Delta Amphibia is a BBA-approved, fully bonded 1.3mm pre- and post-applied waterproofing membrane for below-ground and earth-retained structures. Made from a co-extruded, multi-layer system with a hydroreactive, self-sealing core, it is suitable for vertical and horizontal applications in new construction.

  • Multi-layer waterproofing membrane for underground concrete structures

  • Self-sealing and self-healing core for added protection against water ingress

  • Fully bonded to concrete for total adhesion and no lateral water seepage

  • Flexible and able to bridge cracks in the substrate

  • Immediate mechanical protection after installation

  • Complies with BS 8102:2022 for below ground waterproofing

Applications

  • Basements

  • Foundations

  • Retaining walls

  • Tunnels

  • Lift pits

  • Raft foundations

  • Open basement excavations

  • Construction joints and service penetrations

Dimensions

Thickness: 1.3mm

Roll width: 0.9 / 1.8m

Roll length: 10 / 20m

Roll weight: 12kg (0.9 x 10m) / 47kg (1.8 x 20m)

Performance

Absolute impermeability to water

Self-repairing in the event of puncture

Prevents lateral water seepage

Materials

Co-extruded multi-layer membrane with hydroreactive core and non-woven fabric inner face

Accreditations

BBA approved

Complies with BS 8102:2022

NBS J40 / 130