This Product MasterSpec Section modifies the original MasterSpec text, and does not include the full content of the original MasterSpec Section


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Copyright 2011 AIA MasterSpec Short Form 08/11

PRODUCT MASTERSPEC LICENSED BY ARCOM TO GEORGIA-PACIFIC GYPSUM LLC.


Copyright 2011 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

This Product MasterSpec Section is licensed by ARCOM to Georgia-Pacific Gypsum LLC ("Licensee").

This Product MasterSpec Section modifies the original MasterSpec text, and does not include the full content of the original MasterSpec Section.

Revisions made to the original MasterSpec text are made solely by the Licensee and are not endorsed by, or representative of the opinions of, ARCOM or The American Institute of Architects (AIA). Neither AIA nor ARCOM are liable in any way for such revisions or for the use of this Product MasterSpec Section by any end user. A qualified design professional should review and edit the document to suit project requirements.

For more information, contact Georgia-Pacific Gypsum LLC, 133 Peachtree Street, Atlanta, GA 30303; Phone: (800) 225-6119; Website: www.gpgypsum.com; Email: techservices@gapac.com.

For information about MasterSpec contact ARCOM at (800) 424-5080 or visit www.MasterSpec.com.

SECTION 075323 - ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM) ROOFING

Revise this Section by deleting and inserting text to meet Project-specific requirements.

This Section uses the term "Architect." Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1SUMMARY

A.Section Includes:

1.Adhered ethylene-propylene-diene-monomer (EPDM) roofing system.

2.Mechanically fastened ethylene-propylene-diene-monomer (EPDM) roofing system.

3.Loosely laid and ballasted ethylene-propylene-diene-monomer (EPDM) roofing system.

4.Roof insulation.

1.2DEFINITIONS

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.

1.3PREINSTALLATION MEETINGS

Retain "Preinstallation Roofing Conference" Paragraph below if Work of this Section is extensive or complex enough to justify a preinstallation conference.

A.Preinstallation Roofing Conference: Conduct conference at [Project site] <Insert location>.

1.4ACTION SUBMITTALS

A.Product Data: For each type of product.

B.LEED Submittals:

"Product Test Reports for Credit SS 7.2" Subparagraph below applies to LEED-NC, LEED-CS, and LEED for Schools; coordinate with requirements for roof materials.

1.Product Test Reports for Credit SS 7.2: For roof materials, documentation indicating that roof materials comply with Solar Reflectance Index requirement.

"Product Data for Credit IEQ 4.1" Subparagraph applies to LEED-NC and LEED-CS; coordinate with requirements for adhesives and sealants.

2.Product Data for Credit IEQ 4.1: For adhesives and sealants used inside the weatherproofing system, documentation including printed statement of VOC content.

"Laboratory Test Reports for Credit IEQ 4.1" Subparagraph below applies to LEED for Schools.

3.Laboratory Test Reports for Credit IEQ 4.1: For adhesives and sealants used inside the weatherproofing system, documentation indicating that products comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers."

C.Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachments to other work.

D.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.

1.5INFORMATIONAL SUBMITTALS

A.Research/Evaluation Reports: For components of roofing system, from ICC-ES.

B.Sample Warranties: For manufacturer's special warranties.

1.6CLOSEOUT SUBMITTALS

A.Maintenance Data: For roofing system to include in maintenance manuals.

1.7QUALITY ASSURANCE

A.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.

1.8WARRANTY

When warranties are required, verify with Owner's counsel that warranties stated in this article are not less than remedies available to Owner under prevailing local laws.

Retain "Special Warranty" Paragraph below if manufacturer's labor-and-materials warranty, covering roofing system, is required. Verify coverage offered by manufacturers, because roof insulation, fasteners, and other roofing components may be excluded unless part of a roofing manufacturer's roofing system warranty. If inserting special provisions, retitle paragraph "Special Roofing Manufacturer's Warranty." Verify warranty availability, and coordinate selection of manufacturers accordingly.

A.Special Warranty: Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within specified warranty period.

Verify available roofing system warranties and warranty periods with manufacturers.

1.Warranty Period: [10] [15] [20] <Insert number> years from date of Substantial Completion.

