to be abandoned in place.
a. Piping to Be Abandoned in Place: Drain piping and cap or plug piping with same or compatible piping material and leave in place.
3.4 SELECTIVE DEMOLITION, GENERAL
A. General: Demolish and remove existing construction only to extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations and as follows:
1. Proceed with selective demolition systematically, from higher to lower level. Complete selective demolition operations above each floor or tier before disturbing supporting members on the next lower level.
2. Neatly cut openings and holes plumb, square, and true to dimensions required. Use cutting methods least likely to damage construction to remain or adjoining construction.
Use hand tools or small power tools designed for sawing or grinding, not hammering and chopping. Temporarily cover openings to remain.
3. Cut or drill from the exposed or finished side into concealed surfaces to avoid marring existing finished surfaces.
4. Do not use cutting torches until work area is cleared of flammable materials. At concealed spaces, such as duct and pipe interiors, verify condition and contents of hidden space before starting flame-cutting operations. Maintain portable fire-suppression devices during flame-cutting operations.
5. Maintain adequate ventilation when using cutting torches.
6. Remove decayed, vermin -infested, or otherwise dangerous or unsuitable materials and promptly dispose of off-site.
7. Remove structural framing members and lower to ground by method suitable to avoid free fall and to prevent ground impact or dust generation.
8. Locate selective demolition equipment and remove debris and materials so as not to impose excessive loads on supporting walls, floors, or framing.
B. Site Access and Temporary Controls: Conduct selective demolition and debris -removal operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.
1. Do not close or obstruct streets, walks, walkways, or other adjacent occupied or used facilities without permission from Owner and authorities having jurisdiction. Provide alternate routes around closed or obstructed trafficways if required by authorities having jurisdiction.
2. Use water mist and other suitable methods to limit spread of dust and dirt. Comply with governing environmental-protection regulations. Do not use water when it may damage adjacent construction or create hazardous or objectionable conditions, such as ice, flooding, and pollution.
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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SELECTIVE DEMOLITION 024119 - 6
3.5 SELECTIVE DEMOLITION PROCEDURES FOR SPECIFIC MATERIALS A. Roofing – Limited Scope: Remove no more existing roofing than what can be covered in one day by new roofing and so that building interior remains watertight and weathertight. See Section 075416 "Ketone Ethylene Ester" for new roofing requirements.
1. Remove specific areas of the (E) KEE roofing system as indicated on the Drawings and as required to accommodate the Scope of Work of this project.
3.6 DISPOSAL OF DEMOLISHED MATERIALS
A. Remove demolition waste materials from Project site and dispose of them in an EPA -approved construction and demolition waste landfill acceptable to authorities having jurisdiction.
1. Do not allow demolished materials to accumulate on-site.
2. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.
3. Remove debris from elevated portions of building by chute, hoist, or other device that will convey debris to grade level in a controlled descent.
B. Burning: Do not burn demolished materials.
3.7 CLEANING
A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.
END OF SECTION 024119
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 1
SECTION 075416 - KETONE ETHYLENE ESTER (KEE) ROOFING
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Alteration of the existing Garland Company Ketone Ethylene Ester (KEE) roofing membrane and accessories as required to accommodate the scope of this project.
B. Related Requirements:
1. Section 076200 "Sheet Metal Flashing and Trim" for metal roof flashings, counterflashings, and sheet metal scuppers.
1.2 DEFINITIONS
A. Roofing Terminology: Definitions in ASTM D1079 and glossary in NRCA's "The NRCA Roofing Manual: Membrane Roof Systems" apply to work of this Section.
1.3 PREINSTALLATION MEETINGS
A. Preliminary Roofing Conference: Before starting patching work, meet with Owner, Architect, Roofing Manufacturer, and Roofing Installer.
1. Review methods and procedures related to patching existing roofing, including manufacturer's written instructions and maintaining existing roofing warranty.
2. Review construction schedule, availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays.
3. Review flashing tie -ins, special roofing details, roof drainage, roof penetrations, equipment curbs, and condition of other construction that affects patching work.
4. Review temporary protection requirements for roofing system during and after installation.
5. Review roof observation and repair procedures after patching is complete.
1.4 ACTION SUBMITTALS
A. Product Data:
1. Ketone ethylene ester (KEE) roofing membrane and flashing materials.
2. Accessory roofing materials.
B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other work, including the following:
1. Base flashings and membrane terminations.
2. Flashing details at penetrations.
3. Tapered insulation sump at drains, including slopes.
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KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 2
4. Tie-in with sheet metal.
1.5 INFORMATIONAL SUBMITTALS
A. Qualification Data: For Installer and manufacturer.
B. Manufacturer Certificates:
1. Performance Requirement Certificate: Signed by roof membrane manufacturer, certifying that roofing system complies with requirements specified in "Performance Requirements" Article.
a. Submit evidence of compliance with performance requirements.
C. Special Warranty Certificate: Signed by roof membrane manufacturer, confirming that patching materials and installation methods are acceptable for integration with the existing roofing system warranty, and that coverage of the existing warranty will remain in effect.
D. Sample Warranties: For manufacturer's special warranties, showing acceptance of patching work as part of the existing roofing system warranty.
1.6 CLOSEOUT SUBMITTALS
A. Maintenance Data: For roofing system to include in maintenance manuals.
B. Certified statement from existing roof membrane manufacturer stating that the existing roof warranty has not been affected by Work performed under this Section.
1.7 QUALITY ASSURANCE
A. Installer Q ualifications: A qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty.
1.8 DELIVERY, STORAGE, AND HANDLING
A. Deliver roofing materials to Project site in original containers with seals unbroken and labeled with manufacturer's name, product brand name and type, date of manufacture, approval or listing agency markings, and directions for storing and mixing with other components.
B. Store liquid materials in their original undamaged containers in a clean, dry, protected location and within the temperature range required by roofing system manufacturer. Protect stored liquid material from direct sunlight.
1. Discard and legally dispose of liquid material that cannot be applied within its stated shelf life.
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KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 3
C. Protect roof insulation materials from physical damage and from deterioration by sunlight, moisture, soiling, and other sources. Store in a dry location. Comply with insulation manufacturer's written instructions for handling, storing, and protecting during installation.
D. Handle and store roofing materials, and place equipment in a manner to avoid permanent deflection of deck.
1.9 FIELD CONDITIONS
A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit roofing system to be installed in accordance with manufacturer's written instructions and warranty requirements.
