Waterproofing Guide Specifications (Butyl Membrane Systems)

BUTYL SHEET MEMBRANE (Isobutylene - Isoprene)

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

Part 1 General

1.1 SECTION INCLUDES: .1 Materials and installation for Butyl (IIR) Sheet Membrane waterproofing in a protected membrane (PMR) systems.

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 American Society for Testing and Materials International, (ASTM).

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

.2 ASTM D 6134-07 Vulcanized Rubber Sheet used in Waterproofing Systems

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

.5 Health Canada/Workplace Hazardous Materials Information System (WHMIS)

.1 Material Safety Data Sheets (MSDS).

.6 Underwriters' Laboratories of Canada (ULC)

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

1.3 ACTION AND INFORMATIONAL SUBMITTALS: .1 Provide submittals in accordance with Section [01 33 00 - Submittal Procedures] [___].

.2 Product Data:

.1 Provide manufacturer's printed product literature, specifications and datasheets for [membranes] [insulation] 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].

.3 Provide shop drawings:

.1 Provide drawings stamped and signed by professional engineer registered or licensed in [Province[s]] [Territory[ies]] [___] of [___], Canada.

.2 Indicate [flashing,] [control joints,] [tapered insulation] [penetrations] [field fabricated seams] details.

.4 Test and Evaluation Reports: submit laboratory test reports certifying compliance of [roofing membrane] [___]with specification requirements.

.1 Compatibility of materials: submit written declaration to [Departmental Representative] [Engineer] [Consultant] [___] as described in PART 2, PERFORMANCE CRITERIA.

.5 Manufacturer's Installation Instructions: indicate special precautions required for seaming the membrane.

.6 Sustainable Design Submittals:

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

1.4 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 Inspections: (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].

1.5 DELIVERY, STORAGE AND HANDLING

.1 Deliver, store and handle materials in accordance with [manufacturer's written instructions] [and][Section [01 61 00 - Common Product Requirements] [___]] [___].

.2 Storage and Handling Requirements:

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

.2 Store materials on supports to prevent deformation.

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

.4 Store uncured flashing and jointing materials to prevent premature curing and freezing.

.5 Store insulation protected from [sunlight] [and] [weather] and deleterious materials.

.6 Store roofing materials in accordance with manufacturer's written instructions, to prevent damage or loss of performance.

.3 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.

1.6 FIELD CONDITIONS

.1 Ambient Conditions:

1. Apply Butyl membrane only when surfaces and ambient temperatures are within manufacturers' prescribed limits.

2. Do not install Butyl membrane when air and substrate temperature remains below [5 degrees C] [in accordance with manufacturer's recommendations] or when wind chill gives equivalent cooling effect.

3. Install Butyl membrane on dry substrate, free of snow and ice. Use only dry materials and apply only during weather that will not introduce moisture into system.

1.7 GUARANTEE and WARRANTY: .1 For Work of this Section [07 53 23] - Butyl Sheet Waterproofing] Provide the RCABC Guarantee Corp. (RGC) Standard Five [5] year Waterproofing Guarantee.; .2 Provide Membrane Manufacturer [material warranty] for [10] [___] years.

Part 2 Products description - Roofing System: .1 Butyl Sheet Waterproofing Membrane): to [ASTM D6134-07] [___] Type 1, Class A, 1.6 mm thick, non-reinforced membrane for use in fully adhered and protected system.

2.1 PERFORMANCE CRITERIA

.1 Compatibility between components of system and adjacent materials is essential.

.1 Provide a written declaration to [Departmental Representative] [Engineer] [Consultant] [___] stating that all materials and components, as assembled in system, meet this requirement.

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

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

.2 Recycled content: [[___] % (Post-Consumer + 1/2 Post-Industrial) in accordance with Section [01 35 21 - LEED Requirements] [___]] [___].

1. Minimum [10] [___] % by weight of recycled material in core of finished product.

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

3. Minimum [50] [___] % by weight of FGD gypsum in core.

4. [Ecolabel certified] [___].

2.3 MEMBRANE: .1 Butyl Sheet Waterproofing Membrane): to [ASTM D6134-07] [___] Type 1, Class A, 1.6 mm thick, non-reinforced membrane for use in fully adhered and protected system.

2.4 POLYSTYRENE INSULATION

.1 [Extruded polystyrene (XPS) insulation]: to [CAN/ULC-S701] [___], Type [2], [3], [4], [___], thickness [[___] mm] [as indicated], [square] [shiplapped] [vented] edges.

.1 Recycled content: [[___] % (Post-Consumer + 1/2 Post-Industrial) in accordance with Section [01 35 21 - LEED Requirements] [___]] [___].

2.5 SEALERS

.1 Sealants: asbestos-free sealant, compatible with systems materials, recommended by system manufacturer [___]. [In accordance with Section [07 92 00 - Joint Sealants] [___]] [___].

.1 Recycled content: [[___] % (Post-Consumer + 1/2 Post-Industrial) in accordance with Section [01 35 21 - LEED Requirements] [___] [___].

.2 [Ecolabel certified] [___].

2.6 FASTENERS: .1 Sheathing to steel deck: No.10 flat head, self tapping, Type S, corrosive resistant screws to [ASTM C1002]

2.7 FILTER FABRIC

.1 UV resistant, black woven polyolefin fabric for installation between insulation and stone ballast in protected membrane system

.1 Fabric to meet recommendation of insulation manufacturer.

.2 Product weight [93.5] [77.9] gm/m².

