HomeMy WebLinkAbout07 53 23 EPDM Roofing.DOCPEDCOR SQUARE; BUILDING 5
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SECTION 07 53 23 - ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM) ROOFING
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:
1. Adhered ethylene-propylene-diene-monomer (EPDM) roofing system.
2. Vapor retarder.
3. Roof insulation.
B. Related Requirements:
1. Section 06 10 00 "Rough Carpentry” for wood nailers, curbs, and blocking.
2. Section 07 62 00 "Sheet Metal Flashing and Trim" for metal roof flashings and counter
flashings.
3. Section 07 92 00 "Joint Sealants" for joint sealants, joint fillers, and joint preparation.
1.3 DEFINITIONS
A. Roofing Terminology: Definitions in ASTM D 1079 and glossary of NRCA's "The NRCA Roofing
and Waterproofing Manual" apply to work of this Section.
1.4 PREINSTALLATION MEETINGS
A. Preliminary Roofing Conference: Before starting roof deck construction, conduct conference at
Project site.
1. Meet with Owner, Architect, Owner's insurer if applicable, testing and inspecting agency
representative, roofing Installer, roofing system manufacturer's representative, deck
Installer, and installers whose work interfaces with or affects roofing, including installers
of roof accessories and roof-mounted equipment.
2. Review methods and procedures related to roofing installation, including manufacturer's
written instructions.
3. Review and finalize construction schedule, and verify availability of materials, Installer's
personnel, equipment, and facilities needed to make progress and avoid delays.
4. Examine deck substrate conditions and finishes for compliance with requirements,
including flatness and fastening.
5. Review structural loading limitations of roof deck during and after roofing.
6. Review base flashings, special roofing details, roof drainage, roof penetrations,
equipment curbs, and condition of other construction that affects roofing system.
7. Review governing regulations and requirements for insurance and certificates if
applicable.
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8. Review temporary protection requirements for roofing system during and after
installation.
9. Review roof observation and repair procedures after roofing installation.
B. Pre-installation Roofing Conference: Conduct conference at Project site.
1. Meet with Owner, Architect, Owner's insurer if applicable, testing and inspecting agency
representative, roofing Installer, roofing system manufacturer's representative, deck
Installer, and installers whose work interfaces with or affects roofing, including installers
of roof accessories and roof-mounted equipment.
2. Review methods and procedures related to roofing installation, including manufacturer's
written instructions.
3. Review and finalize construction schedule, and verify availability of materials, Installer's
personnel, equipment, and facilities needed to make progress and avoid delays.
4. Examine deck substrate conditions and finishes for compliance with requirements,
including flatness and fastening.
5. Review structural loading limitations of roof deck during and after roofing.
6. Review base flashings, special roofing details, roof drainage, roof penetrations,
equipment curbs, and condition of other construction that affects roofing system.
7. Review governing regulations and requirements for insurance and certificates if
applicable.
8. Review temporary protection requirements for roofing system during and after
installation.
9. Review roof observation and repair procedures after roofing installation.
1.5 ACTION SUBMITTALS
A. Product Data: For each type of product.
B. Shop Drawings: For roofing system. Include plans, elevations, sections, details, and
attachments to other work, including:
1. Base flashings and membrane terminations.
2. Tapered insulation, including slopes.
3. Roof plan showing orientation of steel roof deck and orientation of roofing and fastening
spacings and patterns for mechanically fastened roofing.
4. Insulation fastening patterns for corner, perimeter, and field-of-roof locations.
C. Samples for Verification: For the following products:
1. Sheet roofing, of color required.
2. Aggregate surfacing material in gradation and color required.
3. Roof paver, full sized, in each color and texture required.
4. Walkway pads or rolls, of color required.
1.6 INFORMATIONAL SUBMITTALS
A. Qualification Data: For Installer and manufacturer.
B. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system
complies with requirements specified in "Performance Requirements" Article.
1. Submit evidence of complying with performance requirements.
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C. Product Test Reports: For components of roofing system, tests performed by manufacturer and
witnessed by a qualified testing agency.
D. Research/Evaluation Reports: For components of roofing system, from ICC-ES.
E. Field quality-control reports.
F. Sample Warranties: For manufacturer's special warranties.
1.7 CLOSEOUT SUBMITTALS
A. Maintenance Data: For roofing system to include in maintenance manuals.
1.8 QUALITY ASSURANCE
A. Manufacturer Qualifications: A qualified manufacturer that is UL listed and FM Global approved
for roofing system identical to that used for this Project.
B. Installer Qualifications: 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. Refer also to Specification Section 01 40 00 “Quality Requirements.”
1.9 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.
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.
1.10 FIELD CONDITIONS
A. Weather Limitations: Proceed with installation only when existing and forecasted weather
conditions permit roofing system to be installed according to manufacturer's written instructions
and warranty requirements.
