Fosroc Proofex ORG / OGP / OFB — Premium TPO/FPA Synthetic Waterproofing Sheet Membrane

The Fosroc Proofex ORG, OGP, and OFB series represents a premium range of synthetic waterproofing sheet membranes made from TPO/FPA (Thermoplastic Polyolefin / Flexible Polypropylene Alloy) — available in loose-laid, mechanically fixed, or fully bonded systems, with all overlaps thermally fused using hot-air welding to create a completely seamless, watertight structure.

Each variant is engineered for a specific installation method and application:

Proofex ORG — A loose-laid, internal glass fleece reinforced TPO membrane for roof waterproofing, podiums, basement waterproofing, and reservoirs. Its dual-colour surface (grey top, black bottom) visually exposes any scratches or punctures during installation — allowing quick spot repairs before backfilling. For waterproofing contractors, that built-in damage indicator alone eliminates one of the most common sources of post-installation failure.

Proofex OGP — A glass matrix reinforced TPO membrane engineered for civil engineering structures, tunnels, and deep basement foundations that demand maximum dimensional stability under sustained hydrostatic pressure and structural load.

Proofex OFB — A fleece-backed TPO membrane designed to be fully bonded directly to substrates using a polyurethane adhesive, with a clean selvedge edge on both sides for a consistent, professional finish on complex or irregular surfaces.

Across all three variants, the shared benefits are equally strong. Hot-air welded overlaps create thermally fused joints that deliver absolute watertightness — outperforming taped or adhesive-joined systems under continuous hydrostatic conditions. The TPO/FPA formulation is highly stable against intense UV, ozone, and extreme weathering — making this a dependable waterproof roof coating for exposed flat roofs and open balconies. It is also Root Penetration Certified, protecting roof gardens, planters, and landscaped podium decks from plant root intrusion.

The eco-friendly credentials are equally serious — zero VOCs, no plasticisers, completely phthalate-free, and safe for drinking-water reservoir contact and green-building compliance. As a waterproofing solution backed by Fosroc's global construction chemical expertise, the Proofex series is built for projects where performance, safety, and long-term structural protection all need to be delivered together.