1.10 WARRANTY
A. Warranty Compliance: All patching and repair work shall be performed in full compliance with the requirements of the existing Garland roofing system warranty.
1. Materials and methods used for patching shall be those approved by Garland and consistent with maintaining the validity of the existing warranty.
2. Obtain written authorization from Garland prior to performing any work that could affect the existing roofing system warranty.
3. Provide documentation from Garland confirming that the completed patching work has been accepted and that the existing warranty remains in effect.
B. Installer’s Warranty : Roofing Installer shall provide a written warranty, signed by Installer, confirming that patching and repair work performed under this Section complies with Garland’s requirements and does not impair the validity of the existing Garland warranty.
1. Warranty Period: Two years from Date of Substantial Completion.
PART 2 - PRODUCTS
2.1 PERFORMANCE REQUIREMENTS
A. General Performance: Installed roofing and base flashings to withstand specified uplift pressures, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects in construction. Roof system and base flashings to remain watertight.
1. Accelerated Weathering: Roof membrane to withstand 2000 hours of exposure when tested in accordance with ASTM G152, ASTM G154, or ASTM G155.
2. Impact Resistance: Roof membrane to resist impact damage when tested in accordance with ASTM D3746 or ASTM D4272/D4272M, or the "Resistance to Foot Traffic Test" in FM Approvals 4470.
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KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 4
B. Material Compatibility: Roofing materials to be compatible with one another and adjacent materials under conditions of service and application required, as demonstrated by roof membrane manufacturer based on testing and field experience.
C. Wind Uplift Resistance: Patch repairs shall be installed with materials and methods consistent with existing approved roof assembly to maintain continuity of wind uplift resistance.
D. Energy Performance: Patch repair membrane to have an initial solar reflectance of not less than
0.75-0.78 and an emissivity of not less than 0.75 when tested in accordance with ANSI/CRRC S100.
E. Exterior Fire-Test Exposure: ASTM E108 or UL 790, Maintain existing Class A rating.
2.2 KETONE ETHYLENE ESTER (KEE) ROOFING SYSTEM
A. Manufacturer: All products shall be manufactured by The Garland Company or as approved by The Garland Co . as required to match the existing roofing system. NO SUBSTITUTIONS ACCECPTED.
B. Base Ply: SBS-modified bituminous sheet, polyester reinforced, complying with ASTM D6162
1. Acceptable Manufacturer: The Garland Co.
2. Product: FlexBase 80
3. Thickness: 80 mils (2 mm), nominal.
C. KEE Sheet: ASTM D6754/D6754M, fabric reinforced and fabric backed.
1. Acceptable Manufacturer: The Garland Co.
2. Product: KEE-Stone FB 60
3. Ketone Ethylene Ester (KEE) Content: Not less than 50 percent by weight of the polymer content of the sheet when tested in accordance with ASTM D8154.
4. Thickness: 60 mils (1.5 mm), nominal.
5. Exposed Face Color: White.
D. Source Limitations: Obtain components for roofing system from manufacturer of roof membrane. Must comply with existing roofing warranty.
2.3 ACCESSORY ROOFING MATERIALS
A. General: Accessory materials recommended by roofing system manufacturer for intended use and compatible with other roofing components.
1. Adhesives and Sealants: Comply with VOC limits of authorities having jurisdiction.
B. Sheet Flashing: Manufacturer's standard sheet flashing of same material, type, reinforcement, thickness, and color as KEE sheet.
C. Base Sheet Bonding Adhesive: Cold-applied, solvent-free, low-VOC urethane adhesive.
1. Acceptable Manufacturer: The Garland Co.
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2. Product: Green-Lock Flashing Adhesive
D. KEE Sheet Bonding Adhesive:
1. Acceptable Manufacturer: The Garland Company
2. Product: KEE-Lock Foam
E. Asphalt Primer
1. Acceptable Manufacturer: The Garland Company
2. Product: Garla-Prime VOC
F. Membrane Protection Layer: Provide additional reinforced KEE membrane sacrificial layer at all upper-roof downspout discharge locations, fully heat-welded to primary membrane.
1. Minimum size: 36 by 36 inches (914 mm by 914 mm) unless otherwise approved by roofing manufacturer.
2. Use same membrane type and thickness as primary roof membrane.
2.4 TAPERED INSULATION SUMPS
A. Factory-tapered Polyisocyanurate Insulation Sumps: ASTM C1289, Type II, Class 1, Grade 2, felt or glass-fiber mat facer on both major surfaces.
1. Acceptable Manufacturer: John Mansville or approved equal.
2. Product: Energy 3 CGF
3. Compressive Strength: 25 psi (172 kPa).
4. Slope: See Architectural Drawings.
5. Thickness: See Architectural Drawings.
2.5 INSULATION ACCESSORIES AND COVER BOARD
A. General: Roof insulation accessories recommended by insulation manufacturer for intended use and compatibility with other roofing system components.
B. Insulation Adhesive: Insulation manufacturer's recommended adhesive formulated to attach roof insulation to substrate or to another insulation layer as follows:
1. Full-spread, spray-applied, low-rise, two-component urethane adhesive.
2. Acceptable Manufacturer: The Garland Co..
3. Product: Insul-Lock HR
C. Glass-Mat Gypsum Cover Board: ASTM C1177/C1177M, water-resistant gypsum board.
1. Acceptable Manufacturer: Georgia-Pacific or approved equal.
2. Product: DensDeck Prime
3. Thickness: 1/2 inch (13 mm) or to match existing coverboard.
4. Surface Finish: Factory primed.
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KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 6
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements and other conditions affecting performance of the Work.
1. Verify that wood blocking, curbs, and nailers are securely anchored to roof deck at penetrations and terminations and that nailers match thicknesses of insulation.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Clean substrate of dust, debris, moisture, and other substances detrimental to roofing system installation in accordance with roofing system manufacturer's written instructions. Remove sharp projections.
B. Prevent materials from entering and clogging roof drains and conductors and from spilling or migrating onto surfaces of other construction. Remove roof -drain plugs when no work is taking place or when rain is forecast.
3.3 PATCHING OF ROOFING SYSTEM, GENERAL
A. Patch existing roofing system in accordance with roofing system manufacturer's written instructions.
B. Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of roofing system at the end of workday or when rain is forecast.