PART 2 - PRODUCTS

See Editing Instruction No. 1 in the Evaluations for cautions about named manufacturers and products. For an explanation of options and Contractor's product selection procedures, see Section 016000 "Product Requirements."

2.1MANUFACTURERS

Retain "Source Limitations" Paragraph below if required to comply with FM Global, UL, or another building code, or to comply with provisions of manufacturer's special warranty. Consult manufacturer's literature because requirements vary.

A.Source Limitations: Obtain components including [roof insulation] [fasteners] <Insert products> for roofing system from [same manufacturer as membrane roofing] [or] [manufacturer approved by membrane roofing manufacturer].

2.2PERFORMANCE REQUIREMENTS

A.Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155.

B.Impact Resistance: Roofing system shall resist impact damage when tested according to ASTM D 3746 or ASTM D 4272.

Retain "Roofing System Design" Paragraph below if roofing system is to be designed to withstand uplift pressure established by ASCE/SEI 7. Indicate dimensions of corners, perimeter, and field of roof on Drawings.

C.Roofing System Design: Tested by a qualified testing agency to resist the following uplift pressures:

1.Corner Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>.

2.Perimeter Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>.

3.Field-of-Roof Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>.

Retain "Solar Reflectance Index," "Energy Star Listing," or "Energy Performance" Paragraph below if "cool-roof" performance is required. Verify that EPDM roofing specified complies before retaining.

Retain "Solar Reflectance Index" Paragraph below if required for LEED-NC, LEED-CS, or LEED for Schools Credit SS 7.2. Requirement is minimum for roofs with slopes of 2:12 or less; revise if using roofs with slopes steeper than 2:12.

D.Solar Reflectance Index: Not less than [78] [29] when calculated according to ASTM E 1980, based on testing identical products by a qualified testing agency.

Retain "Energy Star Listing" Paragraph below for roofs that must comply with the DOE's ENERGY STAR requirements. The DOE's ENERGY STAR "Roof Products Qualified Product List" is available in PDF at www.energystar.gov.

E.Energy Star Listing: Roofing system shall be listed on the DOE's ENERGY STAR "Roof Products Qualified Product List" for [low] [steep]-slope roof products.

Usually retain "Energy Performance" Paragraph below for roofs that must comply with California Energy Commission's CEC-Title 24. Options are values required for low-slope roofs by prescriptive approach; revise if other values are required for building-envelope trade-off approach or whole-building performance approach. A list of products tested according to CRRC-1 with their test values is available in PDF at www.coolroofs.org.

F.Energy Performance: Roofing system shall have an initial solar reflectance index of not less than [0.70] <Insert value> and an emissivity of not less than [0.75] <Insert value> when tested according to CRRC-1.

Retain one of three options in "Exterior Fire-Test Exposure" Paragraph below based on fire classification of roof assembly and roof covering. Delete paragraph if including exterior fire-test exposure in FM Global class designation.

G.Exterior Fire-Test Exposure: ASTM E 108 or UL 790, [Class A] [Class B] [Class C]; for application and roof slopes indicated; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.

Retain "Fire-Resistance Ratings" Paragraph below only if products specified are part of a fire-resistance-rated assembly. Indicate rating, testing agency, and testing agency's design designation on Drawings.

H.Fire-Resistance Ratings: Comply with fire-resistance-rated assembly designs indicated. Identify products with appropriate markings of applicable testing agency.

2.3EPDM ROOFING

Class A exterior fire-test rating for either an adhered or a mechanically fastened EPDM roofing system may require a specially formulated fire-retardant sheet; consult manufacturer.

A.EPDM: ASTM D 4637, [Type I, nonreinforced,] [Type II, scrim or fabric internally reinforced,] uniform, flexible EPDM sheet.

