IKO SBS Waterproofing Installation Guidelines

Notice to the Reader: The instructions provided below are reprinted from the manufacturer's own materials which were submitted to the RoofStar Guarantee Program for inclusion in this Manual. The reader is urged to check these against current publications issued by the manufacturer, to ensure accuracy.

Manufacturer: IKO INDUSTRIES LTD.

Contact Address: See Membership List in Section 1.

Product Group: SBS MODIFIED BITUMINOUS WATERPROOFING MEMBRANES

Country of Origin: Canada

Country of Manufacture: Canada, USA, Belgium, France

Year First Installed

B.C.: 1985

Canada: 1985

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1 Description

The main components of the waterproofing systems are the TORCHFLEX and MODIFLEX membranes: tough, flexible, SBS polymer modified bitumen prefabricated sheets, appropriately reinforced and surface-finished for specific applications.

The highest quality raw materials are utilized in a manufacturing process which saturates and coats non-woven glass or polyester fabric with SBS polymer modified bitumen.

The membranes are installed on the job site by hot asphalt or propane torch welding, bonding the adjacent sheets and flashing plies to form an integral roofing / waterproofing system.

1.1 GENERAL

The waterproofing assembly / material information published in the RoofStar Roofing Practices Manual does NOT represent a complete set of the manufacturer's published data, nor does it represent a detailed specification. The preparation of a detailed specification is the responsibility of the design authority.

RANGE OF APPLICATION

.1 For use over roof decks in commercial, institutional, and industrial applications.

.2 As a high performance fully adhered 2 ply membrane system used to waterproof plaza decks, promenades and terraces.

DELIVERY, STORAGE, AND HANDLING

.1 Deliver and store materials in original containers with manufacturer's labels and seals intact.

.2 Store rolls on end with selvage edge up, elevated from contact with ground and moisture, in weatherproof shelters; avoid prolonged exposure of light sensitive materials to sunlight.

.3 Below +5°C (+41°F), store rolls in heated enclosures prior to use; bring only enough for immediate use to the work area.

.4 Store combustible fluids and fuels away from heat and open flame.

SITE CONDITIONS

.1 Slope range: proper and adequate drainage of the deck surface is critical to the long term performance of waterproofing system. IKO recommends a minimum slope of one-quarter (1/4") inch per horizontal foot (12") or 2%.

STANDARDS AND APPROVALS

(For specific membranes or assemblies consult manufacturer.) Canadian General Standards Board: conforms to CGSB 37-GP-56M

MANUFACTURER'S SERVICES

.1 Applicator training: formal courses and field training leading to registration as an IKO installer are available.

.2 Field technicians: are available to advise and assist contractors in installation techniques, production, and quality control.

.3 Specification: a complete specification service and design assistance program is offered.

EQUIPMENT

Torches: use only torches designed for torch-on roofing material.

1.2 MATERIALS

NOTE: Regardless of the materials listed below or anywhere else in these manufacturer's guidelines, only materials accepted for use in the RoofStar Guarantee Program, or accessories associated with those materials, may be used to qualify for a RoofStar Guarantee. To see a list of the manufacturer's products accepted for use in the RoofStar Guarantee Program, click on the link above.

MEMBRANES

Consult the list of Accepted Materials by clicking on the MATERIALS link above.

ANCILLARY PRODUCTS

.1 Asphalt: IKO MODI-MELT SEBS is a premium modified asphalt intended for use with glass felts, modified membranes, insulation and coverboards with slopes of 0:12 to 3:12 (May be suitable for other steep applications. Contact IKO Technical Support). Modi-Melt SEBS is elastic, flexible and strong over a large temperature range. Processed under strict quality control standards IKO's Modi-Melt is a blend of select asphalt and SEBS rubbers which conforms to all requirements of ASTM D6152, and UL55A. Modi-Melt SEBS is UL approved as an asphalt component in built-up roof assemblies.

.2 Overlay Board: IKO ProtectoBoard is composed of a mineral-fortified asphaltic core between two layers of high-strength reinforcing glass fiber mat. ProtectoBoard can be employed as the new substrate for modified bitumen waterproofing. ProtectoBoard can also be applied as a protection board in the waterproofing of bridge and podium decks, vertical walls and parking garages. This product is approved by the Ministry of Transport.

1.3 EXECUTION

LIMITATIONS / CAUTIONS

.1 Apply roofing materials over clean, dry surfaces in accordance with RoofStar Guarantee Standards good roofing practices.

.2 Use only compatible primers and adhesives, mastics, or sealants.

.3 Provide adequate protection against fire, particularly when using propane torch-applied membranes.

.4 Torch base sheets to suitable substrates only. Wood fibreboard and fibrecants are not acceptable.

PREPARATION

.1 Surfaces to receive membranes must be clean, dry, and primed with compatible primer as required.

.2 When waterproofing over concrete decks, stipulations shall be made for: 1) repairs of cracks and deteriorated deck; 2) attachment of loose decking; and 3) replacement of decking that is damaged beyond repair or otherwise unsuitable as a substrate.

.3 All poured-in-place structural concrete decks shall be smooth, level, and free from dirt or contaminants. Concrete curing agents shall be checked for compatibility with roofing materials.

.4 All roof deck ridges, depressions, or irregularities must be levelled prior to the application of the waterproofing system. Grind down ridges or irregularities. Fill depressions with cement grout or other material accepted by the roof deck manufacturer. Cracks greater than one-eight (1/8") inch (3.2mm) in width shall be repaired in accordance with the deck manufacturer's requirements.

ROOF MEMBRANE APPLICATION

.1 Asphalt-adhered: apply asphalt to substrate at a rate of 1.2 to 1.5 kg / m² (25 to 30 lb / square), at minimum 205°C (400°F) and maximum 260°C (500°F) at point of application; mop no further than 1 m (3') ahead of unrolling material; lap sides 75 mm (3") and ends 150 mm (6") unless specified otherwise.

.2 Torch-adhered: torch on to suitable substrates or base sheets; lap sides 75 mm (3") and ends 150 mm (6").

.3 Adhesive-applied: install IKO's adhesives and membranes according to IKO's printed instructions.

.4 Use of cant strips is recommended. Where used, install base to the cant. Where not used, install base ply to the base of vertical surfaces.

.5 Start at low point and, where slopes are 1:15 (3/4" in 12") or less, start at right angles to the slope; on slopes greater than 1:15 (3/4" in 12") install parallel to the slope.

.6 Stagger end laps minimum 300 mm (12").

.7 Install base sheet stripping, starting at the outer edge of parapet, across top face, down inside vertical surface, over base sheet on cant strip (if present), and out a minimum of 150 mm (6") onto "flat" portion of roof, fully bonded throughout (unless specified otherwise); apply base sheet stripping over primed flanges of installed metal accessories.

.8 Install membrane cap sheet parallel to base sheet, with laps of cap sheet being offset a minimum of 300 mm (12") from those of base sheet, using same side and end laps as base sheet; embed granules (do not remove) prior to bonding onto granular surfaces.

.9 Limit asphalt / bitumen "bleed-out" at laps on granular surfaces to a maximum of 10 mm (3/8") width.

.10 Extend cap sheet stripping a minimum of 150 mm (6") onto "flat" portion of roof.

.11 Check laps with round-nosed roofing trowel as work proceeds; reseal unbonded areas and voids; repair punctures or tears with patches of similar materials torch-welded to surface.

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