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1.11 WARRANTY
A. Special Warranty: Manufacturer agrees to repair or replace components of roofing system that
fail in materials or workmanship within specified warranty period.
1. Special warranty includes membrane roofing, base flashings, fasteners, cover boards,
roofing accessories, roof pavers, and other components of roofing system.
2. Warranty Period: 10 years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Source Limitations: Obtain components including roof insulation and fasteners for roofing
system from same manufacturer as membrane roofing or manufacturer approved by membrane
roofing manufacturer.
2.2 PERFORMANCE REQUIREMENTS
A. General Performance: Installed roofing and base flashings shall withstand specified uplift
pressures, thermally induced movement, and exposure to weather without failure due to
defective manufacture, fabrication, installation, or other defects in construction. Roofing and
base flashings shall remain watertight.
1. Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when
tested according to ASTM G 152, ASTM G 154, or ASTM G 155.
2. Impact Resistance: Roofing system shall resist impact damage when tested according to
ASTM D 3746 or ASTM D 4272.
B. Material Compatibility: Roofing materials shall be compatible with one another and adjacent
materials under conditions of service and application required, as demonstrated by roofing
manufacturer based on testing and field experience.
C. Roofing System Design: Tested by a qualified testing agency to resist the uplift pressures
required by applicable building code.
D. FM Global Listing: Roofing, base flashings, and component materials shall comply with
requirements in FM Global 4450 or FM Global 4470 as part of a roofing system, and shall be
listed in FM Global's "RoofNav" for Class 1 or noncombustible construction, as applicable.
Identify materials with FM Global markings.
1. Fire/Windstorm Classification: Class 1A-120.
2. Hail-Resistance Rating: MH.
E. Solar Reflectance Index: Not less than 78 when calculated according to ASTM E 1980, based
on testing identical products by a qualified testing agency.
F. Energy Performance: Roofing system shall have an initial solar reflectance of not less than 0.70
and an emissivity of not less than 0.75 when tested according to CRRC-1.
G. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A; for application and roof slopes
indicated; testing by a qualified testing agency. Identify products with appropriate markings of
applicable testing agency.
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H. Fire-Resistance Ratings: Comply with fire-resistance-rated assembly designs indicated. Identify
products with appropriate markings of applicable testing agency.
2.3 EPDM ROOFING
A. EPDM: ASTM D 4637, Type I, non-reinforced, uniform, flexible EPDM sheet.
1. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
a. Carlisle SynTec Incorporated.
b. Firestone Building Products.
2. Thickness: 60 mils, nominal.
3. Exposed Face Color: White on black.
2.4 AUXILIARY ROOFING MATERIALS
A. General: Auxiliary materials recommended by roofing system manufacturer for intended use
and compatible with roofing.
1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having
jurisdiction.
2. Adhesives and sealants that are not on the exterior side of weather barrier shall comply
with the following limits for VOC content:
a. Plastic Foam Adhesives: 50 g/L.
b. Gypsum Board and Panel Adhesives: 50 g/L.
c. Multipurpose Construction Adhesives: 70 g/L.
d. Fiberglass Adhesives: 80 g/L.
e. Single-Ply Roof Membrane Adhesives: 250 g/L.
f. Single-Ply Roof Membrane Sealants: 450 g/L.
g. Non-membrane Roof Sealants: 300 g/L.
h. Sealant Primers for Nonporous Substrates: 250 g/L.
i. Sealant Primers for Porous Substrates: 775 g/L.
j. Other Adhesives and Sealants: 250 g/L.
B. Sheet Flashing: 60-mil- thick EPDM, partially cured or cured, according to application.
C. Protection Sheet: Epichlorohydrin or neoprene non-reinforced flexible sheet, 55- to 60-mil- thick,
recommended by EPDM manufacturer for resistance to hydrocarbons, non-aromatic solvents,
grease, and oil.
D. Bonding Adhesive: Manufacturer's standard.
E. Seaming Material: Manufacturer's standard, synthetic-rubber polymer primer and 3-inch- wide
minimum, butyl splice tape with release film.
F. Lap Sealant: Manufacturer's standard, single-component sealant.
G. Water Cutoff Mastic: Manufacturer's standard butyl mastic sealant.
H. Metal Termination Bars: Manufacturer's standard, predrilled stainless-steel or aluminum bars,
approximately 1 by 1/8 inch thick; with anchors.
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I. Metal Battens: Manufacturer's standard, aluminum-zinc-alloy-coated or zinc-coated steel sheet,
approximately 1 inch wide by 0.05 inch thick, pre-punched.
J. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-
resistance provisions in FM Global 4470, designed for fastening membrane to substrate, and
acceptable to roofing system manufacturer.
K. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet
flashings, molded pipe boot flashings, preformed inside and outside corner sheet flashings,
reinforced EPDM securement strips, T-joint covers, in-seam sealants, termination reglets, cover
strips, and other accessories.
1. Provide white flashing accessories for white EPDM membrane roofing.
2.5 SUBSTRATE BOARDS
A. Substrate Board: ASTM C 1177, glass-mat, water-resistant gypsum substrate, Type X, 5/8 inch
thick.
1. Products: Subject to compliance with requirements, provide the following:
a. Georgia-Pacific Corporation; Dens Deck.
B. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-
resistance provisions in FM Global 4470, designed for fastening substrate panel to roof deck.
2.6 VAPOR RETARDER
A. Polyethylene Film: ASTM D 4397, 6 mils thick, minimum, with maximum permeance rating of
0.13 perm.
1. Tape: Pressure-sensitive tape of type recommended by vapor-retarder manufacturer for
sealing joints and penetrations in vapor retarder.
2. Adhesive: Manufacturer's standard lap adhesive, FM Global approved for vapor-retarder
application.
2.7 ROOF INSULATION
A. General: Preformed roof insulation boards manufactured or approved by EPDM roofing
manufacturer, selected from manufacturer's standard sizes suitable for application, of
thicknesses indicated.
B. Polyisocyanurate Board Insulation: ASTM C 1289, Type II, Class 1, Grade 2, felt or glass-fiber
mat facer on both major surfaces.
1. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
a. Atlas Roofing Corporation.
b. Carlisle SynTec Incorporated.
c. Firestone Building Products.
d. GAF Materials Corporation.
e. Johns Manville.
f. Rmax, Inc.
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C. Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/4 inch per
12 inches unless otherwise indicated.
D. Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where
indicated for sloping to drain. Fabricate to slopes indicated.
2.8 INSULATION ACCESSORIES
A. General: Roof insulation accessories recommended by insulation manufacturer for intended use
and compatibility with roofing.
B. Insulation Adhesive: Insulation manufacturer's recommended adhesive formulated to attach roof
insulation to substrate or to another insulation layer as follows:
1. Bead-applied, low-rise, one-component or multicomponent urethane adhesive.
C. Cover Board: ASTM C 1177, glass-mat, water-resistant gypsum substrate, 1/4 inch thick.
1. Products: Subject to compliance with requirements, provide the following:
a. Georgia-Pacific Corporation; Dens Deck.
D. Protection Mat: Woven or nonwoven polypropylene, polyolefin, or polyester fabric, water
permeable and resistant to UV degradation, type and weight as recommended by roofing
system manufacturer for application.
2.9 PAVERS
A. Rubber Roof Pavers: Interlocking, lightweight rubber units, 24 by 24 by 2-1/4 inches, 6 lb./sq. ft.;
with grooved back for four-way drainage, beveled and doweled; and as follows:
1. Products: Subject to compliance with requirements, provide the following:
a. Carlisle SynTec Incorporated; Interlocking Rubber Paver.
2.10 WALKWAYS
A. Flexible Walkways: Factory-formed, nonporous, heavy-duty, solid-rubber, slip-resisting, surface-
textured walkway pads, approximately 3/16 inch thick and acceptable to roofing system
manufacturer.
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 roof openings and penetrations are in place, curbs are set and braced, and
roof-drain bodies are securely clamped in place.
2. 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.
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3.2 PREPARATION
A. Clean substrate of dust, debris, moisture, and other substances detrimental to roofing
installation according to 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.
C. Install insulation strips according to acoustical roof deck manufacturer's written instructions.
3.3 ROOFING INSTALLATION, GENERAL
A. Install roofing system according to 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 the workday or when rain is
forecast. Remove and discard temporary seals before beginning work on adjoining roofing.
3.4 VAPOR-RETARDER INSTALLATION
A. Polyethylene Film: Loosely lay polyethylene-film vapor retarder in a single layer over area to
receive vapor retarder, side and end lapping each sheet a minimum of 2 inches and 6 inches,
respectively. Continuously seal side and end laps with adhesive.
B. Completely seal vapor retarder at terminations, obstructions, and penetrations to prevent air
movement into roofing system.
3.5 INSULATION INSTALLATION
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 tapered insulation under area of roofing to conform to slopes indicated.
D. Install insulation under area of roofing to achieve required thickness. Where overall insulation
thickness is 2.7 inches or greater, install two or more layers with joints of each succeeding layer
staggered from joints of previous layer a minimum of 6 inches in each direction.
E. Trim surface of insulation where necessary at roof drains so completed surface is flush and
does not restrict flow of water.
F. Install insulation with long joints of insulation in a continuous straight line with end joints
staggered between rows, abutting edges and ends between boards. Fill gaps exceeding 1/4
inch with insulation.
