Waterproofing Guide Specifications (2-Ply SBS Membrane Systems)

Intended as a guide for developing office master specifications or preparing specifications.

Edit and amend to suit required purpose.

SECTION 07 13 52

PROJECT NO. (OPTIONAL) Modified Bituminous Sheet Waterproofing

PROJECT NAME (OPTIONAL)

PAGE

[ ] OF [ ]

PART 1 - GENERAL

1.1 SECTION INCLUDES:

.1 Materials and installation for two ply SBS modified bituminous membranes in a protected membrane waterproofing system.

1.2 REFERENCES:

.1 RCABC Guarantee Corp. (RGC)

.1 RCABC Guarantee Corp. RCABC Roofing Practices Manual-[Latest Edition].

.2 RGC Guarantee Standards [E Waterproofing].

.2 ASTM International Inc.

.1 ASTM C1177/C1177M-[01], Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing.

.2 ASTM D41-[05], Standard Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing.

.3 ASTM D6162-[00a], Standard Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using a Combination of Polyester and Glass Fibre Reinforcements.

.4 ASTM D6163-[00e1], Standard Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Glass Fibre Reinforcements.

.5 ASTM D6164-[05], Standard Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Polyester Reinforcements.

.3 Canadian General Standards Board (CGSB)

.1 CGSB 37-GP-9Ma- [83], Primer, Asphalt, Unfilled, for Asphalt Roofing, Dampproofing and Waterproofing.

.2 CGSB 37-GP-56M- [80b(A1985)], Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing.

.4 Canada Green Building Council (CaGBC)

.1 LEED Canada-NC Version 1.0-[2004], LEED (Leadership in Energy and Environmental Design): Green Building Rating System Reference Package for New Construction and Major Renovations.

.2 Rating System Addenda for New Construction and Major Renovations LEED Canada-NC Version 1.0-[Addendum 2007].

.3 LEED Canada-CI Version 1.0-[2007], LEED (Leadership in Energy and Environmental Design): Green Building Rating System Reference Guide for Commercial Interiors.

.4 Canadian Standards Association (CSA International)

.1 CSA-A123.4- [04], Asphalt for Constructing Built-Up Roof Coverings and Waterproofing Systems.

.2 CSA A231.1/A231.2-[06], Precast Concrete Paving Slabs/Precast Concrete Pavers.

.5 Underwriters Laboratories' of Canada (ULC)

.1 CAN/ULC-S701-[05], Standard for Thermal Insulation, Polystyrene, Boards and Pipe Covering.

1.3 ADMINISTRATIVE REQUIREMENTS:

.1 Convene pre-installation meeting [one] [___]week prior to beginning waterproofing Work, with [waterproofing contractor's representative] [___] [and] [Departmental Representative] [Engineer] [Consultant] [Inspector] [___] in accordance with [Section [01 32 16.06 - Construction Progress Schedule - Critical Path Method (CPM)] [___]] [Section [01 32 16.07 - Construction Progress Schedules - Bar (GANTT) Chart] [___]] [___] to:

.2 Verify project requirements.

.3 Review installation and substrate conditions.

.4 Co-ordination with other building subtrades.

.5 Review [manufacturer's] [___] installation instructions and warranty requirements.

1.4 ACTION AND INFORMATIONAL SUBMITTALS

.1 Provide submittals in accordance with Section [01 33 00 - Submittal Procedures] [___].

.2 Provide the owner with an "RGC Waterproofing System Record" upon completion of this contract. Includes an RoofStar Five (5) Year Guarantee, copies of Inspection Reports, Membrane Moisture Survey Report (when specified) and a Maintenance Guide.

.3 Product Data:

.1 Provide [two] [___] copies of most recent technical waterproofing components data sheets describing materials' physical properties and include product characteristics, performance criteria, physical size, finish and limitations.

