BUR Guide Specification

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BUR Guide Specification

Intended as a guide for developing office master specifications or preparing project specifications. Edit and amend to suit required purpose.


SECTION 07511
PROJECT NO. (OPTIONAL) BUILT-UP BITUMINOUS ROOFING
PROJECT NAME (OPTIONAL) PAGE 1 OF [ ]


1 PART 1 - GENERAL

1.1 Work Included:
(this clause is optional and, if using, ensure description of work is complete.)
1.2 Related Work:
(reference appropriate sections and ensure list is complete) eg:
.1 Section 06100 Rough Carpentry (Cants, Blocking, etc.)
.2 Section 07311 Asphalt Shingles
.3 Section 07600 Flashing and Sheet Metal
.4 Section 15440 Plumbing (Supply of Roof Drains)
1.3 Quality Assurance:
1.3.1 Workmanship Standards:
.1 Conform to the latest Guarantee Standards of the RGC Guarantee Corp. (RGC), as published in the RCABC Roofing Practices Manual for a five (5) or ten (10) year Guarantee, unless modified by the contract documents to exceed those minimums.
.2 (The owner or the owner's representative should identify applicable code and insurance requirements relating to the roof assembly.)
1.3.2 Independent Inspection: (Preferred Wording)
.1 Perform using an independent inspection company acceptable to RGC, [the owner, and the consultant] namely: (name of Inspection Company).
.2 Perform as required by RGC under the five (5) and ten (10) year Guarantee Program.
.3 Inspection costs for the Guarantee will be paid for directly by owner, and are not included in this contract.
1.3.3 Independent Inspection: (Optional Wording)
.1 Perform using an independent inspection company acceptable to RGC, [the owner, and the consultant] to be assigned by RGC.
.2 Perform as required by RGC under the five (5) and ten (10) year Guarantee Program.
.3 Inspection costs for the Guarantee are included in this contract.

SECTION 07511
PROJECT NO. (OPTIONAL) BUILT-UP BITUMINOUS ROOFING
PROJECT NAME (OPTIONAL) PAGE 2 OF [ ]

1.4 Submittals:
.1 Provide the owner with an “RGC Roofing System Record” upon completion of this contract. (Includes RGC Guarantee, copies of inspection reports, and Roof Maintenance Guide.)
.2 Provide the owner with one set of any required Material Safety Data Sheets (MSDS) prior to commencement of work, for review and posting on job site.
.3 (List other submittal requests here, eg: shop drawings, samples, product literature, etc.).
1.5 Product Delivery, Storage, and Handling: ==
.1 Deliver and store materials in original containers with manufacturer's labels and seals intact.
.2 Store materials elevated from contact with ground and moisture, and protected from weather.
.3 Store roofing felt on end, one pallet high; do not store in a leaning position.
.4 Avoid prolonged exposure of light and heat sensitive materials to sunlight.
.5 Store combustible materials away from heat and open flame.
1.6 Guarantee:
.1 Provide the standard RGC Guarantee Corp. (RGC) five (5) or ten (10) year Guarantee.

2 PART 2 - PRODUCTS

2.1 Roofing Materials:
.1 Standards: conform to the RGC Guarantee Standards and to the appropriate CSA, CGSB, ULC, and ASTM Standards for the materials used in the roofing system specified; materials to be listed in the RGC Accepted Materials List of the RCABC Roofing Practices Manual.
.2 Standards: (optional) conform to the requirement of ULC Design No.[ ]. (The design authority is responsible for identifying applicable code and / or insurance requirements governing material selection.)
.3 Gypsum: (over steel deck as membrane underlay or thermal barrier); minimum [12.7 mm (1/2")] [15.9 mm (5/8")] thick; 1200 mm x 2400 mm (4' x 8') sheets; [standard] [type X] [siliconized with fibreglass facers]; conform to CSA A82.27-M1977.
.4 Gypsum Fasteners: No. 10 flat-head, countersunk, self-tapping screws, Type [A, AB], Philips, [cadmium plated], [19 mm, 25 mm] [3/4", 1"] long, to CSA B35.3-1962.
.5 Vapour Retarder: (The selection of, and the requirement for, the vapour retarder are determined by the design authority.)
.6 Base Sheets: [No. 40 asphalt-coated base sheet conforming to CSA A123.2-M1979]; {a [fibreglass] [organic] felt, saturated and coated on both sides.} (Fibreglass felt asphalt-coated base sheets must be used in conjunction with glass-ply felt (Type IV) and polyester felt built-up roofs).

