What is Delta® Terraxx
Delta® Terraxx is a dimpled sheet with welded geotextile installed externally as a protection cum drainage layer to basement walls and its waterproofing system.
- External surfaces of walls in contact with the earth
- Retaining walls, lift pit walls etc.
- Extensively planted roofs
- Basements and flat roofs
- Walkways, flag pavements, gravelled flat roofs, and foundations slabs
- High compressive strength of 400 kN/m2
- 9 mm dimples provides high drainage capacity
- Resists degradation in soil and chemical attack
- Non-polluting of drinking water
- Unaffected by saline solutions, acids, alkalines, oil, polar liquids and solvents
- Rot-proof
- Excellent temperature range from – 30 °C to + 80 °C
- Excellent resistance to puncture and decay
- Guaranteed against degradation for 20 years
- Outstanding drainage capacity of 3.1 l/s · m under a load of 20 kN/m2
- Meets EN 13252, DIN 4095 and DIN 18195 requirements
- Integrated sealing edge for easier laying
- Installed swiftly and cost-efficiently without any additional excavation work
- Excellent durability reduces future maintenance costs
- Permanent-filtration geotextile keeps the dimple structure from silting up
- Water drainage capacity greater than that of a gravel/chip bed
- Protects basement-wall waterproofing and perimeter insulation boards from moisture, safeguarding their insulation performance
- Maximum safety for basements from impounded, seepage, and fissure water
- Reliably drains off methane gas and radon
- May be installed at depths of up to 10 m, even in extremely wet environments
- Forms an extremely robust protection and drainage layer
Refer to DELTA® MS
| PROPERTY | VALUE |
| Material | High-density polyethylene |
| Geotextile material | Polypropylene |
| Compressive strength | ~ 400 kN/m² |
| Drainage capacity | ~ 10 l/s · m |
| Tensile strength | MD 6 kN/m/CMD 6 kN/m (EN 10319) |
| Air gaps between dimples | ~ 7.9 l/m² |
| Dimple height | ~ 9 mm |
| Dynamic perforation resistance | 40 mm (EN 918) |
| Characteristic opening size | 150 µm (EN ISO 12956) |
| Temperature resistance | -30 °C to 80 °C |
| Water permeability | 8 · 10-2 m/s (EN ISO 11058) |
| Drainage capacity, water flow capacity in the plane | 3.1 · 10-3 m²/s (EN ISO 12958) at 20 kN/m² |