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1.Manufacturers: Subject to compliance with requirements, [provide products by the following] [provide products by one of the following] [available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following]:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

2.Basis-of-Design Product: Subject to compliance with requirements, provide [product indicated on Drawings] <Insert manufacturer's name; product name or designation> or comparable product by one of the following:

a.Carlisle SynTec Incorporated.

b.ERSystems.

c.Firestone Building Products.

d.GAF Materials Corporation.

e.GenFlex Roofing Systems.

f.International Diamond Systems.

g.Johns Manville.

h.Lexcan Limited.

i.Mule-Hide Products Co., Inc.

j.Roofing Products International, Inc.

k.StaFast Building Products.

l.Versico Incorporated.

m.<Insert manufacturer's name>.

Retain one of four options in "Thickness" Subparagraph below, or revise to suit Project.

3.Thickness: [45 mils (1.1 mm)] [60 mils (1.5 mm)] [75 mils (1.9 mm)] [90 mils (2.2 mm)] <Insert thickness>, nominal.

Retain one color option in "Exposed Face Color" Subparagraph below.

4.Exposed Face Color: [Black] [White on black] <Insert color>.

2.4AUXILIARY 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.

Retain first subparagraph below if required for LEED-NC or LEED-CS Credit IEQ 4.1.

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.Nonmembrane 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.

Retain subparagraph below if required for LEED for Schools.

3.Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers."

B.Sheet Flashing: 60-mil- (1.5-mm-) thick EPDM, partially cured or cured, according to application.

Retain "Protection Sheet" Paragraph below if applicable. Carlisle and Versico offer epichlorohydrin, and Firestone offers neoprene as a protection sheet over EPDM to resist hydrocarbons, non-aromatic solvents, grease, and oil.

C.Protection Sheet: Epichlorohydrin or neoprene nonreinforced flexible sheet, 55- to 60-mil- (1.4- to 1.5-mm-) thick, recommended by EPDM manufacturer for resistance to hydrocarbons, non-aromatic solvents, grease, and oil.

Retain "Bonding Adhesive" Paragraph below for fully adhering standard EPDM membranes and flashings to substrate. Also retain paragraph for adhering perimeters of mechanically fastened or loosely laid and ballasted membranes if applicable.

D.Bonding Adhesive: Manufacturer's standard[, water based].

Retain one or both options in "Seaming Material" Paragraph below based on seaming method required. Retain both options if selection of seaming method is Contractor's choice.

E.Seaming Material: [Single-component, butyl splicing adhesive and splice cleaner] [Manufacturer's standard, synthetic-rubber polymer primer and 3-inch- (75-mm-) wide minimum, butyl splice tape with release film].

F.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.

G.Miscellaneous Accessories: Provide lap sealant, water cutoff mastic, metal termination bars, metal battens, 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.

2.5SUBSTRATE BOARDS

Retain one or more of four "Substrate Board" paragraphs below if required, or delete this article. Substrate boards may serve as building-code-required thermal barriers, separating foam insulation from steel or wood deck. They may also be used over steel deck as part of a fire-resistance-rated roofing system or to provide a smooth substrate for a vapor retarder. Verify suitability for application. Roofing manufacturers do not recognize substrate boards to be part of roofing system.

A.Substrate Board: ASTM C 1396/C 1396M, Type X gypsum board, 5/8 inch (16 mm) thick.

B.Substrate Board: ASTM C 1177/C 1177M, glass-mat, water-resistant gypsum substrate, [1/4 inch (6 mm)] [1/2 inch (13 mm)] [Type X, 5/8 inch (16 mm)] thick.

1.Basis-of-Design Products: Subject to compliance with requirements, provide Georgia-Pacific Gypsum LLC; DensDeck or comparable product by one of the following:

a.CertainTeed Corporation.

b..

c.USG Corporation.

d.<Insert manufacturer's name>.

C.Substrate Board: ASTM C 1278/C 1278M, cellulosic-fiber-reinforced, water-resistant gypsum substrate, [1/4 inch (6 mm)] [3/8 inch (10 mm)] [1/2 inch (13 mm)] [5/8 inch (16 mm)] thick.

Retain "Products" Subparagraph and list of manufacturers and products below to require specific products or a comparable product from other manufacturers.

1.Products: Subject to compliance with requirements, [provide the following] [provide one of the following] [available products that may be incorporated into the Work include, but are not limited to, the following]:

2.USG Corporation; Securock Gypsum-Fiber Roof Board.

a.<Insert manufacturer's name; product name or designation>.