.2 Provide [two] [___] copies of WHMIS MSDS in accordance with Section [01 35 29.06 - Health and Safety Requirements] [01 35 43 - Environmental Procedures], and indicate VOC content for:

.1 Primers

.2 Asphalt

.3 Sealers

.4 Protection Board

.5 Geosynthetic or Geocomposites Drainage Board

.6 Filter fabric

.3 Test and Evaluation Reports

submit laboratory test reports certifying compliance of [modified bitumen] [and] [membrane] with specification requirements.

.4 Manufacturer's Installation Instructions: indicate special precautions required for installation of the membrane.

.5 Manufacturer's field report: in accordance with Section [01 45 00 - Quality Control] [___].

.6 Reports: indicate procedures followed ambient temperatures and wind velocity during application, [and] [___].

.7 Sustainable Design Submittals:

.1 LEED Submittals: in accordance with [Section 01 35 21 - LEED Requirements]

1.5 QUALITY ASSURANCE

.1 Sustainability Standards Certification:

.1 Recycled Content: [provide listing of recycled content products used, including details of required percentages or recycled content materials and products, showing their costs and percentages of [post-consumer] [and] [post-industrial] content, and total cost of materials for project] [___].

.2 Regional Materials: provide evidence that project incorporates required percentage [10] [20] % of regional materials/products, showing their cost, distance from project to furthest site of extraction or manufacture, and total cost of materials for project.

.2 Workmanship Standards:

.1 Conform to the latest Guarantee Standards of the RCABC Guarantee Roofing Corp. (RGC) as published in the "RGC Roofing Practices Manual" for a five (5) year Waterproofing 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.

.3 Qualification of Workers: Employ skilled applicators approved by membrane manufacturer.

.3 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) year Waterproofing Guarantee Program.

.3 Inspection costs for the Guarantee will be paid for directly by owner, and are not included in this contract.

.4 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) year Waterproofing Guarantee Program.

.3 Inspection costs for this Guarantee are included in this contract.

.5 Membrane Moisture Survey (Scan):

.1 Perform using an independent Moisture Detection company acceptable to RGC, [the owner, and the consultant] namely: (name of Moisture Detection Company). Perform using an independent Moisture Detection company acceptable to [the owner, and the consultant] to be assigned by [the owner, and the consultant or RGC].

1.6 FIRE PROTECTION

.1 Fire Extinguishers:

.1 Maintain one [cartridge operated type] [or] [stored pressure rechargeable type] with [hose and] [___] shut-off nozzle,

.2 ULC labelled for A, B and C class protection.

.3 Size[s] [1.14] [2.25] [4.5] [9] [and] [14] kg [or as indicated] [___] on the work area per torch applicator, within [6] [___] m of torch applicator.

.2 Maintain fire watch for [1] [___] hour after each day's waterproofing operations cease.

1.7 DELIVERY, STORAGE, AND HANDLING

.1 Provide and maintain dry, off-ground weatherproof storage.

.2 Store rolls of membrane in upright position.

.1 Store membrane rolls with selvage edge up.

.3 Remove only in quantities required for same day use.

.4 Place plywood runways over completed Work to enable movement of material and other traffic.

.5 Store sealants at +5 degrees C minimum.

.6 Store insulation protected from [daylight] [and] [weather] [___] and deleterious materials.

.7 Handle waterproofing materials in accordance with manufacturer's written directives, to prevent damage or loss of performance.

.8 Store and manage hazardous materials in accordance with Section [01 35 29.06 - Health and Safety Requirements] [01 35 43 - Environmental Procedures].

.9 Packaging Waste Management: remove for reuse [and return] [by manufacturer] of [pallets] [crates] [paddling] [and] [packaging materials] in accordance with Section [01 74 21 - Construction/Demolition Waste Management and Disposal] [___].

.1 Collect and separate plastic, paper packaging and corrugated cardboard in accordance with Waste Management Plan.

.2 Fold up metal banding, flatten and place in designated area for recycling.

