DELIVERY, STORAGE AND HANDLING
Delivery and Acceptance Requirements:
Deliver materials in manufacturer’s original, unopened containers with manufacturer’s labels intact and legible.
Carefully unload in a manner to prevent damage.
Storage and Handling Requirements:
Refer to Product MSDS for precautionary measures during storage and handling.
Keep pail goods and membrane materials dry, stored in rolls standing on end, selvage edge up, elevated from contact with moisture, at temperatures not less than 5°C (42°F) or more than 49°C (120°F) and pre-conditioned before installation. Handle rolls with care to avoid crushing, puncturing or other damage. Ensure selvage edge is not damaged during handling and banding strips are removed before application of membrane. Do not use wet or damp membrane or flattened rolls.
Protect materials from damage by elements, weather and other activities on raised platforms and covered with breathable tarpaulins.
Ensure pail-goods have tight fitting lids when not in use. Store on end in up-right position.
Ensure materials stored on roof stay within designated live load limits of roof construction. Provide ample bases under equipment and materials to distribute weight to conform to these live load limits. Do not store materials on, or transport materials across, completed roof areas.
Do not expose insulation [and roof sheathing] to wet weather. Store and handle insulation to prevent broken edges and corners, punctures, indentations or other damage. Remove damaged insulation from site.
Ensure bitumen delivered in form of cartons has manufacturer's material identification labels intact on each carton; if in form of bulk tanker delivery, each shipment to be accompanied by written certificate from manufacturer confirming material identification including following:
Softening Point as per CSA A123.4.
Minimum FP per ASTM D92.
EVT.
FBT.
Do not intermix different types or grades of bitumen in bulk shipments.
Protect sheet metal materials from bending and scratching.
Store adhesive, emulsion based waterproofing mastics, sealants and primers between 15°C and 26°C (59°F and 79°F), or restore to temperature ranges before use.
Store materials at site within temporary sheds or trailers; such facilities must be well sealed and kept at least 3°C (5°F) warmer than exterior ambient temperature to ensure materials remain dry in terms of roofing. Do not use wet, damp, frozen or damaged materials. Stack rolls of felt on end.
Do not store more than 1 day's supply of materials on roof at any time. On roof, stack materials on pallets and completely cover with incombustible waterproof tarpaulin whenever work is interrupted, or when there is precipitation of any kind. Securely tie covering to pallets in such way as to be weather tight. Plastic covers and shrink-wrap covers by manufacturers are not acceptable for site storage and be removed upon delivery to roof.
Store combustible materials away from heat and open flames. Protect and store materials in dry, ventilated area away from welding flame, spark and from elements or harmful substance.
Do not lift rigid insulation in slings which will damage edges. Remove damaged insulation and replace with new material at no cost to Owner.
SITE CONDITIONS
Ambient Conditions: Do not apply roof system during inclement weather or when ambient temperatures are expected to be below -5°C (23°F). For temperatures below this practice cold weather application techniques as recommended by membrane manufacturer.
Use following article for repairs, additions or installation of new mechanical equipment on existing roof. Delete if not applicable.
Existing Conditions:
Modifications are to take place on existing adjacent roof areas as part of work of this Section. Do no use existing roof areas as storage, except to extent required for removal, alteration and replacement of work.
Existing roofing is covered by roofing warranty. Obtain from Consultant necessary information regarding such warranty and notify manufacturer of existing roof by letter before work is commenced on existing roof.
Execute alteration work in manner to maintain existing warranty.
Provide temporary protection of existing roof while existing construction is open.
WARRANTY
IKO Limited Labour and Membrane Warranty:
Warrant work of this Section for a period of 5 years against roof leaks as a result of material defects in accordance with General Conditions of the Contract. Promptly correct any defects or deficiencies which become apparent within warranty period, to satisfaction of Consultant and at no expense to Owner. Defects include but are not limited to; leaking, buckling, opening of seams, bond failure and extensive colour fading.
In addition to above, provide to Owner a written warranty covering defects of workmanship for a period of 2 years commencing from date of Substantial Performance of the Work and agree to Make Good promptly any defects which occur or become apparent within warranty period in conjunction with membrane manufacturer’s warranty. Ensure warranty is on either CRCA’s or OIRCA’s “Standard Form of Warranty”.
PRODUCTS
MANUFACTURERS
Manufacturer List: Products of following manufacturers are acceptable subject to conformance to requirements of Drawings, Schedules and Specifications:
IKO Industries Ltd.; www.iko.com
Lexsuco Canada; www.lexcor.net
Tru-Fast; www.trufast.com
Substitution Limitations: This Specification is based on IKO’s Fast-N-Weld SBS Modified Bituminous Membrane Roofing mechanically fastened/heat welded system. No further substitutions will be permitted.
