Mapelastic HPG is a next-generation, ready-to-use liquid membrane suited for concrete, masonry, cement board and engineer-approved, exterior-grade plywood. It is designed for both commercial and residential use. It can be applied to interior horizontal and vertical surfaces using a trowel or roller, and is a highly flexible acrylic-based membrane. Mapelastic HPG has excellent compatibility with cement-based bonding materials. It can accommodate minor in-plane substrate movement and also can be used as a crack-isolation membrane (when used with MAPEI™s Fiberglass Me sh ). When used with this mesh, Mapelastic HPG is IAPMO-approved and meets ANSI A118.10 standards for use as a shower-pan liner.