ISO-DRAIN nature 10 GP
Vapour-permeable drainage for inverted roofs
ISO-DRAIN nature 10 GP was developed for vapour-permeable drainage on inverted roofs. Installed with the dimples facing up, it provides capillary-break drainage beneath terraces, paths and open areas and helps relieve hydrostatic pressure.
The perforations, approximately 2 × 9 mm, allow vapour pressure to equalise above the thermal insulation. Closely spaced dimples and the durable Typar® geotextile provide a stable bearing surface. The data table gives a drainage capacity of approximately 3.5 l/(m·s).
For use beneath parking decks and other areas with vehicular traffic, the brochure specifies a version with an area weight of 1,000 g/m².
Build-up – layers from bottom to top
- Flat roof
- Roof waterproofing
- Separation layer / thermal insulation / separation layer
- ISO-DRAIN nature 10 GP
- Sand bedding
- Paver or slab finish
Technical data
| Property | ISO-DRAIN nature 10 GP |
|---|---|
| Material | HDPE and PP |
| Colour | black and silver-grey |
| Area weight | approx. 740 g/m² |
| Dimple height | approx. 10 mm |
| Dimple count | approx. 3,368 per m² |
| Air volume between dimples | approx. 7.9 l/m (unit as stated in the brochure) |
| Compressive strength | approx. 420 kN/m² |
| Dimensions | 2.00 × 12.50 m |
| Perforations | approx. 2 × 9 mm |
| Drainage capacity | approx. 3.5 l/(m·s) |
| Tensile strength | > 16 kN/m |
| Strain at maximum load | approx. 50% |
| CE certificate | EN ISO 13252 |
| Service temperature range | −40 to +80 °C |
| Physiological properties | safe for drinking water according to the brochure |
Data from the product brochure, dated August 2016.