SYSTEMS
Description:
A 2 ply SBS modified bitumen roof membrane using a mechanically fastened base sheet and heat welded granulated cap sheet over coverboard (optional), polyisocyanurate insulation and vapour retarder.
Design roofing membrane system and base flashings to be watertight, does not permit passage of water through finished roof system and resists exposure to weather without failure.
Regulatory Requirements:
External Fire Resistance: Design roofing system to meet minimum Class [A] [B] [C] in accordance with CAN/ULC-S107 for surface burning test method.
Internal Fire Resistance: Design roofing system to comply with CAN/ULC-S126, standard test method for fire spread under metal roof deck assemblies.
Compliance with Local, Provincial and Federal Building Codes: Ensure roofing system complies with authorities having jurisdiction over construction covered within scope of this Specification.
Following paragraphs are for LEED® projects only. Delete if not required.
Sustainability Characteristics:
Applicable LEED® Credits: This Section contains items that must meet performance requirements of following LEED® Categories and Credits:
Materials & Resources (MR):
MR Credit 5 – Regional Materials.
MR Credit 7 – Certified Wood.
Indoor Environmental Quality (EQ):
EQ Credit 4.1 – Low-Emitting Materials: Adhesives & Sealants.
EQ Credit 4.4 – Low-Emitting Materials: Composite Wood and Laminate Adhesives.
Use following in connection with LEED® Credit MR 7.
LEED® Performance Criteria, Credit MR 7: Provide wood-based materials and Products produced from wood obtained from forests certified in accordance with FSC’s Principles.
Use following in connection with LEED® Credit EQ 4.1.
LEED® Performance Criteria, Credit EQ 4.1: Provide adhesives and sealants with VOC content limits lower than stated in the State of California’s SCAQMD Rule #1168, current edition. Refer to Section 01 81 19 for partial list of VOC limits.
Use following in connection with LEED® Credit EQ 4.4.
LEED® Performance Criteria, Credit EQ 4.4: Do not use composite wood and laminate adhesives containing urea-formaldehyde.
Performance/Design Criteria:
Material Compatibility: Components of roof system to be compatible with adjoining materials under application and service as demonstrated by roofing manufacturer and based on testing and field experience.
Metal Deck Roof System: Provide 2 ply SBS modified bituminous mechanically fastened/heat welded on membrane roofing system over metal deck, including but not limited to following:
Metal deck (by others).
Vapour retarder directly over metal deck
Base rigid insulation board.
Tapered insulation.
Coverboard (optional).
Base sheet membrane (mechanically fastened).
Cap sheet membrane (heat welded).
Base sheet flashing.
Heat welded cap sheet flashing.
Accessories:
Metal flashing.
Roof walkways.
Perimeter precast pavers.
Materials:
Lumber, Nailers and Blocking:
#2 grade or better plank. Pressure treated lumber to CSA O80.1-M with CCA to AWPA P-5. Asphalt treated creosote impregnated lumber will not be accepted. Piping of lumber not permitted.
Seal cut ends of lumber with Coppers Napthenate preservative to CSA O80.1-M.
Vapour Retarder: 2 plies Kraft laminated paper, glass edge reinforced with asphalt filler, in compliance with CAN/CGSB-51.33-M, Type 2. Provide “Armourgard Vapour Retardant” Or self-adhering membrane composed of modified SBS asphalt with a top surface of high density cross laminated polyethylene film in compliance with CAN/CGSB-51.34-M, Type 1. Provide “MVP (Modified Vapour Protector)” by IKO Industries Ltd.
Polyisocyanurate Insulation: Closed cell rigid foamed plastic boards conforming to CAN/ULC-S704, Type 2, Class 3, faced with glass reinforced organic felt paper, perforated, maximum board size 1220 mm x 2440 mm (4’- 0” x 8’- 0”) minimum 84 mm (3.3”) thick to furnish a minimum R-Value in accordance with CAN/ULC-S770, LTTR of 20.4. Provide “IKOTherm” by IKO Industries Ltd.
Delete Point 4 below if coverboard is not used.
Coverboard: Asphaltic core board comprised of mineral fortified asphalt sandwiched between a non-woven glass reinforced mat, board size 1220 mm x 1524 mm x 3 mm (4’- 0” x 5’- 0” x 1/8”). Provide “Protectoboard” by IKO Industries Ltd.