Remove and discard temporary seals before beginning work on adjoining roofing.
C. Install roof membrane and auxiliary materials to tie into existing roofing to maintain weathertightness of transition and to not void warranty for existing roofing system.
3.4 INSTALLATION OF TAPERED INSULATION SUMPS
A. Coordinate installing roofing system components so insulation is not exposed to precipitation or left exposed at the end of the workday.
B. Comply with roofing system and insulation manufacturer's written instructions for installing roof insulation.
C. Install factory-tapered polyisocyanurate insulation sump panels at roof drains.
1. Sump panels shall comply with ASTM C1289, Type II, Class 1.
2. Size sump panels so each side equals the diameter of the drain bowl plus 24 inches (610 mm) minimum.
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3. Trim insulation neatly to fit around drains, penetrations, and projections, maintaining unrestricted water flow to drains.
4. Joints between sump boards shall be tight -fitting, with gaps not greater than 1/4 inch (6 mm). Fill gaps exceeding this dimension with insulation.
5. Install tapered sump boards in ribbons of bead-applied low-rise urethane adhesive.
6. Press sump boards firmly in place to achieve full contact and positive slope to the drain.
3.5 INSTALLATION OF COVER BOARDS
A. Install cover boards over insulation with long joints in continuous straight lines wit h end joints staggered between rows. Offset joints of insulation below a minimum of 6 inches (150 mm) in each direction.
1. Trim cover board neatly to fit around penetrations and projections, and to fit tight to intersecting sloping roof decks.
2. At internal roof drains, conform to slope of drain sump. a. Trim cover board so that water flow is unrestricted.
3. Cut and fit cover board tight to nailers, projections, and penetrations.
4. Adhere cover board to substrate using adhesive in accordance with FM Approvals' RoofNav listed roof assembly requirements for specified Windstorm Resistance Classification and FM Global Property Loss Prevention Data Sheet 1-29, as follows:
a. Set cover board in ribbons of bead-applied insulation adhesive, firmly pressing and maintaining insulation in place.
b. Set cover board in a uniform coverage of full -spread insulation adhesive, firmly pressing and maintaining insulation in place.
B. Install base ply over cover board and immediately beneath roof membrane. New bas e ply should extend a minimum of 6” onto existing base ply. Apply a 3 course at all patch terminations.
C. Place plates on insulation in required fastening patterns and secure in accordance with manufacturer’s instructions.
1. Install plates and fasteners tight and flat to substrate with no dimpling, and with fastener extending 1 inch (25 mm) minimum into roof deck; do not overdrive fasteners.
3.6 INSTALLATION OF ADHERED ROOF MEMBRANE
A. Adhere roof membrane over area to receive roofing in accordance with roofing system manufacturer's written instructions. Unroll roof membrane and allow to relax before installing.
B. Start installation of roofing in presence of roofing system manufacturer's technical personnel.
C. Accurately align roof membrane, and maintain uniform side and end laps of minimum dimensions required by manufacturer. Stagger end laps.
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KETONE ETHYLENE ESTER (KEE) ROOFING 075416 - 8
D. Bonding Adhesive: Apply to substrate and underside of roof membrane at rate required by manufacturer, and allow to partially dry before installing roof membrane. Do not apply to splice area of roof membrane.
E. Fabric-Backed Roof Membrane Adhesive: Apply to substrate at rate required by manufacturer, and install fabric-backed roof membrane.
F. In addition to adhering, mechanically fasten roof membrane securely at vertical terminations.
G. Apply roof membrane with side laps shingled with slope of roof deck where possible.
H. Seams: Clean seam areas, overlap roofing, and hot-air weld side and end laps of roof membrane and sheet flashings to ensure a watertight seam installation.
1. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut edges of roof membrane and sheet flashings.
2. Verify field strength of seams a minimum of twice daily, and repair seam sample areas.
3. Repair tears, voids, and lapped seams in roof membrane that do not comply with requirements.
I. Spread sealant bed over deck -drain flange at roof drains, and securely seal roof membrane in place with clamping ring.
J. Membrane Protection: Install reinforced KEE membrane protection layer at downspout discharge point. Adhere to roof membrane.
1. Coordinate with downspout layout and provide additional protection where concentrated flow occurs.
3.7 INSTALLATION OF BASE FLASHING
A. Install sheet flashings and preformed flashing accessories, and adhere to substrates in accordance with roofing system manufacturer's written instructions.
B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate, and allow to partially dry. Do not apply to seam area of flashing.
C. Flash penetrations and field -formed inside and outside corners with cured or uncured sheet flashing.
D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot -air weld side and end laps to ensure a watertight seam installation.
E. Terminate and seal top of sheet flashings and mechanically anchor to substrate through termination bars.
3.8 INSTALLATION OF ROOF DRAIN DETAIL
A. Plug drain to prevent debris from entering plumbing.
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B. Taper insulation as previously noted in specification.
C. Run roof system base plies over drain. Cut out plies inside drain bowl.
D. Set lead flashing in ¼” bed of mastic. Run lead into drain a minimum of 2 inches. Prime lead with Garla-Prime VOC.
E. Install stripping ply with Flexbase 80 (40 inch square minimum in Green -Lock Flashing adhesive.
F. Install thermoplastic cap ply (48 inch square minimum) in foam adhesive.
G. Install clamping ring and assure that all plies are under the clamping ring.
H. Remove drain plug and install strainer.
3.9 FIELD QUALITY CONTROL
A. Final Roof Inspection: Arrange for roofing system manufacturer's technical personnel to inspect roofing installation on completion, in presence of Architect, and to prepare inspection report.
B. Repair or remove and replace components of roofing system where inspections indicate that they do not comply with specified requirements.
C. Additional testing and inspecting, at Contractor's expense, will be performed to determine if replaced or additional work complies with specified requirements.
3.10 PROTECTING AND CLEANING
A. Protect roofing system from damage and wear during remainder of construction period. When remaining construction does not affect or endanger roofing, inspect roofing system for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner.
B. Correct deficiencies in or remove roofing system that does not comply with requirements, repair substrates, and repair or reinstall roofing system to a condition free of damage and deterioration at time of Substantial Completion and in accordance with warranty requirements.