D.Substrate Board: ASTM C 728, perlite board, [3/4 inch (19 mm)] [1 inch (25 mm)] thick, seal coated.

E.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.

2.6ROOF INSULATION

If retaining more than one insulation material in this article, indicate location of each on Drawings, or indicate where each layer is used in roofing system. If allowing Contractor to select more than one insulation material, limit options to insulations that comply with Project requirements and limitations. Coordinate insulation selection and thicknesses indicated on Drawings with adjoining construction as well as HVAC design and energy program.

A.Extruded-Polystyrene Board Insulation: ASTM C 578, [Type IV, 1.6-lb/cu. ft. (26-kg/cu. m)] [Type X, 1.3-lb/cu. ft. (21-kg/cu. m)] minimum density, square edged.

Retain "Molded-Polystyrene Board Insulation" Paragraph below for homogenous, unfaced, molded-polystyrene insulation; retain one of three options for density of insulation. Higher-density insulation offers improved compressive resistance, greater resistance to crushing under construction loads, better ability to span steel deck flutes, and more rigid substrate. However, costs increase as density increases.

B.Molded-Polystyrene Board Insulation: ASTM C 578, [Type II, 1.35-lb/cu. ft. (22-kg/cu. m)] [Type VIII, 1.15-lb/cu. ft. (18-kg/cu. m)] [Type IX, 1.8-lb/cu. ft. (29-kg/cu. m)] minimum density.

Retain "Composite Molded-Polystyrene Board Insulation" Paragraph below for composite molded-polystyrene insulation.

C.Composite Molded-Polystyrene Board Insulation: ASTM C 578, [Type II, 1.35-lb/cu. ft. (22-kg/cu. m)] [Type VIII, 1.15-lb/cu. ft. (18-kg/cu. m)] [Type IX, 1.8-lb/cu. ft. (29-kg/cu. m)] minimum density, with factory-applied facings, as follows:

Retain one of two "Facer" subparagraphs below, or revise to another board facer if required. Verify availability with manufacturers. If a field-installed cover board is required, see "Insulation Accessories" Article for options.

1.Facer: ASTM C 208, Type II, Grade 2, cellulosic-fiber insulation board, asphalt coated, 1/2 inch (13 mm) thick.

2.Facer: DOC PS 2, Exposure 1, oriented strand board, 7/16 inch (11 mm) thick.

Retain "Polyisocyanurate Board Insulation" Paragraph below for polyisocyanurate insulation with felt or glass-fiber mat facers. Retain one of two options; second has higher compressive strength. Revise to Type I, Class 1 if aluminum-foil-faced insulation is required. Verify availability of options with insulation manufacturers. Retain paragraph with "Composite Polyisocyanurate Board Insulation" paragraph below if combining composite and noncomposite polyisocyanurate board insulation in two or more layers.

D.Polyisocyanurate Board Insulation: ASTM C 1289, [Type II, Class 1, Grade 2] [Type II, Class 1, Grade 3], felt or glass-fiber mat facer on both major surfaces.

Retain "Composite Polyisocyanurate Board Insulation" Paragraph below for composite polyisocyanurate insulation faced with factory-applied facing board on one surface and felt or glass-fiber mat facer on the other. Verify availability of facing board types and thicknesses with composite insulation manufacturers.

E.Composite Polyisocyanurate Board Insulation: ASTM C 1289, with factory-applied facing board on one major surface, as indicated below by type, and felt or glass-fiber mat facer on the other.

1.Type IV, cellulosic-fiber-insulation-board facer, Grade 2, 1/2 inch (13 mm) thick.

2.Type V, oriented strand board facer, 7/16 inch (11 mm) thick.

3.Type VII, glass-mat-faced gypsum board facer, 1/4 inch (6 mm) thick.

F.Perlite Board Insulation: ASTM C 728, rigid, mineral-aggregate thermal insulation board composed of expanded perlite, cellulosic fibers, binders, and waterproofing agents with top surface seal coated.

