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Home / Products / Polyurethane (PU) Liquid Membrane

Polyurethane (PU) Liquid Membrane

Single-component polyurethane liquid membrane delivering seamless waterproofing with exceptional crack-bridging elasticity.

Seamless Application500% ElongationUV StableCold Applied
SOLIDS~85%
COVERAGE1.0–1.5 kg/m²
CURE (TOUCH-DRY)4–6 hours
SHELF LIFE12 months
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Overview

Seamless protection. Cured by air, not by torch.

Polyurethane Liquid Membrane is a single-component, moisture-curing polyurethane that forms a seamless, elastic waterproofing film on application. Unlike sheet membranes, it has no seams, joints, or weak points – making it ideal for complex geometries, detailed roofs, and substrates with many penetrations.

Compatible with both exposed and screed-protected installations. Suitable for roof, balcony, wet-area, and below-grade applications.

Key Features

  • Single-component – no mixing, no waste
  • Seamless film – no joints, no overlaps
  • Elongation up to 500% – bridges live cracks
  • Aliphatic variant available for UV-exposed applications
  • Excellent adhesion to concrete, metal, and bitumen
  • Cold-applied – safe for occupied buildings

Technical Specs

Technical Specifications

All values measured at 23°C unless noted. Full test data available in the datasheet.

PropertyValueUnit
FormSingle-component liquid (moisture-cured)–
ColourGrey / White / Tile Red–
Solids content~85%
Density1.30 ± 0.05g/cm³
Viscosity3500 ± 500mPa·s
Coverage per coat0.5–0.75kg/m²
Total system coverage1.0–1.5kg/m²
Touch-dry time4–6hours
Full cure7days
Tensile strength4–6MPa
Elongation at break400–500%
Service temperature−30 to +90°C
Packaging5 / 25kg
StandardsEN 1504-2 · ETAG 005–

Applications

Where this product is used

Six typical site applications where our crews specify this product.

🏢

Roof waterproofing

Exposed and screed-protected concrete roofs across residential and commercial projects.

🌿

Balconies & terraces

Trafficable balcony and terrace waterproofing under tiles or pavers.

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Wet areas

Bathroom and kitchen waterproofing under tile finishes.

🏊

Podium decks

Heavy-duty waterproofing on podium slabs above basements.

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Planter boxes

Root-resistant grade for landscaped roof areas.

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Bridge decks

Vehicular trafficked deck waterproofing with screed protection.

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