Waterproofing
SelfSeal HDPE 150 DS
SelfSeal HDPE 150 DS
Sand Coated HDPE Membrane with Dual Selvage
A high-density polyethylene waterproofing membrane with sand coating and dual selvage edges designed to facilitate secure lap joints during installation. The membrane provides excellent resistance to hydrostatic pressure, chemicals and soil contaminants and is suitable for structural waterproofing of underground elements.
Features and Benefits
- Pre-manufactured to a controlled thickness, reducing site-related thickness variation.
- High puncture resistance with high tensile strength and elongation.
- High peel adhesion to concrete and excellent adhesion at membrane joints.
- Dual selvage for excellent overlap bonding and watertight joint formation.
- Pre-applied pressure-sensitive adhesive enables bonding to poured concrete.
- Helps prevent lateral water migration and provides resistance to high hydrostatic pressure.
- Suitable for demanding below-ground waterproofing applications.
- Retention of 90% tensile and elongation properties after 45 days UV exposure.
Area of Applications
- Basement and below-ground waterproofing.
- Waterproofing below raft foundations.
- Retaining walls and blind-side waterproofing.
- RCC podiums and car parks.
- Underground concrete structures.
- Cut-and-cover tunnels, subways, underpasses, roads and bridges.
- Underground metro structures.
- Structures exposed to hydrostatic pressure.
Technical Specifications
| Property | Test Method | Result |
|---|---|---|
| Composite Thickness | ASTM D3767:2003 | 1.5 mm |
| Pure HDPE Thickness | ASTM D3767:2003 | 1.2 mm |
| Tensile Strength – Longitudinal | ASTM D412:2016 | 25 N/mm² |
| Tensile Strength – Transverse | ASTM D412:2016 | 25 N/mm² |
| Elongation at Break – Longitudinal | ASTM D412:2016 | 500 % |
| Elongation at Break – Transverse | ASTM D412:2016 | 500 % |
| Puncture Resistance | ASTM E154:2008 | 1200 N |
| Low Temperature Flexibility at -25°C | ASTM D1970:2021 | No Crack |
| Resistance to Hydrostatic Head up to 7 bar (71.4 m) | ASTM D5385:2025 | No Leakage |
| Dimensional Stability – Longitudinal, 80°C / 24 h | ASTM D1204:2014 | < 1 % |
| Dimensional Stability – Transverse, 80°C / 24 h | ASTM D1204:2014 | < 1 % |
| Peel Adhesion to Concrete | ASTM D903:1998 | 1500 N/m |
| Lap Peel Adhesion | ASTM D1876:2008 | 1500 N/m |
| Lateral Water Migration up to 7 bar (71.4 m) | ASTM D5385:2025 | No Leakage |
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