G.Cellulosic-Fiber Board Insulation: ASTM C 208, Type II, Grade 2, fibrous-felted, rigid insulation boards of wood fiber or other cellulosic-fiber and water-resistant binders, asphalt impregnated, chemically treated for deterioration.

Retain "Tapered Insulation" Paragraph below if tapered insulation is required. Most of the commonly used insulations are available in tapered form; verify with manufacturers. With some exceptions, codes require roof slopes to be not less than 1/4 inch per 12 inches (1:48). Insulation is manufactured with tapers ranging from 1/8 to 1/2 inch per 12 inches (1:96 to 1:24).

H.Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of [1/4 inch per 12 inches (1:48)] <Insert slope> unless otherwise indicated.

Retain paragraph below with or without "Tapered Insulation" Paragraph above.

I.Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Fabricate to slopes indicated.

2.7INSULATION ACCESSORIES

Retain "Fasteners" Paragraph below if insulation requires mechanical fastening. Retain option if separate cover boards require fastening.

A.Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Global 4470, designed for fastening roof insulation[ and cover boards] to substrate, and acceptable to roofing system manufacturer.

B.Insulation Adhesive: Insulation manufacturer's recommended adhesive formulated to attach roof insulation to substrate or to another insulation layer.

Retain one of four "Cover Board" paragraphs below if required. Cover or overlay boards are usually needed over noncomposite foam insulation.

C.Cover Board: ASTM C 208, Type II, Grade 2, cellulosic-fiber insulation board, 1/2 inch (13 mm) thick.

D.Cover Board: DOC PS 2, Exposure 1, oriented strand board, 7/16 inch (11 mm) thick.

E.Cover Board: ASTM C 1177/C 1177M, glass-mat, water-resistant gypsum substrate, [1/4 inch (6 mm)] [1/2 inch (13 mm)] [5/8 inch (16 mm)] thick[, factory primed].

1.Basis-of-Design Products: Subject to compliance with requirements, provide Georgia-Pacific Gypsum LLC; DensDeck or comparable product by one of the following:

a.CertainTeed Corporation.

b..

c.USG Corporation.

d.<Insert manufacturer's name>.

F.Cover Board: ASTM C 1278/C 1278M, cellulosic-fiber reinforced, water-resistant gypsum substrate, [1/4 inch (6 mm)] [3/8 inch (10 mm)] [1/2 inch (13 mm)] [5/8 inch (16 mm)] thick.

Retain "Products" Subparagraph and list of manufacturers and products below to require specific products or a comparable product from other manufacturers.

1.Products: Subject to compliance with requirements, [provide the following] [provide one of the following] [available products that may be incorporated into the Work include, but are not limited to, the following]:

a.USG Corporation; Securock Gypsum-Fiber Roof Board.

b.<Insert manufacturer's name; product name or designation>.

Protection mats in "Protection Mat" Paragraph below may be placed on roofing as protection from roof pavers or crushed-aggregate ballast.

G.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.

2.8ASPHALT MATERIALS

Retain this article if adhering roof insulation.

A.Roofing Asphalt: [ASTM D 312, Type III or Type IV] [ASTM D 6152, SEBS modified].

Retain "Asphalt Primer" Paragraph below if priming concrete roof deck.

B.Asphalt Primer: ASTM D 41/D 41M.

2.9BALLAST

Retain this article for loosely laid and ballasted installations.

Retain "Aggregate Ballast" Paragraph below for aggregate-ballasted installations. If smooth-faced aggregate is preferred, verify availability and cost. Membrane roofing in contact with sharper crushed aggregate needs added protection to prevent puncturing. Insert requirements for color if required.

A.Aggregate Ballast: [Smooth, washed, riverbed gravel or other acceptable smooth-faced stone] [Crushed gravel or crushed stone] that withstands weather exposure without significant deterioration and does not contribute to membrane degradation, of the following size:

Retain one or more of three "Size" subparagraphs below to suit Project. Revise descriptions if other sizes are permitted. SPRI RP-4 also allows ASTM D 448, Sizes 1, 2, 3, or 24 to be used where Size 4 is required, and Size 1 where Size 2 is required.

