A high-performance, dual-layer waterproofing system designed to protect foundations and below grade structures from water ingress.
Advanced Dual-Layer Protection
Our Below Ground Bentonite system is a multi-layer sheet membrane solution that combines the natural self-sealing power of bentonite with the durability of a high-density polyethylene (HDPE) protection layer. Bentonite expands up to 8 times its original thickness, forming a watertight barrier that works in tandem with the HDPE to stop water at multiple levels. This provides lasting protection for horizontal, vertical, and lagging applications, making it one of the most reliable waterproofing methods available for below ground construction.
Why Choose Bentonite Waterproofing?
Engineered for demanding below ground conditions, Bentonite waterproofing ensures unmatched protection, faster installation, and proven durability.
Key Benefits:
Blindside applications & backfilled walls
Suitable for damp and green concrete
Below-slab on ground installations
Resistant to chemicals & groundwater pressure
High strength with puncture resistance
Dual-layer redundancy for maximum security
Quick installation — as soon as 24 hours after concrete formwork removal
Self-healing bentonite expands up to 8x to block leaks
Robust HDPE layer safeguards against damage from trades or backfill
Common Applications:
Elevator pits
Retaining walls
Below-grade waterproofing
Tunnels and civil structures
Below footing slabs
Choose Bentonite Waterproofing with Confidence
Backed by over 35 years of expertise, our team ensures every below ground project is delivered with maximum reliability, durability, and peace of mind.