SECTION 07511
PROJECT NO. (OPTIONAL) BUILT-UP BITUMINOUS ROOFING
PROJECT NAME (OPTIONAL) PAGE 3 OF [ ]

.7 Roofing Felt: [No. 15 asphalt-saturated perforated roofing felt conforming to CSA A123.3-M1979] [asphalt-saturated glass-ply felt conforming to ASTM D2178, Type IV] [180 g / m2 or 250 g / m2 asphalt saturated polyester felt].
.8 Membrane Flashing Cap Sheet: (cant protection) [2.0 mm reinforced SBS modified bituminous granulated cap sheet].
.9 Asphalt: oxidized roofing asphalt conforming to [CSA A123.4-M1979, Type (2,3)] [ASTM D312-78, Type IV (special steep)].
.10 Asphalt Primer: conforming to CGSB 37-GP-9Ma 1983.
.11 Insulation Overlay: accepted overlay board [asphalt-coated one side] [asphalt-coated both sides] or 13 mm (1/2") Perlitic Retro-fit Board conforming to CAN / CGSB 51.10-92.
.12 Filter Fabric: 100% woven polyolefin; proprietary alternatives approved by insulation manufacturer.
.13 Gravel: clean, washed, round or crushed stone; opaque to ultraviolet light; gradations according to RGC Guarantee Standards.
.14 Gravel Ballast: (for Protected Membrane and Modified Protected Membrane Roof Assemblies); clean, washed, round or crushed stone; gradations according to RGC Guarantee Standards.
.15 Insulation Fasteners: [( ) mm] [( )"]; {screws and [plastic] [steel] stress plates} [RGC accepted nails (over wood decks only)].
.16 Roof Coating: [unfilled mineral colloid emulsified asphalt roof coating conforming to CGSB 37-GP-2M 1976] [filled cutback asphalt roof coating conforming to CGSB 37-GP-8Ma 1982] [fibrated mineral colloid emulsified asphalt roof coating conforming to CGSB 37-GP-28M 1977] [aluminum cutback asphalt roof coating conforming to CGSB 37-GP-42M 1977], [Type 1 (non-fibrated, fibrated)] [Type 2 (fibrated)].
.17 Roofing Cement: cutback asphalt plastic cement conforming to CGSB 37-GP-5Ma 1982.
2.2 Roof Insulation:
.1 Glass Fibre: conform to CAN / CGSB-51.31-M84; top surface finished with asphalt-coated kraft paper; ( ) mm [( )"] thick; [RSI ( )] [R ( )]; {tapered to provide 1: ( ) [( )" in 12"] slope, minimum thickness ( ) mm [ ( )"] at drains}.
.2 Extruded Expanded Polystyrene: conform to CAN / ULC-S701-97, Type [2,4]; [shiplapped] [butt] edges; ( ) mm [( )"] thick; [RSI ( )] [R ( )]; {tapered to provided 1: ( ) [( )" in 12"] slope, minimum thickness ( ) mm [( )"] at drains}.
.3 Expanded Polystyrene: conform to CAN / ULC-S701-97, Type [1,2,3,4]; [shiplapped] [butt] edges; ( ) mm [( )"] thick; [RSI ( )] [R ( )]; {tapered to provide 1: ( ) [( )" in 12"] slope, minimum thickness ( ) mm [( )"] at drains}.