SBS Modified Bitumen Base Sheet: SBS modified asphalt base sheet meeting CGSB 37-GP-56M, Type 2, Grade 2, Class P, 180 g/m² (0.6 oz/sq ft) polyester reinforced, thermofusible film on bottom and top surface with double selvage self-adhering side laps. Provide “Fast-N-Stick 180 Base” by IKO Industries Ltd.
Fasteners:
Ensure fasteners compatibility with roof membranes and flashings. Ensure fasteners are of type and size shown on Drawings and acceptable by roofing membrane manufacturer.
Use self-drilling, self-tapping, organic fluoropolymer coated screws for securing of wood nailers and blocking. Screws to pass FM V Class 1 criteria, minimum of 30 cycles in a Kesternich Cabinet. Ensure thread diameter is minimum 6 mm (0.245”) such as “#14 HD” by Tru-Fast.
Ensure nails used to secure metal to wood are galvanized and long enough to penetrate wood by a minimum of 25 mm (1”).
Use self-drilling, self-tapping, organic fluoropolymer coated screws to secure rigid insulation to decking. Screws to pass FM Class 1 criteria, minimum of 30 cycles in a Kesternich Cabinet. Ensure thread diameter is minimum 5.58 mm (0.220”) such as “#12 DP” by Tru-Fast and penetrate decking by a minimum of 25 mm (1”).
Stress plates for Attachment:
75 mm (3”) diameter, galvanized steel or Galvalume, “MP-3” by Tru-Fast; www.trufast.com. (Insulation).
60 mm (2-3/8”) diameter, barbed plate, “SFS Intec Galvalume Steel Round 2-3/8” by SFS Intec; www.sfsintecusa.com. (Base Sheet).
50 mm (2”) diameter, steel barbed plate. OMG Inc.; www.olygast.com. (Base Sheet).
Minimum Screw Size: #12 fasteners. #14 fasteners minimum for FM approved assemblies.
Ensure fasteners are acceptable to membrane manufacturer and be in compliance with fastener standard FM 4470, 1-28 and 1-29.
Select 1 of the following 2 cap sheets.
SBS Modified Bitumen Cap Sheet: SBS modified asphalt cap sheet meeting CGSB 37-GP-56M, Type 2, Grade 2, Class G, 250 g/m² (0.83 oz/sq ft) polyester reinforced, granulated top surface, thermofusible film bottom surface. Granular colour to be selected by Consultant from manufacturer’s samples at a later date. Provide “Torchflex TP-250 CAP” by IKO Industries Ltd.
Fire Rated SBS Modified Bitumen Cap Sheet: SBS modified asphalt cap sheet with additives to achieve Class A fire rating when used with a 1-1/2:12 to 2-1/2:12 roof slope. Provide “Torchflex Prevent TP-250” or “Torchflex Prevent Premium TP-250”
Low VOC Primer for Self-Adhering Base Sheet Flashings: A non-solvent based, 2 part urethane primer specifically formulated to prepare substrates for application of “Armourbond Flash” membrane. Provide “S.A.M. Primer” by IKO Industries Ltd.
Select paragraph above and delete below for projects where VOC limits are a concern. Select paragraph below and delete above for projects where VOC limits are not an issue.
Primer for Self-Adhering Base Sheet Flashings: Quick drying, solvent-based primer “S.A.M Adhesive” by IKO Industries Ltd.
SBS Modified Bitumen Base Flashing: SBS modified asphalt base sheet meeting CGSB 37-GP-56M, Type 2, Grade 2, Class P, 140 g/m² (0.46 oz/sq ft) polyester reinforced, thermofusible film on top and self adhering bottom surface. Provide “ArmourBond Flash” by IKO Industries Ltd.
Select 1 of the following 2 cap sheets.
SBS Modified Bitumen Cap Flashing: SBS modified asphalt cap sheet meeting CGSB 37-GP-56M, Type 2, Grade 2, Class 2, 250 g/m² (0.6 oz/sq ft) polyester reinforced, granulated top surface, thermofusible film bottom surface. Provide “Torchflex TP-250 CAP” by IKO Industries Ltd.
Fire Rated SBS Modified Bitumen Cap Flashing: SBS modified asphalt cap sheet with additives to achieve Class A fire rating when used with a 1-1/2:12 to 2-1/2:12 roof slope. Provide “Torchflex Prevent TP-250” or “Torchflex Prevent Premium TP-250”
Mastics: Asphalt mastic conforming to CGSB 37-GP-9Ma requirements.
Walkways: SBS modified asphalt cap sheet membrane of a different colour from field membrane cap sheet. Provide “Torchflex” or “Modiflex Cap Sheets” by IKO Industries Ltd.
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