2.8 BALLAST and WEARING COURSES: .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, ice and snow.

.2 Gravel: to [ASTM D1863] [___], [water-worn gravel], [crushed stone].

.3 Paving slabs: to [CSA A231.1], [[___] x [___] x [___] 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] [___].

.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.

2.9 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.

2.10 PROTECTION MAT: .1 Non woven polypropylene needle punched felt.

2.11 PAVER PEDESTALS: .1 Pedestals and levelling plates made of high density [polyethylene] [polypropylene] [with integral spacer ribs on upper surface].

2.12 ADHESIVES, TAPES AND PRIMERS: .1 Adhesive, tapes and primers, in accordance with manufacturer's recommendations.

2.13 SOURCE QUALITY CONTROL: .1 Provide laboratory test reports certifying compliance of roofing materials with specification requirements as described in PART 1, SUBMITTALS/QUALITY CONTROL.

Part 3 Products description - Waterproofing System: .1 Butyl elastomeric membrane consisting of: [reinforced] [non-reinforced] membrane for use in [protected] [fully adhered] system.; .2 Vulcanized Butyl Rubber Sheet used in Waterproofing Systems conforming to ASTM D 6134-07. Water vapour permeance max, perms m/pasm² - 0.14 (0.0025)

Part 4 Execution

4.1 QUALITY OF WORK

.1 Compliance: comply with manufacturer's written recommendations, including product technical bulletins, handling, storage and installation instructions, and datasheets.

.2 Do examination, preparation and roofing Work in accordance with [Roofing Manufacturer's Specification Manual] [and] [[RCABC Roofing Practices Manual].

4.2 SUBSTRATE EXAMINATION: .1 Verification of Conditions: examine substrates and immediately inform [Departmental Representative] [Engineer] [Consultant] [___] in writing of defects.

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

.1 Substrates are firm, straight, smooth, dry, free of snow, ice or frost, and swept clean of dust and debris.

.2 Curbs have been built.

.3 Drains have been installed at proper elevations relative to finished surfaces.

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

4.3 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:

1. Maintain in good order until completion of Work.

2. Dispose of rain water away from face of building until drains or hoppers installed and connected.

.3 Protect from traffic and damage:

1. Comply with precautions deemed necessary by [Departmental Representative] [Engineer] [Consultant] [___].

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

.5 At end of each day's work or when stoppage occurs due to inclement weather, provide protection for completed Work and materials out of storage.

.6 Seal and ballast exposed edges.

.7 If metal connectors used, treat connectors and decking with rust proofing or galvanization.

4.4 DECK SHEATHING (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 installed to RoofStar guarantee standards E Waterproofing.

.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.

4.5 PROTECTED MEMBRANE WATERPROOFING APPLICATION

.1 Membrane, adhered application:

.1 Position membrane over substrate starting at highest point.

.2 Overlap sheets 100 mm minimum.

.3 Allow membrane to relax for 1/2 hour.

.4 Apply adhesive to membrane and substrate in accordance with manufacturer's written instructions.

.5 Do not apply adhesive to splice area.

.2 Insulation application:

.1 Insulation to be 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.

.3 Flashings:

.1 Install Butyl membrane flashings in accordance with manufacturer's written instructions.

.4 Penetrations:

.1 Install drain pans, vent stack covers and other penetration flashings and seal to membrane in accordance with manufacturer's recommendations and details.

.5 Filter fabric application:

.1 Apply fabric unbonded over installed insulation.

.2 Overlap edges 300 mm minimum.

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

4.6 BALLAST AND PROTECTIVE COVERING: .1 Apply stone ballast, as soon as possible after placement of [fabric] [insulation], at minimum rate of [75] [___] kg/m².; .2 Spread stone ballast to an even thickness over entire area.; .3 Spread additional stone ballast around perimeter for width of 1200 mm to increase ballast weight to [___] kg/m².; .4 Install paving slabs over fabric on paver levelling pads. Allow slight space between slabs to permit drainage of surface water. Shim up as required to obtain smooth surface transition from slab to slab.

4.7 GEOSYNTHETIC DRAINAGE CORES AND GEOCOMPOSITES: .1 Molded (dimpled) or woven plastic grids, a minimum of 9.5 mm (3/8") thick or greater to provide uniform support as well as 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.

4.8 CLEANING

.1 Clean Work in accordance with Section [01 74 11 - Cleaning] [___].

.2 Clean to [Departmental Representative's] [Engineer's] [Consultant's] [___] approval, soiled surfaces, spatters, and damage caused by Work of this Section.

.3 Check drains to ensure cleanliness and proper function, and remove debris, equipment and excess material from site.

.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 Collect, package and store Butyl membrane cut-offs and waste material for recycling, and return to recycler in accordance with Waste Management Plan.

.2 Plan and co-ordinate insulation work to minimize generation waste.

.3 Give preference to suppliers who take back mineral fibre insulation waste for reuse or recycling.

.4 Place used hazardous sealant tubes, adhesive containers and materials defined as hazardous or toxic in designated containers.

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

.6 Ensure emptied containers are sealed and stored safely.

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

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

.9 Unused adhesive, sealant and [___] 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.

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

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

.12 Divert unused gypsum materials from landfill to recycling facility as reviewed by [Departmental Representative] [Engineer] [Consultant] [___].

.13 Divert unused geotextiles from landfill to plastic recycling facility for disposal approved by [Departmental Representative] [Engineer] [Consultant] [___].

.14 Divert wood materials from landfill to [recycling] [reuse] [composting] facility approved by [Departmental Representative] [Engineer] [Consultant] [___].

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