END OF SECTION 075416
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
SHEET METAL FLASHING AND TRIM 076200 - 1
SECTION 076200 - SHEET METAL FLASHING AND TRIM
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes: Custom flashing and trim fabrications, made from the following:
1. Sheet metal scuppers.
2. Through-Wall scuppers.
3. Conductor heads.
4. Gutters and downspouts.
B. Related Requirements:
1. Section 075416 – "Ketone Ethylene Ester (KEE) Roofing" for materials and installation of roofing system integral with flashing.
1.2 ACTION SUBMITTALS
A. Product Data: For each type of product.
B. Shop Drawings: For sheet metal flashing and trim.
1. Plans, elevations, sections, and attachment details.
2. Fabrication and installation layouts, with locations keyed to roof plan.
3. Identification of material, thickness, weight, and finish for each item and location in Project.
4. Identification of material, thickness, weight, and finish. Details of termination points and assemblies.
5. Details of joints, connections, and supports.
6. Details of termination points, transitions to adjacent assemblies, and waterproofing integration.
C. Samples: For each exposed product and for each color and texture specified, 12 inches (300 mm) long by actual width.
D. Samples for Initial Selection: Manufacturer's standard color sheets, showing full range of available colors for each type of exposed finish.
E. Samples for Verification: Actual sample of finished products for each type of exposed finish for sheet metal and other metal accessories.
1.3 INFORMATIONAL SUBMITTALS
A. Product Test Reports: For each product, for tests performed by a qualified testing agency.
B. Qualification Statements: For fabricator.
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C. Sample warranties.
1.4 CLOSEOUT SUBMITTALS
A. Maintenance Data: For scuppers and conductor heads, including recommended cleaning and inspection procedures.
1.5 QUALITY ASSURANCE
A. Fabricator Qualifications: Entity that employs skilled workers who custom fabricate sheet metal flashing and trim similar to that required for this Project and whose products have a record of successful in-service performance.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Store scuppers and conductor heads to prevent damage, deformation, or contamination.
B. Protect finishes from exposure to moisture, sunlight, and impact damage.
C. Protect strippable protective covering on sheet metal scuppers and conductor heads from exposure to sunlight and high humidity, except to extent necessary for installation.
1.7 WARRANTY
A. Special Warranty on Finishes: Manufacturer agrees to repair finish or replace sheet metal flashing and trim that shows evidence of deterioration of factory -applied finishes within specified warranty period.
1. Exposed Panel Finish: Deterioration includes, but is not limited to, the following:
a. Color fading more than 5 Delta E units when tested in accordance with ASTM D2244.
b. Chalking in excess of a No. 8 rating when tested in accordance with ASTM D4214.
c. Cracking, checking, peeling, or failure of paint to adhere to bare metal.
2. Finish Warranty Period: 20 years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 PERFORMANCE REQUIREMENTS
A. Sheet metal flashing and trim assemblies, including cleats, anchors, and fasteners, are to withstand wind loads, structural movement, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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in construction. Completed sheet metal flashing and trim are not to rattle, leak, or loosen, and are to remain watertight.
B. Sheet Metal Standard for Flashing and Trim: Comply with NRCA's "The NRCA Roofing Manual: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing" and SMACNA's "Architectural Sheet Metal Manual" requirements for dimensions and profiles shown unless more stringent requirements are indicated.
C. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes.
1. Temperature Change: 120 deg F (67 deg C), ambient; 180 deg F (100 deg C), material surfaces.
2.2 SHEET METAL MATERIALS
A. Protect mechanical and other finishes on exposed surfaces from damage by applying strippable, temporary protective film before shipping.
B. Aluminum Sheet: Coil-coated sheet, ASTM B209/B209M, alloy as standard with manufacturer, with temper as required to suit forming operations and structural performance required.
1. Thickness: 0.040 inch (1.02 mm).
2. Surface: Smooth, flat.
3. Exposed Coil-Coated Finish:
a. Three-Coat Fluoropolymer: AAMA 2605. Fluoropolymer finish conta ining not less than 70 percent PVDF resin by weight in both color coat and clear topcoat.
Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.
4. Color: Match existing finish.
5. Concealed Finish: Pretreat with manufacturer's standard white or light -colored acrylic or polyester backer finish, consisting of prime coat and wash coat with minimum total dry film thickness of 0.5 mil (0.013 mm).
2.3 MISCELLANEOUS MATERIALS
A. Provide materials and types of fasteners , protective coatings, sealants, and other miscellaneous items as required for complete sheet metal flashing and trim installation and as recommended by manufacturer of primary sheet metal or manufactured item unless otherwise indicated.
B. Fasteners: Wood screws, annular threaded nails, self -tapping screws, self -locking rivets and bolts, and other suitable fasteners designed to withstand design loads and recommended by manufacturer of primary sheet metal or manufactured item.
1. General: Blind fasteners or self-drilling screws, gasketed, with hex-washer head.
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a. Exposed Fasteners: Heads matching color of sheet metal using plastic caps or factory-applied coating. Provide metal -backed EPDM or PVC sealing washers under heads of exposed fasteners bearing on weather side of metal. b. Blind Fasteners: High-strength aluminum or stainless steel rivets suitable for metal being fastened.
2. Fasteners for Aluminum Sheet: Aluminum or Series 300 stainless steel.
C. Sealant Tape: Pressure -sensitive, 100 percent solids, polyisobutylene compound sealant tape with release -paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape 1/2 inch (13 mm) wide and 1/8 inch (3 mm) thick.
D. Elastomeric Sealant: ASTM C920, elastomeric silicone polymer sealant; of type, grade, class, and use classifications required to seal joints in sheet metal flashing and trim and remain watertight.
E. Butyl Sealant: ASTM C1311, single -component, solvent -release butyl rubber sealant; polyisobutylene plasticized; heavy bodied for hooked -type expansion joints with limited movement.
2.4 FABRICATION, GENERAL
A. Custom fabricate sheet metal flashing and trim to comply with details indicated and recommendations in cited sheet metal standard that apply to design, dimensions, geometry, metal thickness, and other characteristics of item required.
1. Fabricate sheet metal flashing and trim in shop to greatest extent possible.
2. Fabricate sheet metal flashing and trim in thickness or weight needed to comply with performance requirements, but not less than that specified for each application and metal.
3. Verify shapes and dimensions of surfaces to be covered and obtain field measurements for accurate fit before shop fabrication.
4. Form sheet metal flashing and trim to fit substrates without excessive oil -canning, buckling, and tool marks; true to line, levels, and slopes; and with exposed edges folded back to form hems.