1.8 FIELD CONDITIONS

.1 Ambient Conditions

.1 Do not install waterproofing when temperature remains below -18 degrees C for torch application, or [-5 degrees C] [to manufacturers' recommendations] [___] for mop application.

.2 Minimum temperature for solvent-based adhesive is -5 degrees C.

.3 Install waterproofing on dry deck, free of snow and ice, use only dry materials and apply only during weather that will not introduce moisture into waterproofing system.

1.9 WARRANTY

.1 For Work of this Section [07 13 52 - Modified Bituminous Sheet Waterproofing] Provide the RCABC Guarantee Corp. (RGC) Standard Five (5) year Waterproofing Guarantee.

.2 Provide a Membrane Manufacturer [material warranty] for [10] [___] years.

Part 2 Products

2.1 PERFORMANCE CRITERIA

.1 Waterproofing System: capable of resisting moisture/water head of [___] mm, and preventing moisture migration to interior.

.2 Compatibility between components of waterproofing system is essential. Provide written declaration to [Departmental Representative] [Engineer] [Consultant] [___] stating that materials and components, as assembled in system, meet this requirement.

2.2 DECK PRIMER

.1 Asphalt primer: to [CGSB 37-GP-9Ma] [ASTM D41].

2.3 MEMBRANE

.1 Base sheet: to [CGSB 37-GP-56M] [polyester fibres to ASTM D6164] [glass fibres to ASTM D6163] [combination of polyester and glass fibres to ASTM D6162].

.1 [Styrene-Butadiene-Styrene (SBS) elastomeric polymer] [___] prefabricated sheet, [glass] [polyester] [___] reinforcement, having nominal weight of [180] or equal strength combination [glass] [polyester] reinforcement [___] g/m² and minimum thickness of [2.9] mm^.

.2 Type [1,] [2,] [fully adhered] [___].

.3 Grade [1 - standard service] [heavy duty service].

.4 Top and bottom surfaces:

[polyethylene /polyethylene] [___] [sanded /sanded] [___] .

Strain energy (longitudinal/transversal): [9.0/7.0] [8.1/8.8] [___] kN/m.

Breaking strength (longitudinal/transversal): [17.0/18.0] [17.0/12.5] [___] N/5 cm.

Ultimate elongation (longitudinal/transversal): [60/70] [60/65] [___] %.

Tear resistance: [85] [60] N.

Cold bending at -30 degrees C: no cracking.

Softening point: 110 degrees C.

Static puncture resistance: > [400] [300] [___].

Dimensional Stability: [-0.3] / [0.3] %. [___].

.5 ULC certification: Class [A] [B] [___].

.2 Cap sheet membrane: to [CGSB 37-GP-56M] [polyester fibres to [ASTM D6164] [___]] [combination of polyester and glass fibres to [ASTM 6162] [___], and minimum thickness of [2.9] mm.

.1 [Styrene-Butadiene-Styrene (SBS) elastomeric polymer] prefabricated sheet, [polyester] reinforcement, having nominal weight of [250] [180] [___] g/m².

.2 Type [1,] [2,] [fully adhered] [___].

.3 Class [A-granule surfaced] [___].

Colour for granular surface

[black] [blue] [brown] [green] [grey] [red] [sienna] [___].

.4 Grade [1-standard service] [heavy duty service].

.5 Bottom surface [sanded] [polyethylene] [___].

.6 Cap sheet membrane properties: to [CGSB 37-GP-56M] [___].

.1 Strain energy (longitudinal/transversal): [13.0/10.0] [11.0/11.4] [___] kN/m.

.2 Breaking strength (longitudinal/transversal): [25.0/16.0] [___] kN/m.

.3 Ultimate elongation (longitudinal/transversal): [63/73] [60/65] [___] %.

.4 Tear resistance: [80] [___] N.

.5 Cold bending at -30 degrees C: no cracking.

.6 Softening point: 110 degrees C.

