Technical document
Polyurethane Waterproofing Coating TDS
Data sheet for Petroseal polyurethane coating: one-component, moisture-curing liquid membrane for roofs, terraces, balconies and floors.
Petroseal polyurethane chemical coating cures with atmospheric humidity into a seamless, highly elastic waterproofing membrane with no laps or joints. It follows complex roof geometry, terraces, balconies and industrial floors where sheet membranes are difficult to detail.
It is a waterproofing coating, not thermal insulation. Prime porous substrates, reinforce cracks and junctions with polyester fleece, apply two coats crosswise, and finish with a UV-stable top coat where the membrane is exposed to sunlight.
Key specifications
Values shown are taken from the published brochure/TDS. Project acceptance follows the approved batch certificate and consultant specification.
- Chemistry
- One-component moisture-curing polyurethane
- Total consumption
- 1.5 – 2.0 kg/m² (primer + 2 coats)
- Tensile strength
- ≥ 1.5 MPa — ASTM D412
- Elongation at break
- ≥ 700 % — ASTM D412
- Hardness
- 50 – 65 Shore A — ASTM D2240
- Service temperature
- −30 °C to +60 °C
- Dry to touch / recoat
- 1 – 2 h / 6 – 48 h at 25 °C, 50% RH
- Rain-resistant / full cure
- 4 hours / 7 days
- Application temperature
- +5 °C to +35 °C, relative humidity below 65%
- Packaging / shelf life
- 6 kg and 25 kg / 9 months unopened
Applications
- — Roof waterproofing, exposed (with UV-stable top coat) or under protection
- — Terraces and balconies, including under tiles
- — Industrial floors
- — Detailing around penetrations, upstands and complex shapes
Referenced standards
ASTM D412 · ASTM D2240 · ISO 2811 · EN 12390-8
Related products
- Polyurethane Chemical Coatings
Seamless liquid waterproofing for roofs, terraces, and industrial floors.