Materials:Paraboard HD Pro (Siplast)

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Materials:Paraboard HD Pro (Siplast)

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Division C - Accepted Materials

Paraboard HD Pro (Siplast)
by Siplast, Inc. (A Division of GAF Materials Canada ULC)

Material Acceptance and Product Details


The information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications, nor is this material recommended or endorsed by the Guarantor. The preparation of a detailed specification is the responsibility of the Design Authority.

Manufacturer
https://www.siplast.com/ Siplast, Inc. (A Division of GAF Materials Canada ULC)
Accepted for the RoofStar Guarantee Program
June 11, 2026
Accepted for application in
Waterproofing Roof Systems
Grade-level Waterproofing Systems
Acceptance Criteria
None (See Section 9.2. in the RGC Standard for Hot Fluid-applied Rubberized Asphalt)
Product Summary
Paraboard™ HD Pro is a factory-laminated panel designed for use as the coverboard and base sheet layer of a multi-ply modified bitumen roofing system. Paraboard™ HD Pro consists of a polyester reinforced SBS-modified bitumen base sheet (Paradiene 20 PR) coated with a proprietary Syntan® acrylic coating factory-laminated to a high-density, closed-cell polyisocyanurate insulation board. The Syntan® coated surface, in place of a silica parting agent, is formulated for use with liquid-applied and self-adhered cap sheets.
(adapted from the Technical Data Sheet).
Conditions and Limitations
See possible slope limitations listed on the downloadable Technical Data Sheet.
Technical Data Sheet
Click the "PDF" icon to open the TDS in a new window.
Technical Data Sheet


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No reproduction of this material, in whole or in part, is lawful without the expressed permission of the RCABC Guarantee Corp.

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