SECTION 07511
PROJECT NO. (OPTIONAL) BUILT-UP BITUMINOUS ROOFING
PROJECT NAME (OPTIONAL) PAGE 4 OF [ ]

.4 Polyurethane: conform to {CGSB 51-GP-21M 1978 (unfaced polyurethane), Type [1,2,3], Class [1,2,3]} {CAN / CGSB-51.26-M86 (faced polyurethane), Type [1,2,3,4], Facing [1,2,3,4], Surface Burning Characteristic [a,b]}; [with shiplapped edges] [channel vented]; ( ) mm [( )"] thick; [RSI ( )] [R ( )].
.5 Polyisocyanurate: conform to {CGSB 51-GP-21M 1978 (unfaced polyisocyanurate), Type 4, Class [1,2,3] } {CAN / CGSB-51.26-M86 (faced polyisocyanurate), Type [1,2,3,4], Facing [1,2,3,4], Surface Burning Characteristic [a,b] }; ( ) mm [( )"] thick; [RSI ( )] [R ( )].
.6 Fibreboard: conform to CAN / CSA-A247-M86, Type 1; [shiplapped] [square] edges; ( ) mm [( )"] thick; [RSI ( )] [R ( )].
.7 Perlitic: conform to CAN / CGSB 51.10-92; ( ) mm [( )] thick; [RSI ( )] (R( )].

3 PART 3 - EXECUTION

3.1 Preparation:
.1 Ensure roofing substrate is rigid, dry, smooth, compatible, free of fins and sharp edges, and clean of all debris and foreign matter.
.2 Prior to built-up roofing application, satisfy the RGC Guarantee Standards for substrate preparation.
.3 Ensure all openings, walls, projections through the roof are firmly affixed and cant strips, reglets and nailing strips are in place.
.4 A thermal barrier may be required between the roof deck and some insulations. Building code and insurance requirements to be identified by design authority.
3.2 Primer:
.1 Prime wood, concrete, and metal surfaces to be directly adhered with bituminous membranes; allow to dry.
.2 Consult primer manufacturer for specific application rates.
3.3 Vapour Retarder: (The design authority determines the necessity for, and the placement of the vapour retarder).

SECTION 07511
PROJECT NO. (OPTIONAL) BUILT-UP BITUMINOUS ROOFING
PROJECT NAME (OPTIONAL) PAGE 5 OF [ ]

3.4 Insulation: (under membrane)
.1 Install insulation in moderate contact (without forcing); stagger end joints; provide a smooth surface to accept roof membrane.
.2 Install insulation according to RGC Guarantee Standards over nailable decks.
.3 Embed insulation in [1.0 kg / m2 (20 lb / square)] [1.5 kg / m2 (30 lb / square)] mopping of hot asphalt over non-nailable deck.
.4 Install tapered insulation according to insulation manufacturer's shop drawings.
.5 Install only as much insulation as can be covered with roof membrane on the same day.
.6 Install wood nailing strips on slopes 1:12 (1" in 12") and greater; ensure nailer is flush with insulation surface. (On uninsulated or PMR systems, wood nailers must be flush with deck and are the responsibility of others.)
.7 Install accepted insulation overlay board as an insulation overlay, where required by RGC Guarantee Standards.
3.5 Built-up Roof System Application:
3.5.1 Conform to RGC Guarantee Standards for a five (5) or ten (10) year Guarantee and to the RGC five (5) and ten (10) year built-up roof specification(s) described below:
.1 Uninsulated wood / plywood decks: Specification [5&10-WUO, 5&10-WUG, 5&10-WUP].
.2 Insulated wood / plywood decks: Specification [5&10-WI0, 5&10-WIG, 5&10-WPG, 5&10-WMG, 5&10-WIP, 5&10-WPP, 5&10-WMP].
.3 Uninsulated concrete decks: Specification [5&10-CUO, 5&10-CUG, 5&10-CUP].
.4 Insulated concrete decks: Specification [5&10-CI0, 5&10-CIG, 5&10-CPG, 5&10-CMG, 5&10-CIP, 5&10-CPP, 5&10-CMP].
.5 Uninsulated steel decks: Specification [5&10-SUO, 5&10-SUG, 5&10-SUP].
.6 Insulated steel decks: Specification [5&10-SIO, 5&10-SIG, 5&10-SPG, 5&10-SMG, 5&10-SIP, 5&10-SPP, 5&10-SMP].