1.Size: ASTM D 448, Size 4, ranging in size from 3/4 to 1-1/2 inches (19 to 38 mm).

2.Size: ASTM D 448, Size 2, ranging in size from 1-1/2 to 2-1/2 inches (38 to 63 mm).

Ballast size in "Size" Subparagraph below is based on recommendations in FM Global Loss Prevention Data Sheet 1-29.

3.Size: ASTM D 448, Size 3, ranging in size from 1 to 2 inches (25 to 50 mm).

Pavers may be used alone or with aggregate ballast for functional or decorative purposes.

B.Lightweight Roof Pavers: Interlocking, lightweight concrete units; grooved back, with four-way drainage capability; beveled, doweled, or otherwise profiled; and as follows:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1.Manufacturers: Subject to compliance with requirements, [provide products by the following] [provide products by one of the following] [available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following]:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

2.Basis-of-Design Product: Subject to compliance with requirements, provide [product indicated on Drawings] <Insert manufacturer's name; product name or designation> or comparable product by one of the following:

a.Hanover Architectural Products.

b.Rapid Building Systems.

c.Roofblok Limited.

d.Westile Roofing Products.

e.<Insert manufacturer's name>.

Coordinate size selection in "Size" Subparagraph below with minimum paver coverage required, especially at corners, perimeter, penetrations, and above large wall openings. Paver sizes vary among manufacturers and include 8 by 16, 12 by 12, 12 by 16-1/2, and 12 by 18 inches (200 by 400, 300 by 300, 300 by 420, and 300 by 450 mm).

3.Size: <Insert actual size(s) of pavers>.

Insert weight of roof paver in "Weight" Subparagraph below. SPRI identifies interlocking, lightweight roof pavers as weighing at least 10 lb/sq. ft. (50 kg/sq. m) but not exceeding 18 lb/sq. ft. (90 kg/sq. m). Verify availability with manufacturers.

4.Weight: <Insert weight or weight range>.

Retain one of two options in "Compressive Strength" Subparagraph below.

5.Compressive Strength: [2500 psi (17 MPa)] [5000 psi (34 MPa)] <Insert value>, minimum.

Retain one of three options in "Colors and Textures" Subparagraph below. If retaining first option, indicate colors and textures in a separate schedule.

6.Colors and Textures: [As indicated by manufacturer's designations] [Match Architect's samples] [As selected by Architect from manufacturer's full range].

C.Heavyweight Roof Pavers: Heavyweight, hydraulically pressed concrete units, [square edged] [with top edges beveled 3/16 inch (5 mm)], factory cast for use as roof pavers; absorption not greater than 5 percent, ASTM C 140; no breakage and maximum 1 percent mass loss when tested for freeze-thaw resistance, ASTM C 67; and as follows:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1.Manufacturers: Subject to compliance with requirements, [provide products by the following] [provide products by one of the following] [available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following]:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

2.Basis-of-Design Product: Subject to compliance with requirements, provide [product indicated on Drawings] <Insert manufacturer's name; product name or designation> or comparable product by one of the following:

a.Hanover Architectural Products.

b.Rapid Building Systems.

c.Roofblok Limited.

d.Sunny Brook Pressed Concrete Co.

e.Wausau Tile Inc.

f.Westile Roofing Products.

g.<Insert manufacturer's name>.

Coordinate size selection in "Size" Subparagraph below with minimum paver coverage required, especially at corners, perimeter, penetrations, and above large wall openings. Consider handling of pavers as weight increases. Paver sizes vary among manufacturers and include 12 by 12 and 18 by 18 inches (300 by 300 and 450 by 450 mm).

3.Size: [24 by 24 inches (600 by 600 mm)] <Insert dimensions>. Manufacture pavers to dimensional tolerances of plus or minus 1/16 inch (1.6 mm) in length, height, and thickness.

Retain one of two options in "Weight" Subparagraph below. SPRI RP-4 allows roof pavers weighing 18 lb/sq. ft. (90 kg/sq. m) for System 1 at all locations and for System 2 at field of roof. Pavers weighing 22 lb/sq. ft. (110 kg/sq. m) are required for System 2 corner and perimeter areas and all areas for System 3. Verify availability with manufacturers, and coordinate with size of paver in "Size" Subparagraph above if weight of paver unit is a consideration.