.7 Static puncture resistance: > [400] [370] [___].

.8 Dimensional Stability: [-0.2] / [0.2] %. [___].

.7 ULC certification: Class [A] [B] [___].

2.4 DECK COVERING - STEEL DECK

.1 Gypsum board: ASTM C1177/C1177M-[01], Glass Mat Gypsum Substrate for Use as Sheathing, [12.7] [15.9] mm thick] [thickness as indicated] or Fibre-mat reinforced cement board to ASTM C1325-04 [Non-Asbestos] [9.5] [12.7] mm thick.

.2 EcoLogo certified.

.3 Recycled content:

.1 Contain minimum [10] % by weight of recycled material in core of finished product.

.2 Contain minimum [20] % by weight of FGD gypsum and [5] % by weight of recycled material in core.

2.5 PROTECTION LAYER

.1 Protection Board: [4.5] [6] mm thick asphalt core board with non-woven glass facers, or internal glass fibres reinforcement, as recommended by the membrane manufacturer] [___].

2.6 BITUMEN

.1 Asphalt: to [CSA A123.4] [ASTM D312], Type [2] [3].

2.7 POLYSTYRENE INSULATION

.1 Extruded polystyrene (XPS): to CAN/ULC-S701, Type [4], thickness [[___] mm] [as indicated], [square] [shiplapped] [vented] edges.

.1 EcoLogo certified

.2 Recycled content: [minimum [___] % [recycled material per total weight of single batch] [as average percentage of recycled content for consecutive 12 month period]].

.3 VOC content: [CFC free] [and] [HCFC free] [without ozone depletion potential greater than zero], RSI indicated.

.4 Only polystyrene insulations listed on CGSB Qualified Products List (51 GP Series) are acceptable for use on this project.

2.8 SEALERS

.1 Plastic cement: [asphalt].

.2 Sealing compound: [___], rubber asphalt type.

.3 Sealants: [___]. [Caulking - see Section [07 92 00 - Joint Sealants] [___]] [___].

2.9 FILTER FABRIC

.1 UV resistant, black woven water pervious polyolefin fabric for installation between insulation and stone ballast in protected membrane system. Fabric to meet approval of insulation manufacturer.

.1 Product weight [93.5] [77.9] [___] gm/m².

2.10 OVERBURDENS / BALLAST / WEARING COURSE

.1 [Stone: [19 to 32] [___] mm size, well graded round or crushed stone] [Gravel ballast to ASTM D448, Gradation [57] [___]] opaque, non-porous, washed, free from fines, long splinters, moisture, ice and snow.

.2 Paving slabs: to [CSA A231.1], [[600] [___] x [600] [___] x [50] [___] mm thick] [___] [of sizes indicated] [natural] [exposed aggregate] [integral coloured] [air entrained] precast concrete paving slabs [having non-slip finish with [51] [___] mm plain margin around perimeter] [___].

.3 [Adjustable pavers] [[35] [60-90] [90-150] [___] mm in height,] [___]. Pedestals and levelling plates made of high density [polyethylene] [polypropylene] [with integral spacer ribs on upper surface].

.4 [Unit masonry] brick, tile or stone placed on sand and or gravel beds [compliant with RoofStar guarantee standard E11] require moisture monitoring sensor grid on top of the waterproofing membrane in order to locate breaches in membranes. [Refer to 1.5.5 QUALITY ASSURANCE]

.5 [Solid Wearing Courses] cast-in place concrete protection slabs [split-slab] and asphalt paving wearing courses [inaccessible wearing courses] shall be [compliant with RoofStar guarantee standard E11], incorporate surface score lines [indents]. Score lines shall be straight edged grid patterns [squares, rectangles, diamonds, etc.] to facilitate cutting. Indents shall be spaced at a maximum of [2 metres] apart in any direction.

