SECTION 07 51 13 - BUILT-UP ASPHALT ROOFING
PART 1 - GENERAL
1.1SUMMARY
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A.This system may be ud only after explicit direction from the University to do so.
B.This Section includes 3 ply built up roof with cap sheet.
C.Roofing insulation
D.Walking pads.
1.2DEFINITION
A.Hot Roofing Asphalt: Roofing asphalt heated to its equiviscous temperature, the
temperature at which its viscosity is 125 centipoi for mopping application and 75 centipoi for mechanical application, within a range of plus or minus 25 deg F, measured at the mop cart or mechanical spreader immediately before application.
B.Systems reference the Seventh Edition of the NRCA manual.
1.3SUBMITTALS
A.Product Data: For each product indicated.
B.Shop Drawings: Include plans, elevations, ctions, details, and attachments to other
Work.
C.Samples: For each product included in roofing system.
D.Rearch/evaluation reports.
E.Maintenance data.
1.4QUALITY ASSURANCE
A.Installer Qualifications: A qualified installer, approved by manufacturer to install
manufacturer's products. Installer must be a member in good standing with the NRCA.
蓦怎么读音B.Source Limitations: Obtain components for roofing system from or approved by
roofing system manufacturer.
娃娃鱼养殖C.Fire-Test-Respon Characteristics: Provide roofing materials with the fire-test-
respon characteristics indicated as determined by testing identical products per test method below by UL, FMG, or another testing and inspecting agency acceptable to authorities having jurisdiction.
1.Exterior Fire-Test Exposure: Class B; ASTM E 108, for application and roof
slopes indicated.
D.Preinstallation Conference: Conduct conference at Project site or where directed by
Owner.
1.5WARRANTY
A.Special Warranty: Manufacturer's standard form, without monetary limitation, in which
manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within 15 years from date of Substantial Completion. Failure includes roof leaks.
女孩故事B.Provide two year warranty by the installer for repair work.
PART 2 - PRODUCTS
2.1MANUFACTURERS
A.Manufacturers: Subject to compliance with requirements, provide products by one of
the following:
1.Built-up Asphalt Roofing:
a.Barrett Company.
b.CertainTeed Corporation.
c.Firestone Building Products Company.
d.GAF Materials Corporation.
e.Hickman, W. P. Systems Inc.
f.Johns Manville International, Inc.
g.Malarkey Roofing Company.
h.TAMKO Roofing Products, Inc.
i.Or approved equal
2.2BASE-SHEET MATERIALS
A.Sheathing Paper: Red-rosin type, minimum 3 lb/100 sq. ft..
B.Ba Sheet: ASTM D 4601, Type I, nonperforated, asphalt-impregnated and -coated,
glass-fiber sheet, dusted with fine mineral surfacing on both sides.
C.Ba Sheet: ASTM D 4601, Type II, SBS-modified, asphalt-impregnated and -coated
火灾英文sheet, with glass-fiber-reinforcing mat, dusted with fine mineral surfacing on both sides.
D.Ba Sheet: ASTM D 4897, Type II, venting, nonperforated, heavyweight, asphalt-
impregnated and -coated, glass-fiber ba sheet with coar granular surfacing or embosd venting channels on bottom surface.
2.3ROOFING MEMBRANE PLIES
A.Ply Sheet: ASTM D 2178, Type IV, asphalt-impregnated, glass-fiber felt.
B.Cap Sheet: ASTM D 3909, asphalt-impregnated and -coated, glass-fiber cap sheet, with
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white coar mineral-granule top surfacing and fine mineral surfacing on bottom surface.
2.4FLASHING MATERIALS
A.Backer Sheet: ASTM D 2178, Type IV, asphalt-impregnated, glass-fiber felt.
B.Backer Sheet: ASTM D 4601, Type I, asphalt-impregnated and -coated, glass-fiber什么叫分式
sheet, dusted with fine mineral surfacing on both sides.
C.Flashing Sheet: ASTM D 6163, Type I or II, glass-fiber-reinforced, SBS-modified
asphalt sheet; granular surfaced; suitable for application method specified and as follows:
1.Granule Color: Gray.