5. Conceal fasteners and expansion provisions where possible. Do not use exposed fasteners on faces exposed to view.
B. Fabrication Tolerances:
1. Fabricate sheet metal flashing and trim that is capable of installation to a tolerance of 1/4 inch (6 mm) on slope and location lines indicated on Drawings and within 1/8-inch (3-mm) offset of adjoining faces and of alignment of matching profiles.
2. Fabricate sheet metal flashing and trim that is capable of installation to tolerances specified.
C. Expansion Provisions: Form metal for thermal expansion of exposed flashing and trim.
1. Form expansion joints of intermeshing hooked flanges, not less than 1 inch (25 mm) deep, filled with butyl sealant concealed within joints.
2. Use lapped expansion joints only where indicated on Drawings.
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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D. Sealant Joints: Where movable, nonexpansion -type joints are required, form metal in accordance with cited sheet metal standard to provide for proper installation of elastomeric sealant.
E. Seams:
1. Fabricate nonmoving seams with flat -lock seams. Form seams and seal with elast omeric sealant unless otherwise recommended by sealant manufacturer for intended use. Rivet joints where necessary for strength.
F. Do not use graphite pencils to mark metal surfaces.
2.5 ROOF-DRAINAGE SHEET METAL FABRICATIONS
A. Hanging Gutters:
1. Fabricate to cross section required, complete with end pieces, outlet tubes, and other accessories as required.
2. Fabricate in minimum 96-inch- (2400-mm-) long sections.
3. Furnish flat-stock gutter brackets and flat-stock gutter spacers and straps fabricated from same metal as gutters, of size recommended by cited sheet metal standard, but with thickness not less than twice the gutter thickness
4. Fabricate expansion joints, expansion -joint covers, and gutter accessories from same metal as gutters. Shop fabricate interior and exterior corners.
5. Gutters with Girth up to 15 Inches (380 mm): Fabricate from the following materials:
a. Aluminum: 0.032 inch (0.81 mm) thick.
B. Downspouts: Fabricate rectangular or open-face downspouts to dimensions indicated on Drawings, complete with mitered elbows. Furnish with metal hangers from same material as downspouts and anchors.
1. Fabricated Hanger Style: Match existing profile.
2. Fabricate from the following materials:
C. Parapet Sc uppers: Fabricate scuppers to dimensions required, with closure flange trim to exterior, 4-inch- (100-mm-) wide wall flanges to interior, and base extending 4 inches (100 mm) beyond cant or tapered strip into field of roof. Fabricate from the following materials:
D. Aluminum Sheet: ASTM B209, minimum 0.040 inch (1.02 mm) thick, smooth, flat.Conductor Heads: Fabricate conductor heads with flanged back and stiffened top edge and of dimensions and shape required, complete with outlet tubes, exterior flange trim..
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
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PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates, areas, and conditions with Installer present, for compliance with requirements for installation tolerances, substrates, and other conditions affecting performance of the Work.
1. Verify compliance with requirements for installation tolerances of substrates.
2. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely anchored.
3. Verify that air- or water-resistant barriers have been installed over substrate to prevent air infiltration or water penetration.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION OF SHEET METAL FLASHING AND TRIM, GENERAL A. Install sheet metal flashing and trim to comply with details indicated and recommendations of cited sheet metal standard that apply to installation characteristics required unless otherwise indicated on Drawings.
1. Install fasteners, protective coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal flashing and trim system.
2. Install sheet metal flashing and trim true to line, levels, and slopes. Provide uniform, neat seams with minimum exposure of welds and sealant.
3. Anchor sheet metal flashing and trim and other components of the Work securely in place, with provisions for thermal and structural movement.
4. Install sheet metal flashing and trim to fit substrates and to result in watertight performance.
5. Install exposed sheet metal flashing and trim with limited oil -canning, and free of buckling and tool marks.
6. Do not field cut sheet metal flashing and trim by torch.
7. Do not use graphite pencils to mark metal surfaces.
B. Metal protection: Provide permanent separation between sheet metal and dissimilar metals, cementitious construction, or pressure-treated wood, using membrane underlayment, slip sheet, or bituminous coating, as recommended by manufacturer.
C. Fasteners: Use fastener sizes that penetrate wood blocking or sheathing not less than 1- 1/4 inches (32 mm) for nails and not less than 3/4 inch (19 mm) for wood screws.
D. Conceal fasteners and expansion provisions where possible in exposed work and locate to minimize possibility of leakage. Cover and seal fasteners and anchors as required for a tight installation.
E. Seal joints as required for watertight construction.
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1. Use sealant-filled joints unless otherwise indicated. a. Embed hooked flanges of joint members not less than 1 inch (25 mm) into sealant. b. Form joints to completely conceal sealant.
c. When ambient temperature at time of installation is between 40 and 70 deg F (4 and 21 deg C), set joint members for 50 percent movement each way. d. Adjust setting proportionately for installation at higher ambient temperatures. 1) Do not install sealant-type joints at temperatures below 40 deg F (4 deg C).
3.3 INSTALLATION OF ROOF-DRAINAGE SHEET METAL FABRICATIONS A. Install sheet metal roof-drainage items to produce complete roof-drainage system in accordance with cited sheet metal standard unless otherwise indicated. Coordinate installation of roof perimeter flashing with installation of roof-drainage system.
B. Hanging Gutters:
1. Join sections with riveted and soldered joints or joints sealed with sealant.
2. Provide for thermal expansion.
3. Attach gutters at eave or fascia to firmly anchor them in position.
4. Provide end closures and seal watertight with sealant.
5. Slope to downspouts.
6. Fasten gutter spacers to front and back of gutter.
7. Anchor and loosely lock back edge of gutter to continuous cleat.
C. Downspouts:
1. Join sections with 1-1/2-inch (38-mm) telescoping joints.
2. Provide hangers with fasteners designed to hold downspouts securely to walls.
3. Locate hangers at top and bottom and at approximately 60 inches (1500 mm) o.c.
4. Provide elbows at base of downspout to direct water away from building.
5. Connect downspouts to underground drainage system.
D. Parapet Scuppers:
1. Continuously support scupper, set to correct elevation, and seal flanges to interior wall face, over cants or tapered edge strips, and under roofing membrane.