2.11 GEOSYNTHETIC DRAINAGE CORES AND GEOCOMPOSITES

.1 Molded [dimpled] [woven] plastic grids, a minimum of [9.5 mm (3/8") thick] or greater [CCMC Listing No. _____] shall provide uniform support and traffic-bearing properties for overburdens and wearing courses. Geosynthetic drainage cores and geocomposites with factory laminated filter fabric accepted and listed by RoofStar Guarantee Program.

Part 3 Execution

3.1 QUALITY OF WORK

.1 Do examination, preparation and waterproofing Work in accordance with [Roofing Contractors Association of British Columbia [RCABC Roofing Practices Manual] and [Roofing Manufacturer's Specification Manual], particularly for fire safety precautions, and to Design No. [___].

.2 Do priming for asphalt waterproofing in accordance with [manufacturer's written recommendations] [___].

.3 The interface of the walls and roof assemblies will be fitted with durable rigid material [sheet metal] [plywood] [cement fibre board] providing connection point for continuity of air barrier.

3.2 EXAMINATION OF ROOF DECKS

.1 Verification of Conditions:

.1 Inspect with [Departmental Representative] [Engineer] [Consultant] [Inspector] [___] deck conditions including parapets, construction joints, roof drains, plumbing vents and ventilation outlets to determine readiness to proceed.

.2 Evaluation and Assessment: prior to beginning of work ensure:

.1 Decks are firm, straight, smooth, dry, free of snow, ice or frost, and swept clean of dust and debris. Do not use calcium or salt for ice or snow removal.

.2 Curbs have been built.

.3 Deck drains have been installed at proper elevations relative to finished roof surface.

.4 Plywood and lumber nailer plates have been installed to deck, walls and parapets as indicated.

.3 Do not install waterproofing materials during rain or snowfall.

3.3 PROTECTION OF IN-PLACE CONDITIONS

.1 Cover walls, walks [, sloped roofs] [___] and adjacent work where materials hoisted or used.

.2 Use warning signs and barriers. Maintain in good order until completion of Work.

.3 Clean off drips and smears of bituminous material immediately.

.4 Dispose of rain water off work area and away from face of building until roof drains or hoppers installed and connected.

.5 Protect waterproofing membrane from traffic and damage. Comply with precautions deemed necessary by Departmental Representative] [Engineer] [Consultant] [___].

3.4 PRIMING DECK

.1 Apply deck primer to [deck] [wood] [metal] [concrete] [gypsum board] [cementitious board] [___] waterproofing substrate at the rate [recommended by manufacturer] [2.5 L per 10 m²] [___].

3.5 CANTS

.1 Install [prefabricated] [wood] [fibre] [mineral wool fibre] cants. When and were required by membrane manufacturer installation specifications.

.2 Apply hot bitumen to receiving surface and embed cant firmly by hand.

.3 Angle cut cants to fit tightly on back and bottom where deck to wall angle varies from 90 degrees.

3.6 PROTECTED WATERPROOFING MEMBRANE APPLICATION

.1 Primer:

.1 Apply deck primer to [concrete] [gypsum] [cementious board] deck at rate specified on label.

.2 Base sheet application:

.1 Starting at low point of deck, perpendicular to slope, unroll base sheet, align and reroll from both ends.

.2 Unroll and embed base sheet in uniform coating of asphalt applied at rate of 1.2 kg/m², EVT at point of contact.

.3 Unroll and torch base sheet onto substrate taking care not to burn membrane or its reinforcement [or substrate] [___].

.4 Lap sheets 75 mm for side and 150 mm for end laps.

.5 Application to be free of blisters, wrinkles and fishmouths.

.3 Cap sheet application:

.1 Starting at low point on deck, perpendicular to slope, unroll cap sheet, align and reroll from both ends.

.2 Unroll and embed cap sheet in uniform coating of asphalt applied at rate of 1.2 kg/m², EVT at point of contact.

.3 Unroll and torch cap sheet onto base sheet taking care not to burn membrane or its reinforcement.

