Designed for underground waterproofing with specific products for horizontal or vertical applications. While suitable for a range of underground waterproofing situations, it provides robust tanking to protect areas against a high risk of hydrostatic water pressure.

Solutions can be provided for buildings of all sizes and requirements including pre-applied loose laid under-slab, pre-applied to vertical walls, external blind side waterproofing or post applied to vertical walls with options for torch-on or self-adhesion.

The product must be installed by a Certified Equus Applicator. Verification of their status can be confirmed by a current applicator certificate or by contacting Equus Industries. Any installation must be done in accordance with the latest specifications and technical documentation, or with written approval by Equus Industries Ltd. 

• B2 Durability — B2.3.1 (a), COLPHENE BSW has a durability of at least 50 years where used underground when installed with the correct specification, installation and maintenance.
• E2 External moisture — E2.3.2, E2.3.3, E2.3.7 Test data, together with in-service history in New Zealand and internationally, of the correctly installed COLPHENE BSW membrane over correctly designed and constructed substrates, show that the membrane successfully resists the ingress of moisture.
• F2 Hazardous building materials — F2.3.1 Well known experience with the type of materials used together with in-service history, show that COLPHENE BSW complies with this performance requirement. Refer to SDS at www.equus.nz 

For full details see BRANZ Appraisal 1037

• 20 year warranty
• 50 year underground durability

The upper surface of the membrane is coated with crystals that specifically adhere to the concrete slab when freshly poured against the membrane. This adhesion with the concrete creates a watertight bond preventing water infiltration to the concrete.