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Bituthene 3000/ Preprufe

Bituthene® 3000 is a high performance, cold-applied, flexible, preformed factory controlled thickness waterproof membrane combining a special high performance, crosslaminated, HDPE carrier film with a unique self-adhesive rubber bitumen compound.

Waterproof membrane with high hydrostatic head resistance. The high density crosslaminated polythene film provides dimensional stability and puncture resistance. 

Gas resistant to methane, carbon dioxide and radon gas protection in excess of the standard requirements in BRE Reports 211 (radon) and 212 (methane and carbon dioxide). Provides external chemical resistance for effective protection against aggressive environments and ozone attack.

Cold applied with no flame or heating required. Self-adhesive rubberised asphalt, ensuring continuity at overlaps and reinforcements. Unique rubber/bitumen formulation allows healing of small punctures and allows flexibility to accommodate minor settlement and shrinkage movement.

Preprufe® 300R Plus membranes are unique composite sheets comprised of a thick HDPE film, pressure sensitive adhesive and weather resistant protective coating. Designed with Advanced Bond Technology™ and a dual adhesive ZipLap™, Preprufe Plus membranes form a unique, integral bond to poured concrete, preventing both the ingress and lateral migration of water while providing a robust barrier to water, moisture, and gas.

Release liner free and designed for efficient, reliable installation, the Preprufe® Plus ZipLap allows for an adhesive to adhesive bond at seam overlaps and delivers superior performance in harsh conditions without the need for specialised equipment, heat, or power. 

Key Features
  • Durable method of waterproofing below ground walls
  • 20 year product warranty
  • BRANZ Appraisal 
  • Authorised applicators
  • Watertight immediately upon installation
Scope of Use

Bituthene 3000 has been developed for positive long-term, low maintenance waterproofing of construction features such as:

  • Foundations
  • Basements
  • Lift shafts and pits
  • Underslab
  • Elevated or grade level podiums 

Preprufe is a pre-applied waterproofing membrane that bonds integrally to poured concrete for use below slabs or behind basement walls on confined sites.

Limitations on Use

Not suitable for:

  • Bituthene 3000 should not be applied when temperature is below +10° without consultation with the Nuralite representative
  • Must be stored in a dry place protected from rain, sun, heat and cold temperatures
  • Sun exposure of the product may difficult the removal of the polyethylene non-stick film. In service, maximum temperature should be below 50°C
  • Bituthene 3000 should be kept exposed to the sun for the minimum possible time in order to prevent from UV rays damage. It is recommended to cover Bituthene 3000 within a few hours after application.

Preprufe footnotes:

1. Lateral water migration resistance is tested by casting concrete against membrane with a hole and subjecting the membrane to hydrostatic head pressure with water. The test measures the resistance of lateral water migration between the concrete and the membrane.

2. Hydrostatic head tests of Preprufe Membranes are performed by casting concrete against the membrane with a lap. Before the concrete cures, a 3mm spacer is inserted perpendicular to the membrane to create a gap. The cured block is placed in a chamber where water is introduced to the membrane surface up to the head indicated

3. Elongation of membrane is run at a rate of 50mm per minute

4. Concrete is cast against the Preprufe membrane and allowed to cure (7 days minimum)

5. Concrete is cast against the protective coating surface of the membrane and allowed to properly dry (7 days minimum). Peel adhesion of membrane to concrete is measured at a rate of 50 mm per minute at room temperature

6. The test is conducted 15 minutes after the lap is formed (per GCP published recommendations) and run at a rate of 50mm per minute at 22°C

In-Service History

As a New Zealand owned and operated company, Nuralite has provided membrane roofing, decking and tanking solutions within the architectural industry for over 50 years.

Other Performance Attributes
  • 20 year product warranty
  • BRANZ Apprasisal 
BRANZ Appraised
BRANZ Appraised
Bituthene 3000 TDS
BRANZ Appraisal: Preprufe and Bituthene

1158 [2021]

Preprufe Environmental Declaration
CAD/PDF Details
Tanking Details

Membrane waterproofing is not hard when combined with Nuralite's range of system solutions and experienced team of technical experts.

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