2. Anchor scupper closure trim flange to exterior wall and seal with elastomeric sealant ] to scupper.
3. Loosely lock front edge of scupper with conductor head.
4. Seal with elastomeric sealant exterior wall scupper flanges into back of conductor head.
E. Conductor Heads: Anchor securely to wall, with elevation of conductor head rim at minimum of 1 inch (25 mm) below scupper discharge.
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3.4 INSTALLATION TOLERANCES
A. Shim and align sheet metal flashing and trim within installed tolerance of 1/4 inch in 20 ft. (6 mm in 6 m) on slope and location lines indicated on Drawings and within 1/8-inch (3-mm) offset of adjoining faces and of alignment of matching profiles.
3.5 CLEANING
A. Clean off excess sealants.
3.6 PROTECTION
A. Remove temporary protective coverings and strippable films as sheet metal flashing and trim are installed unless otherwise indicated in manufacturer's written installation instructions.
B. On completion of sheet metal flashing and trim installation, remove unused materials and clean finished surfaces as recommended in writing by sheet metal flashing and trim manufacturer.
C. Maintain sheet metal flashing and trim in clean condition during construction.
D. Replace sheet metal flashing and trim that have been damaged or that have deteriorated beyond successful repair by finish touchup or similar minor repair procedures, as determined by Architect.
END OF SECTION 076200
City of Alameda – Mastick Senior Center December 5, 2025 Roof Drains
1155 Santa Clara Ave
Alameda, CA 94501
GYPSUM PLASTERING 092300 - 1
SECTION 092300 - GYPSUM PLASTERING REPAIR
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Scope of work: Repair of existing ceiling system and including- but is not limited to – gypsum plaster and acoustical tile ceilings.
2. Materials for patching and repairing water-damaged gypsum plaster at walls and ceilings.
3. Adhesive-applied 12 inch by 12 inch (300 mm by 300 mm) acoustic ceiling tiles over patched cement plaster ceilings.
1.2 ACTION SUBMITTALS
A. Product Data:
1. Manufacturer’s data for plaster materials and accessories proposed for use in patching.
2. Manufacturer’s data for acoustic ceiling tiles and adhesive.
1.3 DELIVERY, STORAGE, AND HANDLING
A. Store materials inside under cover, and keep them dry and protected against damage from weather, moisture, direct sunlight, contamination, corrosion, construction traffic, and other causes.
1.4 FIELD CONDITIONS
A. Comply with ASTM C842 requirements or gypsum plaster manufacturer's written instructions, whichever are more stringent.
B. Room Temperatures: Maintain temperatures at not less than 55 deg F (13 deg C) or greater than 80 deg F (27 deg C) for at least seven days before application of gypsum plaster, continuously during application, and for seven days after plaster has set or until plaster has dried.
C. Avoid conditions that result in gypsum plaster drying out too quickly.
1. Distribute heat evenly; prevent concentrated or uneven heat on plaster , especially at ceilings.
2. Maintain relative humidity levels for prevailing ambient temperature that produce normal drying conditions.
3. Ventilate building spaces in a manner that prevents drafts of air from contacting surfaces during plaster application and until plaster is dry.
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GYPSUM PLASTERING 092300 - 2
D. Do not install acoustic ceiling tiles until plaster substrate is fully cured, dry, and free of efflorescence or surface moisture.
PART 2 - PRODUCTS
2.1 SOURCE LIMITATIONS
A. Obtain base- and finish-coat plasters from single source from single manufacturer.
2.2 EXPANDED METAL LATH
A. Expanded Metal Lath: ASTM C847; cold -rolled carbon -steel sheet, hot -dip galvanized with ASTM A653/A653M G60 (Z180) zinc coating.
1. Cemco or approved equal.
a. Provide self-furring type lath where plaster is applied to ceilings, unless otherwise indicated.
2.3 ACCESSORIES
A. General: Comply with requirements in ASTM C841, and coordinate depth of trim and accessories with thicknesses and number of plaster coats required.
B. Metal Accessories:
1. Cornerbeads: Fabricated from zinc -coated (galvanized) steel; square -edged style; with expanded flanges.
2. Casing Beads: Fabricated from zinc -coated (galvanized) steel; square -edged style; with expanded flanges.
3. Control Joints: Fabricated from zinc-coated (galvanized) steel; one-piece type, M-shaped configuration; with perforated flanges.
2.4 BASE-COAT GYPSUM PLASTER MATERIALS
A. Lightweight-Gypsum Ready -Mixed Plaster: ASTM C28/C28M, with factory -mixed perlite aggregate.
1. USG or approved equal.
2. Product: Structo-Lite Basecoat Plaster.
B. Aggregates for Base-Coat Plasters: ASTM C35, sand or perlite.
2.5 FINISH-COAT GYPSUM PLASTER MATERIALS
A. Gypsum Gauging Plaster: ASTM C28/C28M.
1. USG or approved equal.
2. Product: Diamond Gauging Finish.
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B. Gypsum Ready-Mixed Finish Plaster: Manufacturer's standard, factory -mixed, gaged, interior finish.
1. USG or approved equal.
2. Product: Imperial Finish.
2.6 MISCELLANEOUS MATERIALS
A. Water for Mixing and Finishing Plaster: Potable and free of substances capable of affecting plaster set or of damaging plaster, lath, or accessories.
B. Bonding Compound: ASTM C631; recommended by plaster manufacturer for application indicated.
C. Fasteners for Attaching Metal Lath to Substrates: ASTM C841.
1. Provide fasteners suitable for overhead (ceiling) installation.
D. Wire: ASTM A641/A641M, Class 1 zinc coating, soft temper, not less than 0.0475-inch (1.21- mm) diameter unless otherwise indicated.
E. Mix Additives: Manufacturer’s recommended gypsum plaster accelerator or retarder, only as required by Project conditions
2.7 PLASTER MIXES
A. Mixing: Comply with ASTM C842 and manufacturer's written instructions for applications indicated.
B. Mix Additives: Use accelerators and retarders, if required by Project conditions, in accordance with manufacturer's written instructions.
2.8 ACOUSTIC CEILING TILES
A. Ceiling Tile Units: Mineral fiber or glass fiber acoustical ceiling units, adhesive-applied, size 12 inches by 12 inch by 12 inch (300 mm by 300 mm) square edge. Match existing thickness of ceiling tile in field.
1. Armstrong, or approved equal.
2. Product: Impression.
3. Performance requirements:
a. NRC: Minimum 0.50.
b. Surface burning: ASTM E84, Class A.
