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Equus Soprema Colphene BSW Tanking Membrane
Description

Equus Soprema Colphene BSW Tanking system is a fully reinforced membrane system designed for underground, below slab horizontal, and vertical external blind side waterproofing applications. With its unique design, it can be used in high density areas near buildings that limit access and excavation.

Colphene membranes are high-performance waterproofing membranes composed of reinforced, SBS modified bitumen. The upper surface 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.

The complete system includes swellable waterstops, and a drainage and protection layer laid between the membrane and the earth. This provides an extra layer of protection, extending the life of the membrane. Horizontal or vertical insulation can also be added to the system for increased thermal efficiency to the building.

Key Features
  • Adheres to reinforced concrete floor slab with specifically designed crystal surface and resists soil settlement and dimensional movements
  • Light-weight membrane for wall waterproofing
  • High hydrostatic pressure resistance
  • Does not rely on pressure or curing
  • Quick horizontal installation time
  • Heat welded, watertight laps with DUO SELVEDGE
  • 50 year underground durability
  • 20 year material warranty
  • BRANZ Approved system.
Scope of Use

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.

 

Limitations on Use

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. 

Statement of Building Code Compliance
  • 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

Other Performance Attributes
  • 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.

Documents
Product Statement: Equus Soprema BSW Tanking System

2025

Equus Document Library
BRANZ Appraisal

2023

Equus Industries Ltd provide technical waterproofing, tanking, coating and flooring solutions for architects, engineers, property managers and contractors in the building industry.

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