Repair Systems — 01
Heat-welded and cold-applied self-adhered sheet membranes
Technical product reference for heat-welded and cold-applied self-adhered sheet membranes used in balcony and terrace waterproofing remediation. Covers system classification, product selection, application method comparisons, and brand references for Australian Class 2 strata buildings.
What are cold-applied sheet membranes?
Cold-applied sheet membranes are pre-formed waterproofing sheets installed without an open flame — self-adhesive bitumen/butyl sheets, heat-welded polypropylene-lined undertile sheets, loose-laid butyl single-layer membranes, and multi-layer base sheets. They suit heat-sensitive substrates (insulation, timber) and offer a consistent factory-controlled thickness. Selection turns on the sheet type and duty (undertile vs exposed vs subterranean vs base sheet), thickness, facing (fabric vs HDPE), seam/lap method, and the Class 2 (NCC) test evidence to AS 4858 / AS 4654.
Class 2 (NCC) — balconies, roofs & podiums: specify only a sheet with current Australian test certification (see the “Class 2 / NCC tested” field on each card). A product with no value is unverified — not a substitute for a certified system.
Product Reference
Individual products — one card each — scroll to view all
ARDEX Australia
ARDEX WPM 1000
Heat-welded undertile sheet membrane (polypropylene-lined)
ARDEX WPM 1000 is a 1.2 mm polypropylene-lined (butynol-type) undertile sheet waterproofing membrane with heat-welded laps and seams, for direct adhesion of tiles, pavers and decking over non-exposed balconies, terraces and podiums. Tested by BRANZ to AS 4858 and AS 4654 and by Bureau Veritas to AS 2904 (flashing). Supplied 1.4 m × 20 m (≈35 kg) rolls.
ARDEX Australia
ARDEX WPM 117
Self-adhesive SBS modified-bitumen sheet (cold, no flame)
ARDEX WPM 117 is a 2.0 mm self-adhesive SBS-reinforced modified-bitumen sheet membrane applied cold (no open flame) — suited to heat-sensitive substrates (insulation, timber) — for horizontal and vertical use within multi-layer waterproofing systems. Tested by BRANZ to AS 4654.1. Supplied 1 m × 15 m (≈30 kg) rolls.
Gripset Industries
Gripset BRW-PFN
Self-adhesive butyl rubber sheet — fabric-faced (takes finishes)
Gripset BRW-PFN is a 1.0 mm self-adhesive butyl rubber sheet membrane with a high-strength needle-punched fabric facing that supports the direct application of surface finishes, for waterproofing internal and external areas. The product page states compliance to AS 4858 and AS 4654.1; a named independent test report was not cited on the page.
Gripset Industries
Gripset BRW-HD
Self-adhesive butyl rubber sheet — HDPE-faced (subterranean)
Gripset BRW-HD is a self-adhesive butyl rubber sheet membrane with a laminated high-strength HDPE film facing, designed for subterranean waterproofing and multi-layered sheet membrane applications. The product page states it passes AS 4858 and AS 4654.1 and is Class III; a named independent test report was not cited on the page.
ARDEX Australia
ARDEX WPM 116 Fibre-Backed Base Sheet
APP modified-bitumen base sheet (multi-layer)
ARDEX WPM 116 (Shelterbit fibre-backed base sheet) is an APP (atactic polypropylene) plastomeric modified-bitumen base sheet reinforced with fibreglass and non-woven polyester, installed as the base layer in multilayer waterproofing systems. Designed for heat-sensitive substrates (timber, insulation) and rough/uneven surfaces, and for overlay of sound existing membranes. Loose-laid, mechanically fastened, adhered with ARDEX WA 98, or laid in hot-melt bitumen.
ARDEX Australia
ARDEX Butynol
Butyl rubber (Butynol) sheet — exposed, loose-laid single layer
ARDEX Butynol is a butyl-rubber single-layer waterproofing sheet for horizontal and vertical use — UV-exposed decks, roofs and gutters, and tanking under floor slabs or behind masonry walls. Available 1.0 / 1.5 / 2.25 mm black and 1.2 mm dove grey. Loose-laid with laps bonded using ARDEX WPM 299 seam primer and seam tape. BRANZ tested to AS 4654.1 (per thickness) and AS/NZS 4020 potable-water compliant.
System Comparison
Cold-applied sheet membranes — confirm all selections against the current manufacturer TDS before specifying.
Scroll the table sideways to see every column →
Do not confuse heat-welded and cold-applied sheet membranes with:
- Torch-on bitumen membranes (WPM 150, WPM 185, Soprema Sopralene Flam, TREMproof Torch 3000) — these require open-flame gas torch application and are listed on the torch-on sheet membrane page
- Liquid polyurethane or acrylic membranes — roller or brush-applied liquid systems, not sheet products
- Cementitious flexible membranes — cement-based two-part systems such as ARDEX 8+9 or Mapei Mapelastic Foundation
- Crystalline waterproofing — penetrating admixture systems, not membrane-forming
- Trafficable exposed coating systems — surface coatings without a classified membrane specification beneath
Disclaimer
This page provides general technical information only. Final product selection must be confirmed against the current manufacturer technical data sheet, project specification, substrate condition, exposure level, drainage, required finish, NCC requirements, AS 4654 and AS 4858 requirements where applicable, and applicator warranty conditions. Do not rely on this reference as a substitute for professional engineering or waterproofing consultant advice.