B. Adhesive: Adhesive shall be a manufacturer -recommended acoustical ceiling tile adhesive, suitable for direct application of 12 inch by 12 inch (300 mm by 300 mm) ceiling tiles to plaster or gypsum board substrates.
1. Henry, or approved equal.
2. Product: 237 Acoustigum.
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PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.
B. Reject plaster materials that are wet or moisture damaged.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Protect adjacent work from soiling, spattering, moisture deterioration, and other harmful effects caused by plastering.
B. Protect floors and provide overhead protection for adjacent areas when working on ceilings.
3.3 INSTALLATION OF EXPANDED METAL LATH
A. Expanded Metal Lath: Install in accordance with ASTM C841.
B. Use flat diamond-mesh lath for repairs at walls and ceilings.
C. Where plaster is applied directly to solid substrates (masonry, concrete, or old plaster), use self - furring diamond-mesh lath as required to provide mechanical key.
D. Install lath at ceilings with adequate support and fastening to prevent sag or detachment under weight of plaster.
3.4 INSTALLATION OF ACCESSORIES
A. General: Install in accordance with ASTM C841.
B. Cornerbeads: Install at external corners.
C. Casing Beads: Install at terminations of plasterwork, except where plaster passes behind and is concealed by other work and where metal screeds, bases, or frames act as casing beads.
D. Install ceiling trim, control joints, or molding where patching plaster abuts dissimilar ceiling finishes or at perimeter conditions as required.
3.5 APPLICATION OF PATCHING PLASTER
A. General: Comply with ASTM C842.
1. Remove loose or damaged plaster and clean substrate.
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2. Apply bonding agent wh ere required for adhesion to existing plaster, masonry, or concrete.
3. Apply patching plaster in layers to match surrounding thickness and profile. D. Feather edges smoothly into adjacent sound plaster.
4. At ceilings, apply plaster in multiple thin layers to control sag and shrinkage, ensuring mechanical bond to lath or substrate.
3.6 FINISHING
A. Match color, texture, and appearance of surrounding surfaces.
B. Provide repair surfaces that are flush, durable, and ready for painting or finishing.
C. At ceilings, ensure finish coat blends uniformly with surrounding plane and existing texture, with no visible ridges, sags, or irregularities when viewed under normal lighting.
3.7 INSTALLATION OF ACOUSTIC CEILING TILES
A. Install ceiling tiles only after patched plaster substrate is fully cured, dry, and free of surface contaminants.
B. Apply acoustical ceiling tile adhesive in accordance with adhesive manufacturer’s written instructions.
1. Apply adhesive directly to back of tile in spots or beads as recommended.
2. Press tile firmly to substrate, beginning at tile center and working outward to edges to achieve full contact and avoid voids.
3. Maintain alignment, joints, and level plane across ceiling surface.
C. Cut and fit edge tiles neatly at perimeters and around penetrations.
D. Do not install tiles in areas subject to excessive moisture or temperature variations outside manufacturer’s limits.
3.8 REPAIR
A. Repair or replace work to eliminate cracks, dents, blisters, buckles, crazing and check cracking, dry outs, efflorescence, sweat outs, and similar defects and where bond to substrate has failed.
B. At ceilings, remove and replace plaster that shows sagging or detachment from lath or substrate.
3.9 CLEANING
A. Remove temporary protection and enclosure of other work after plastering is complete.
B. Promptly remove plaster from door frames, windows, and other surfaces not indicated to be plastered.
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C. Repair floors, walls, and other surfaces stained, marred, or otherwise damaged during plastering.
D. Clean overhead work areas of plaster droppings and debris to maintain safe working conditions.
END OF SECTION 092300
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PAINTING 099000 - 1
SECTION 099100 - PAINTING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section includes surface preparation and the application of paint systems on interior and exterior substrates.
B. Scope of work:
1. Interior: Repair of water stained walls to match existing.
2. Exterior: New sheet metal fabrications, and exposed rain water leaders.
1.3 DEFINITIONS
A. MPI Gloss Level 1: Not more than five units at 60 degrees and 10 units at 85 degrees, according to ASTM D523.
B. MPI Gloss Level 2: Not more than 10 units at 60 degrees and 10 to 35 units at 85 degrees, according to ASTM D523.
C. MPI Gloss Level 3: 10 to 25 units at 60 degrees and 10 to 35 units at 85 degrees, according to ASTM D523.
D. MPI Gloss Level 4: 20 to 35 units at 60 degrees and not less than 35 units at 85 degrees, according to ASTM D523.
E. MPI Gloss Level 5: 35 to 70 units at 60 degrees, according to ASTM D523.
F. MPI Gloss Level 6: 70 to 85 units at 60 degrees, according to ASTM D523.
G. MPI Gloss Level 7: More than 85 units at 60 degrees, according to ASTM D523.
1.4 ACTION SUBMITTALS
A. Product Data: For each type of product. Include preparation requirements and application instructions.
1. Include printout of current "MPI Approved Products List" for each product category specified, with the proposed product highlighted.
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2. Indicate VOC content.
B. Samples for Initial Selection: For each type of topcoat product.
C. Samples for Verification: For each type of paint system and in each color and gloss of topcoat.
1.5 MAINTENANCE MATERIAL SUBMITTALS
A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
1. Paint: 5 percent, but not less than 1 gal. (3.8 L) of each material and color applied.
1.6 QUALITY ASSURANCE
A. Mockups: Apply mockups of each paint system indicated and each color and finish selected to verify preliminary selections made under Sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution.
1. Architect will select one surface to represent surfaces and conditions for application of each paint system.
a. Vertical and Horizontal Surfaces: Provide samples of at least 100 sq. ft. (9 sq. m). b. Other Items: Architect will designate items or areas required.
2. Final approval of color selections will be based on mockups. a. If preliminary color selections are not approved, apply additional mockups of additional colors selected by Architect at no added cost to Owner.
3. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect specifically approves such deviations in writing.
4. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Store materials not in use in tightly covered containers in well -ventilated areas with ambient temperatures continuously maintained at not less than 45 deg F (7 deg C).
1. Maintain containers in clean condition, free of foreign materials and residue.
2. Remove rags and waste from storage areas daily.
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1.8 FIELD CONDITIONS
A. Apply paints only when temperature of surfaces to be painted and ambient air temperatures are between 50 and 95 deg F (10 and 35 deg C).
