Metra zero
brevetto patent
Breathable and waterproofing underlay
VAPOUR BARRIER
EXTRUSION COATING
RECYCLEBLE
INTERNAL APPLICATION
RESPECT FOR THE ENVIRONMENT
WALL
Synthetic vapour barrier membrane composed of 2 layers: a polypropylene non-woven with an extrusion coating of vapour polypropylene film, which makes the product completely recyclable. The particular features of the product are the high resistance to the passage of water vapour and mechanical strength.
Place in direct contact with the thermal insulation on the hot side of the structure regulates the passage of water vapour through the structure. Particularly suitable for direct installation on the inclined roof paneling or on the wall.
| CHECKED CHARACTERISTICS | NORM | UNIT OF MEASURE | VALUE |
|---|---|---|---|
| Mass per unit area | EN 13859-1 | g/m2 | 135±5% |
| Thickness | EN 1849-2 | mm | 0,35±15% |
| Tensile strength |
EN 13859-1 |
N/5cm | MD: 175±15% CD: 120±15% |
| Elongation | EN 13859-1 | % | MD: 65-75% CD: 65-75% |
| Nail tearing |
EN 13859-1 |
N | MD: 120±15% CD: 130±15% |
| UV resistance | Internal method | 3 months | |
| Water vapour transmission property |
EN 13859-1 |
g/m² x 24h m |
WDD: 0,7±15% Sd= 60 23°C 93/50% RH |
| Dimensional stability | EN 13859-1 (80°C) |
% |
MD: -0,5<ΔL<0 CD: -0,5<ΔL<0
|
| Flexibility at low termperature | EN 13859-1 | °C | -40 |
For information regarding use, handling, storage and security see DOP
Product subject to CE mark according to EN 13859-1/EN 13859-2
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