HDPE Pre-Applied Waterproofing Membrane
TREMproof FBM Plus is a high-performance, pre-applied waterproofing membrane composed of a robust high-density polyethylene (HDPE) film, a high-tack pressure-sensitive adhesive and a weather-resistant protective coating. The membrane is designed to form a continuous and integral bond with freshly placed concrete, creating a durable barrier that resists water ingress. It also provides protection against moisture and ground gases, including methane and radon, while preventing lateral migration.
TREMproof FBM Plus is release-liner free for efficient installation and incorporates dual adhesive seam technology that bonds adhesive-to-adhesive at overlaps. This feature delivers watertight joints and dependable performance in demanding site conditions without the need for specialised tools, heat, or power. Environmental performance supported by third-party verified EPD in accordance with EN 15804.
Usage/Purpose
TREMproof FBM Plus is designed for below-grade waterproofing in demanding civil, industrial and infrastructure projects, including:
- Structural slabs and retaining walls of basements.
- Underground structures such as utility tunnels, transportation tunnels and mined or open-cut subway constructions.
- High-specification infrastructure areas and mission-critical facilities such as data centres.
- Underground spaces, integrated pipe galleries and other below-grade structures.
Features & Benefits
- Forms an integral bond with concrete, verified through adhesion testing to concrete substrates
- Prevents lateral water migration, with no lateral movement observed under hydrostatic pressure testing.
- High tensile strength, elongation and puncture resistance confirmed through independent testing.
- Manufactured without harmful chemicals; environmentally friendly, energy-efficient and compliant with green building requirements.
- Fast and simple installation by loose-lay method with cold-applied self-adhesive overlap seams; requires no heat or special tools.
- Dual adhesive seam system providing continuous watertight bond; overlap system demonstrated resistance to hydrostatic pressure.
- Suitable for installation in a range of site conditions, including wet substrates and low temperatures (subject to installation limits).
- Resistant to hydrostatic pressure – no leakage observed under high-pressure testing (up to 7 bar).
- Watertight under sustained pressure exposure conditions.
- Provides resistance to ground gases including methane and radon.
- Resistant to chemical exposure including salts and sulphates typically found in soils.
