FPO (Flexible Polyolefin) sheet membranes are a high-performance waterproofing solution designed specifically for below-ground applications, including basements, retaining walls, foundation slabs, and underground structures.

Made from a blend of polyolefin compounds, FPO membranes offer excellent chemical resistance, root resistance, and long-term flexibility, making them ideal for harsh below-ground environments. These membranes are homogeneous and environmentally friendly — free from plasticisers, chlorine, and heavy metals.

FPO sheets are typically installed by heat-welding the seams, creating a fully bonded, watertight system that resists groundwater pressure and prevents lateral water migration. Their dimensional stability and durability make them especially suitable for critical waterproofing zones and complex foundation details.

Whether installed loose-laid under slab, fully bonded to walls, or as part of a dual-system approach, FPO membranes offer reliable, long-term protection for structures where water ingress is not an option.