Waterproofing
SelfSeal HDPE 120 SC
SelfSeal HDPE 120 SC
Sand Coated HDPE Membrane
hahne SelfSeal HDPE 120 SC is a high-performance, pre-applied waterproofing membrane comprising a high-density polyethylene (HDPE) film, pressure-sensitive adhesive layer and a reactive inorganic sand-coated surface. The membrane is designed to form a strong and continuous bond with poured concrete, providing reliable protection against water ingress and lateral water migration.Its high tensile strength, exceptional elongation, puncture resistance and resistance to hydrostatic pressure make it suitable for waterproofing below-ground and other demanding concretestructures. The pre-applied adhesive system enables fast and convenient installation
- Pre-applied and fully bonded waterproofing system forms a continuous bond with poured concrete.
- Self-adhesive technology enables fast and efficient installation.
- Excellent resistance to water ingress and lateral water migration.
- High tensile strength and exceptional elongation for accommodating substrate movement.
- Outstanding puncture resistance for enhanced durability during construction.
- High peel adhesion to concrete and strong lap adhesion at joints.
- High resistance to hydrostatic pressure.
- Consistent factory-controlled thickness.
- 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 | 1.2 mm |
| Pure HDPE Thickness | ASTM D3767:2003 | 0.9 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 | 1000 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 |