Membranes

Sarnafil G476 Membrane

The Sarnafil G476 waterproofing membrane is a specially formulated fiberglass reinforced thermoplastic sheet specially compounded to remain watertight in sub-grade environments, such as under plaza decks, green roofs, planters, parking garages and balconies.  G476 is designed to withstand the rigors of constant dampness, high alkalinity, exposure to plant roots, fungi, and bacterial organisms, as well as varying levels of hydrostatic pressure.

Sarnafil G476 SA Membrane

The Sarnafil G476 SA waterproofing membrane is a robust 120-mil (3 mm) thick composite sheet composed of 60-mil (1.5 mm) thick G476 waterproofing membrane and a 60-mil (1.5 mm) closed cell foam backing layer coated with a pressure sensitive adhesive.

The flexible foam backing layer conforms around minor irregularities in the substrate and provides a cushion for the waterproofing membrane. It also acts as a barrier to protect the G476 membrane from existing substrate contaminants such as asphalt.