1. Cut and fit insulation within 1/4 inch of nailers, projections, and penetrations.
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G. Adhered Insulation: Install each layer of insulation and adhere to subs-ballasted roofing.
substrate as follows:
1. Set each layer of insulation in a uniform coverage of full-spread insulation adhesive,
firmly pressing and maintaining insulation in place.
H. Install cover boards over insulation with long joints in continuous straight lines with end joints
staggered between rows. Offset joints of insulation below a minimum of 6 inches in each
direction. Loosely butt cover boards together and fasten to roof deck.
1. Fasten cover boards according to requirements in FM Global's "RoofNav" for specified
Windstorm Resistance Classification.
2. Fasten cover boards to resist uplift pressure at corners, perimeter, and field of roof.
3.6 ADHERED MEMBRANE ROOFING INSTALLATION
A. Adhere roofing over area to receive roofing according to membrane roofing system
manufacturer's written instructions. Unroll membrane roofing and allow to relax before installing.
B. Start installation of roofing in presence of roofing system manufacturer's technical personnel.
C. Accurately align roofing, and maintain uniform side and end laps of minimum dimensions
required by manufacturer. Stagger end laps.
D. Bonding Adhesive: Apply to substrate and underside of roofing at rate required by manufacturer,
and allow to partially dry before installing roofing. Do not apply to splice area of roofing.
E. In addition to adhering, mechanically fasten roofing securely at terminations, penetrations, and
perimeters.
F. Apply roofing with side laps shingled with slope of roof deck where possible.
G. Adhesive Seam Installation: Clean both faces of splice areas, apply splicing cement, and firmly
roll side and end laps of overlapping roofing according to manufacturer's written instructions to
ensure a watertight seam installation. Apply lap sealant and seal exposed edges of roofing
terminations.
1. Apply a continuous bead of in-seam sealant before closing splice if required by roofing
system manufacturer.
H. Repair tears, voids, and lapped seams in roofing that do not comply with requirements.
I. Spread sealant or mastic bed over deck-drain flange at roof drains, and securely seal
membrane roofing in place with clamping ring.
J. Adhere protection sheet over membrane roofing at locations indicated.
3.7 BASE FLASHING INSTALLATION
A. Install sheet flashings and preformed flashing accessories, and adhere to substrates according
to 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.
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C. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet
flashing.
D. Clean splice areas, apply splicing cement, and firmly roll side and end laps of overlapping
sheets to ensure a watertight seam installation. Apply lap sealant and seal exposed edges of
sheet flashing terminations.
E. Terminate and seal top of sheet flashings.
3.8 COATING INSTALLATION
A. Apply coatings to roofing and base flashings according to manufacturer's written
recommendations, by spray, roller, or other suitable application method.
3.9 WALKWAY INSTALLATION
A. Flexible Walkways: Install walkway products in locations indicated. Adhere walkway products to
substrate with compatible adhesive according to roofing system manufacturer's written
instructions.
B. Roof-Paver Walkways: Install walkway roof pavers according to manufacturer's written
instructions in locations indicated, to form walkways. Leave 3 inches of space between adjacent
roof pavers.
3.10 FIELD QUALITY CONTROL
A. Testing Agency: Engage a qualified testing agency to inspect substrate conditions, surface
preparation, membrane application, flashings, protection, and drainage components, and to
furnish reports to Architect.
B. Flood Testing: Flood test each roofing area for leaks, according to recommendations in
ASTM D 5957, after completing roofing and flashing but before overlying construction is placed.
Install temporary containment assemblies, plug or dam drains, and flood with potable water.
1. Flood to an average depth of 2-1/2 inches with a minimum depth of 1 inch and not
exceeding a depth of 4 inches. Maintain 2 inches of clearance from top of base flashing.
2. Flood each area for 24 hours.
3. After flood testing, repair leaks, repeat flood tests, and make further repairs until roofing
and flashing installations are watertight.
C. Final Roof Inspection: Arrange for roofing system manufacturer's technical personnel to inspect
roofing installation on completion.
D. Repair or remove and replace components of roofing system where inspections indicate that
they do not comply with specified requirements.
E. Additional testing and inspecting, at Contractor's expense, will be performed to determine if
replaced or additional work complies with specified requirements.
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3.11 PROTECTING AND CLEANING
A. Protect membrane roofing system from damage and wear during remainder of construction
period. When remaining construction does not affect or endanger roofing, inspect roofing 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 membrane roofing system that does not comply with
requirements, repair substrates, and repair or reinstall membrane roofing system to a condition
free of damage and deterioration at time of Substantial Completion and according to warranty
requirements.
C. Clean overspray and spillage from adjacent construction using cleaning agents and procedures
recommended by manufacturer of affected construction.
END OF SECTION 07 53 23