B. Do not apply paints when relative humidity exceeds 85 percent; at temperatures of less than 5 deg F (3 deg C) above the dew point; or to damp or wet surfaces.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Acceptable Manufacturers: or approved equal.
1. Sherwin-Williams.
2. Benjamin Moore Paints.
B. Products: Subject to compliance with requirements, provide coating systems that comply with MPI Architectural Painting Specification Manual for each paint category and substrate indicated in the Painting Schedule.
2.2 PAINT, GENERAL
A. MPI Standards: Products shall comply with MPI standards indicated and shall be listed in its "MPI Approved Products List."
B. Material Compatibility:
1. Materials for use within each paint system shall be compatible with one another and substrates indicated, under conditions of service and application as demonstrated by manufacturer, based on testing and field experience.
2. For each coat in a paint system, products shall be recommended in writing by topcoat manufacturers for use in paint system and on substrate indicated.
C. Colors: As selected by Architect from manufacturer's full range As indicated in a color schedule.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine substrates and conditions, with Applicator present, for compliance with requirements for maximum moisture content and other conditions affecting performance of the Work.
B. Maximum Moisture Content of Substrates: When measured with an electronic moisture meter as follows:
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1. Concrete: 12 percent.
2. Fiber-Cement Board: 12 percent.
3. Masonry (Clay and CMUs): 12 percent.
4. Wood: 15 percent.
5. Gypsum Board: 12 percent.
6. Plaster: 12 percent.
C. Gypsum Board Substrates: Verify that finishing compound is sanded smooth.
D. Plaster Substrates: Verify that plaster is fully cured.
E. Spray-Textured Ceiling Substrates: Verify that surfaces are dry.
F. Verify suitability of substrates, including surface conditions and compatibility, with existing finishes and primers.
G. Proceed with coating application only after unsatisfactory conditions have been corrected.
1. Application of coating indicates acceptance of surfaces and conditions.
3.2 PREPARATION
A. Comply with manufacturer's written instructions and recommendations in "MPI Architectural Painting Specification Manual" applicable to substrates and paint systems indicated.
B. Protect adjacent surfaces not scheduled for painting.
C. Exterior Sheet Metal (Downspouts, Scuppers, Rainwater leaders and Conductor Heads).
1. Clean galvanized surfaces of oil, grease, dirt, and oxidation.
2. Prepare surfaces to ensure adhesion of primer and finish coats.
D. Interior Gypsum Board or Plaster (Ceilings and Walls – Touch-up Areas)
1. Clean substrates of dust, dirt, oil, and incompatible coatings.
2. Feather edges of existing sound paint adjacent to touch-up areas.
3. Spot-prime bare or repaired surfaces before applying topcoat.
E. Coordination: Verify compatibility of existing coatings with new paint systems. Apply tie coat where required to ensure adhesion.
3.3 INSTALLATION
A. Apply paints according to manufacturer's written instructions and to recommendations in "MPI Manual."
1. Use applicators and techniques suited for paint and substrate indicated.
2. Paint surfaces behind movable equipment and furniture same as similar exposed surfaces.
Before final installation, paint surfaces behind permanently fixed equipment or furniture with prime coat only.
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3. Paint front and backsides of access panels, removable or hinged covers, and similar hinged items to match exposed surfaces.
4. Do not paint over labels of independent testing agencies or equipment name, identification, performance rating, or nomenclature plates.
5. Primers specified in painting schedules may be omitted on items that are factory primed or factory finished if acceptable to topcoat manufacturers.
B. Apply additional coats as required for uniform color, coverage, and film build.
C. Provide neat, workmanlike finishes free of runs, sags, lap marks, or visible brush/roller tracking.
Cut in at edges cleanly.
3.4 FIELD QUALITY CONTROL
A. Dry-Film Thickness Testing: Owner may engage the services of a qualified testing and inspecting agency to inspect and test paint for dry-film thickness.
1. Contractor shall touch up and restore painted surfaces damaged by testing.
2. If test results show that dry -film thickness of applied paint does not comply with paint manufacturer's written recommendations, Contractor shall pay for testing and apply additional coats as needed to provide dry -film thickness that complies with paint manufacturer's written recommendations.
3.5 CLEANING AND PROTECTION
A. At end of each workday, remove rubbish, empty cans, rags, and other discarded materials from Project site.
B. After completing paint application, clean spattered surfaces. Remove spattered paints by washing, scraping, or other methods. Do not scratch or damage adjacent finished surfaces.
C. Protect work of other trades against damage from paint application. Correct damage to work of other trades by cleaning, repairing, replacing, and refinishing, as approved by Architect, and leave in an undamaged condition.
D. At completion of construction activities of other trades, touch up and restore damaged or defaced painted surfaces.
3.6 PAINTING SCHEDULE
A. Exterior Galvanized Sheet Metal (Downspouts, Conductor Heads)
1. System: MPI EXT 6.3A – Exterior, Galvanized Metal, Latex.
2. Primer: MPI #134 – Galvanized Primer, Water-Based.
a. Product:
1) Sherwin-Williams: Pro Industrial Pro -Cryl Universal Primer or approved equal.
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2) Benjamin Moore: Ultra Spec HP Acrylic Metal Primer (HP 04) or approved equal.
3. Topcoats (2 coats, sheen as scheduled): MPI #10 (Flat), MPI #11 (Low Sheen), or MPI #15 (Semi-Gloss).
a. Product:
1) Sherwin-Williams: A-100 Exterior Acrylic Latex or approved equal. 2) Benjamin Moore: Regal Select Exterior Latex or approved equal.
B. Interior Gypsum Board/Plaster (Ceilings and Walls – Touch-Up)
1. System: MPI INT 9.2A – Interior, Latex over Latex Sealer.
2. Primer: MPI #50 – Latex Primer Sealer.
a. Product:
1) Sherwin-Williams: Premium Wall & Wood Primer (Multi -Purpose Latex Primer) or approved equal.
2) Benjamin Moore: Ultra Spec 500 Interior Primer (Primer 536) or approved equal.
3. Intermediate/Topcoats: MPI #52 / #53 – Interior Latex (Flat or per gloss schedule). a. Sherwin-Williams: ProMar 200 Zero VOC Interior Latex or approved equal. b. Benjamin Moore: Regal Select Interior Latex or approved equal.
END OF SECTION 099100