2.5ASPHALT MATERIALS
A.Roofing Asphalt: ASTM D 312, Type III or IV as recommended by built-up roofing
system manufacturer for application.
2.6AUXILIARY ROOFING MEMBRANE MATERIALS
A.General: Auxiliary materials recommended by roofing system manufacturer for
intended u and compatible with built-up roofing.
B.Cold-Applied Adhesive: Roofing system manufacturer's standard asphalt-bad, one-
or two-part, asbestos-free, cold-applied adhesive specially formulated for compatibility and u with built-up roofing ba flashings.
C.Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-
resistance provisions in FM 4470; designed for fastening roofing membrane components to substrate; tested by manufacturer for required pullout strength; and acceptable to roofing system manufacturer.
2.7SUBSTRATE BOARDS
A.Substrate Board: ASTM C 1177/C 1177M, glass-mat, water-resistant gypsum
substrate, 1/2 inch thick.
B.Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-
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resistance provisions in FMG 4470, designed for fastening substrate panel to roof deck.
2.8ROOF INSULATION
A.Polyisocyanurate Board Insulation: ASTM C 1289, Type II, felt or glass-fiber mat
facer on both major surfaces.
B.Composite Polyisocyanurate Board Insulation: ASTM C 1289, faced with insulation
board on one major surface, as indicated below by type, and felt or glass-fiber mat facer on the other.
1.Type III (perlite-insulation-board facer), 1/2 inch thick.
C.Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/4
inch per 12 inches, unless otherwi indicated.
D.Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes
where indicated for sloping to drain. Fabricate to slopes indicated.
2.9INSULATION ACCESSORIES
A.Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-
resistance provisions in FMG 4470, designed for fastening roof insulation to substrate, and acceptable to roofing system manufacturer.
B.Cold Fluid-Applied Adhesive: Manufacturer's standard cold fluid-applied adhesive
formulated to adhere roof insulation to substrate.
C.Insulation Cant Strips: ASTM C 728, perlite insulation board.
D.Tapered Edge Strips: ASTM C 728, perlite insulation board.
E.Cover Board: ASTM C 1177/C 1177M, glass-mat, water-resistant gypsum substrate, ½
inch thick
2.10WALKWAYS
A.Walkway Pads: Mineral-granule-surfaced, reinforced asphaltic composition, slip-
resisting pads, manufactured as a traffic pad for foot traffic and acceptable to roofing system manufacturer, 3/4 inch thick, minimum.
1.Pad Size: manufacturer’s standard size appropriate to layout.
B.Cap Sheet Strips: ASTM D 6163, Type I or II, glass-fiber-reinforced, SBS-modified,
asphalt-impregnated and -coated walkway sheet; with white coar mineral-granule top surfacing and fine mineral surfacing on bottom surface.
PART 3 - EXECUTION
3.1SUBSTRATE BOARD INSTALLATION
A.Install substrate board with long joints in continuous straight lines, perpendicular to roof
slopes with end joints staggered between rows. Tightly butt substrate boards together.
1.Fasten substrate board to top flanges of steel deck according to roofing system
manufacturer's written instructions.
3.2INSULATION INSTALLATION
A.Coordinate installing roofing system components so insulation is not expod to
precipitation or left expod at the end of the workday.
B.Comply with roofing system manufacturer's written instructions for installing roof
insulation.
C.Nailer Strips: Mechanically fasten 4-inch nominal- width wood nailer strips of same
thickness as insulation perpendicular to sloped roof deck at the following spacing:
1.16 feet apart for roof slopes greater than 1 inch per 12 inches but less than 3
inches per 12 inches.
2.48 inches apart for roof slopes greater than 3 inches per 12 inches.
D.Install tapered insulation under area of roofing to conform to slopes indicated.
E.Install one or more layers of insulation under area of roofing to achieve required
thickness. Where overall insulation thickness is 1-1/2 inches or greater, install 2 or more layers with joints of each succeeding layer staggered from joints of previous layer
a minimum of 6 inches in each direction.
