Gripset BRW HD self-adhesive HDPE-faced butyl waterproofing sheet membrane roll
Gripset BRW HD self-adhesive HDPE-faced butyl waterproofing sheet membrane roll
Gripset

Gripset BRW HD – HDPE Butyl Sheet Membrane

$489.50 AUD
$489.50 AUD
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Gripset BRW HD is a 1 mm self-adhesive butyl sheet membrane with a high-strength HDPE facing, providing an instant cold-applied waterproof barrier without torching or curing. Designed for subterranean and
  • Forms an instant self-adhesive waterproof seal without torching or membrane cure time.
  • The HDPE face provides dimensional stability with tear, puncture and impact resistance.
  • Class III flexibility and elongation above 300% accommodate vibration, movement and flexing.
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  • Class III membrane with elongation greater than 300%
  • Waterproof and vapour resistant, including continuously ponding water
  • Resistant to vibration, movement, flexing, tearing, puncture and impact
  • Solvent-free, non-bituminous construction with no bleed or yellowing
  • Service temperature from -30°C to 80°C
  • Complies with AS 4858 and AS 4654.1
  • 1. Confirm the substrate is clean, sound, smooth and dry, and remove contaminants, projections and standing water.
  • 2. Fill and level defects, voids and cracks; allow concrete to cure for 28 days and render or screed for 7 days.
  • 3. Prime where required: Gripset GP for porous substrates, Gripset OP for non-porous substrates, or the specified Gripset vapour barrier for green or damp substrates. Suitably prepared clean, sound non-mineral surfaces may not require primer.
  • 4. Set out, cut and re-roll the sheet. On floors, work from the lowest point towards the highest; use a vertical joint pattern on walls.
  • 5. Peel back 100–200 mm of release paper and progressively adhere the membrane while smoothing with a flat trowel, heavy roller or float to remove air and creases.
  • 6. Roll the built-in side sealing strip firmly. At end laps, use Gripset BRW FG Tape, overlap each sheet 25 mm onto the tape and overlap the new roll 300 mm over the existing sheet.
  • 7. Detail corners, wall-to-floor junctions, penetrations, wastes and terminations with the specified BRW tapes and minimum overlaps in the current TDS and BRW Installation Manual.
  • 8. Protect the completed membrane from UV exposure, construction traffic and damage before installing backfill, screed, pedestal systems or other specified finishes.
  • Product: Self-adhesive butyl rubber sheet membrane with HDPE facing
  • Colour: Black HDPE face with black butyl backing
  • Roll size: 1 m × 10 m (10 m² nominal)
  • Thickness: 1 mm
  • Specific weight: 1.55 g/cm³
  • Tensile strength: >3 MPa to AS 4654.1 Appendix A
  • Elongation: >300% to AS 1145.3
  • Classification: Class III
  • Water vapour transmission: 1 g/24 h/m² to ASTM E96 desiccant method
  • Water absorption: 2% to AS 3558.1
  • Service temperature: -30°C to 80°C
  • Standards: AS 4858 PASS; AS 4654.1 PASS
  • Shelf life: Best used within 12 months of purchase when stored correctly
  • Storage: Dry internal area at room temperature; store rolls upright
  • Finish limitation: Protect from UV and traffic; not a direct substrate for tiles, paints or decorative finishes unless correctly capped
  • Warranty: Manufacturing defects and published specifications, subject to the TDS conditions; Australian Consumer Law rights apply
Technical Data Sheet Safety Data Sheet

Complete Your System

System total

Applications

Podium
Terrace
Rooftop
Planter Box
Retaining Wall
Internal Wet Areas
External Waterproofing
Below Ground

Technical Specifications

Key technical properties of this product. Refer to the Technical Data Sheet for complete installation and performance information.

ClassificationClass III
Coverage10 m² nominal sheet area per roll before laps and detailing
Elongation at Break>300% to AS 1145.3
Tensile Strength>3 MPa to AS 4654.1 Appendix A
Full CureInstant waterproof seal; no membrane drying or cure time
Suitable SubstratesConcrete, screed, masonry, compressed fibre cement, structural timber, metals, glazed finishes, ceramics, compatible plastics, PVC and existing epoxy coatings
Internal / External UseInternal and external protected waterproofing; designed principally for subterranean and multi-layer systems
ComplianceAS 4858 PASS; AS 4654.1 PASS
Storage / shelf lifeStore upright in a dry internal area at room temperature; best used within 12 months of purchase
View Technical Data Sheet

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