4.Weight: [18 lb/sq. ft. (90 kg/sq. m)] [22 lb/sq. ft. (110 kg/sq. m)] <Insert value>.

Retain one of two options in "Compressive Strength" Subparagraph below.

5.Compressive Strength: [7500 psi (52 MPa)] [6500 psi (45 MPa)] <Insert value>, minimum.

Retain one of three options in "Colors and Textures" Subparagraph below. If retaining first option, indicate colors and textures in a separate schedule.

6.Colors and Textures: [As indicated by manufacturer's designations] [Match Architect's samples] [As selected by Architect from manufacturer's full range].

2.10WALKWAYS

Retain "Flexible Walkways" or "Walkway Roof Pavers" Paragraph below for preformed roof walkway products. Revise to suit other walkway products if required.

A.Flexible Walkways: Factory-formed, nonporous, heavy-duty, solid-rubber, slip-resisting, surface-textured walkway [pads] [or] [rolls], approximately 3/16 inch (5 mm) thick and acceptable to roofing system manufacturer.

Retain "Walkway Roof Pavers" Paragraph below if using heavyweight roof pavers as walkways.

B.Walkway Roof Pavers: Heavyweight, hydraulically pressed concrete units, [square edged] [with top edges beveled 3/16 inch (5 mm)], factory cast for use as roof pavers; absorption not greater than 5 percent, ASTM C 140; no breakage and maximum 1 percent mass loss when tested for freeze-thaw resistance, ASTM C 67; and as follows:

Retain "Manufacturers" Subparagraph and list of manufacturers below to require products from manufacturers listed or a comparable product from other manufacturers.

1.Manufacturers: Subject to compliance with requirements, [provide products by the following] [provide products by one of the following] [available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following]:

Retain "Basis-of-Design Product" Subparagraph and list of manufacturers below to identify a specific product or a comparable product from manufacturers listed. Retain option and delete insert note if manufacturer's name and model number are indicated on Drawings.

2.Basis-of-Design Product: Subject to compliance with requirements, provide [product indicated on Drawings] <Insert manufacturer's name; product name or designation> or comparable product by one of the following:

a.Hanover Architectural Products.

b.Rapid Building Systems.

c.Roofblok Limited.

d.Sunny Brook Pressed Concrete Co.

e.Wausau Tile Inc.

f.Westile Roofing Products.

g.<Insert manufacturer's name>.

Coordinate size selection in "Size" Subparagraph below with minimum paver coverage required, especially at corners, perimeter, penetrations, and above large wall openings. Consider handling of pavers as weight increases. Paver sizes vary among manufacturers and include 12 by 12 and 18 by 18 inches (300 by 300 and 450 by 450 mm).

3.Size: [24 by 24 inches (600 by 600 mm)] <Insert dimensions>. Manufacture pavers to dimensional tolerances of plus or minus 1/16 inch (1.6 mm) in length, height, and thickness.

Retain one of two options in "Weight" Subparagraph below. SPRI RP-4 allows roof pavers weighing 18 lb/sq. ft. (90 kg/sq. m) for System 1 at all locations and for System 2 at field of roof. Pavers weighing 22 lb/sq. ft. (110 kg/sq. m) are required for System 2 corner and perimeter areas and all areas for System 3. Verify availability with manufacturers, and coordinate with size of paver in "Size" Subparagraph above if weight of paver unit is a consideration.

4.Weight: [18 lb/sq. ft. (90 kg/sq. m)] [22 lb/sq. ft. (110 kg/sq. m)] <Insert value>.

Retain one of two options in "Compressive Strength" Subparagraph below.

5.Compressive Strength: [7500 psi (52 MPa)] [6500 psi (45 MPa)] <Insert value>, minimum.

Retain one of three options in "Colors and Textures" Subparagraph below. If retaining first option, indicate colors and textures in a separate schedule.

6.Colors and Textures: [As indicated by manufacturer's designations] [Match Architect's samples] [As selected by Architect from manufacturer's full range].

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