Waterproofing
SelfSeal HDPE 150 HW
SelfSeal HDPE 150 HW
Sand Coated HDPE Membrane with Heat-Weldable Selvage
hahne SelfSeal HDPE 150 HW is a high-performance, flexible HighDensity Polyethylene (HDPE) waterproofing membrane comprising an HDPE film, pre-applied pressure-sensitive adhesive, reactive inorganic fine granule layer and heat-weldable selvage. It is manufactured with a nominal composite thickness of 1.5 mm and is designed for waterproofing basements, podiums and other belowground concrete structures.The membrane is designed to bond to poured concrete, providing a continuous waterproofing layer and protection against water ingress and lateral water migration. The heat-weldable selvage enables secure fusion of membrane joints, while the high mechanical properties provide excellent puncture resistance, tensile strength and elongation.
- 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.
- Heat-weldable selvage for reliable fusion of membrane overlaps.
- 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.
- 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.
| 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 |
| Joint Shear Strength | ASTM D6392:2025 | 15000 N/m |
| Lateral Water Migration up to 7 bar (71.4 m) | ASTM D5385:2025 | No Leakage |