.4 Lap sheets 75 mm minimum for side laps and 150 mm minimum for end laps. Offset joints in cap sheet 300 mm from those in base sheet.

.5 Application to be free of blisters, fishmouths and wrinkles.

.6 Do membrane application in accordance with manufacturer's recommendations.

.4 Flashings:

.1 Complete installation of flashing base sheet stripping prior to installing membrane cap sheet.

.2 [Mop] [Torch] [base] [and] [cap] sheet onto substrate in 1 metre wide strips.

.3 Lap flashing base sheet to membrane base sheet minimum 100 mm and seal by mopping, cold adhesive or torch welding.

.4 Lap flashing cap sheet to membrane cap sheet 150 mm and torch weld.

.5 Provide 75 mm side lap and seal.

.6 Properly secure flashings to their support, without sags, blisters, fishmouths or wrinkles.

.7 Do work in accordance with [manufacturer's recommendations] [Section 07 62 00 - Sheet Metal Flashing and Trim].

.5 Deck penetration

.1 Install waterproofing drain pans, vent stack covers and other deck penetration flashings and seal to membrane in accordance [with RoofStar guarantee standards and the manufacturer's recommendations and details] [as indicated][___].

.6 Insulation application:

.1 Place insulation over membrane, [channel cut face down] [___], loose laid in parallel rows with ends staggered.

.2 Where insulation is in contact with cants bevel insulation edges to fit snug to cant slope.

.7 Filter fabric application:

.1 Apply fabric unbonded over installed insulation.

.2 Overlap edges 300 mm minimum.

.3 Cut fabric around roof drains, vents and other penetrations and extend under metal flashings.

3.7 BALLAST AND PROTECTIVE COVERING

.1 Apply stone ballast, dry, as soon as possible after placement of [fabric] [insulation], at minimum rate of [50] [___] kg/m², [following insulation manufacturer's recommendations] [___].

.2 Spread stone ballast to an even thickness over entire roof area.

.3 Spread additional stone ballast around perimeter of roof for width of 1200 mm to increase ballast weight to [100] [___] kg/m².

.4 Install paving slabs over fabric on paver levelling pads.

.1 Allow slight space between slabs to permit drainage of surface water.

.2 Shim up as required to obtain smooth surface transition from slab to slab.

3.8 CLEANING

.1 Remove bituminous markings from finished surfaces.

.2 In areas where finished surfaces are soiled caused by work of this section, consult manufacturer of surfaces for cleaning advice and complying with their [documented] [___] instructions.

.3 Repair or replace defaced or disfigured finishes caused by work of this section.

.4 Waste Management: separate waste materials for [reuse] [and] [recycling] [___] in accordance with Section [01 74 21 - Construction/Demolition Waste Management and Disposal] [01 35 21 - LEED Requirements] [___].

.1 Place materials defined as hazardous or toxic in designated containers.

.2 Clearly label location of salvaged material's storage areas and provide barriers and security devices.

.3 Ensure emptied containers are sealed and stored safely.

.4 Divert unused aggregate materials from landfill to local [quarry] [facility] [___] for reuse as reviewed by [Departmental Representative] [Engineer] [Consultant] [___].

.5 Unused [paint] [coating] [___] material must be disposed of at official hazardous material collections site as reviewed by [Departmental Representative] [Engineer] [Consultant] [___].

.6 Unused adhesive, sealant and [asphalt] [___] materials must not be disposed of into sewer system, into streams, lakes, onto ground or in other location where it will pose health or environmental hazard.

.7 Dispose of unused adhesive material at official hazardous material collections site approved by [Departmental Representative] [Engineer] [Consultant] [___].

.8 Dispose of unused sealant material at official hazardous material collections site approved by [Departmental Representative] [Engineer] [Consultant] [___].

.9 Dispose of unused asphalt material at official hazardous material collections site approved by [Departmental Representative] [Engineer] [Consultant] [___].

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