Materials:Perma-Board

Notice to the Reader: The roofing assembly / material information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Manufacturer: Hal Industries Inc. Accepted for RoofStar Guarantee Program November 29, 1996 Product Summary PERMA-BOARD is a semi-rigid waterproof sheet with a rubberized asphalt core sandwiched within two layers of fibreglass reinforcement. Available with a smooth poly film surface finish or a sanded finish. PERMA-BOARD is compatible with all asphalt roofing systems and is unaffected by moisture and will not rot. PERMA-BOARD Asphalt Base Board / Overlay Uses: PERMA-BOARD is designed to be used as an overlay to insulation and as a base for modified, built-up and single ply membranes. Elastomeric roofing membranes or built-up roofing may be heat welded or hot mopped directly to PERMA-BOARD, creating a thick waterproofing layer. The asphalt board becomes an integral part of the roof membrane making it stronger and more puncture resistant than it would otherwise be. Performance Properties: Tensile Strength @ 23°C 590 N / 25 mm (135 lb. / in.) Puncture Strength @ 23°C > 450 N / 1 cm. sq. Softening Point Temperature 105°C (221°F) Maximum Water Absorption 0.5% Physical Properties: Dimensions 1 m x 2 m (40" x 80" nominal size) Thickness 4.5 mm (3/16") nominal Weight 10.4 Kg (23 lb.) Per sheet nominal Reinforcement Two plies, fibreglass mat

Click below for the Technical Data Sheet.

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