Vapour-permeable film ML
ML 90, ML 100, ML 140 are vapour-permeable roof films used in inclined roof constructions as a multifunctional protection of the attic insulation under the roof cover. Thanks to micro perforation it is possible to release the water vapour getting into the insulation from the outer layers of the roof, forming a barrier for dust, wind and water from outside at the same time. ML films are three-layer films, reinforced with a polypropylene net, thanks to which, they possess good sustainability parameters against tearing. ML type films fulfill all the requirements of the European norm EN 13859-1:2005 and are labeled with the CE symbol.
|
PARAMETER |
ML 90 |
ML 110 |
ML 140 |
|
Surface mass |
90 g/m2 |
110 g/m2 |
140 g/m2 |
|
Reaction on fire |
F |
F |
E |
|
Water resistance
|
class W3 |
class W3 |
class W3 |
|
Lengthwise stretching resistance
|
(300±180) N/50mm |
(300±180) N/50mm |
(300±180) N/50mm |
|
Crosswise stretching resistance
|
13% ± 6% |
13% ± 6% |
13% ± 6% |
|
Crosswise elongation
|
13% ± 6% |
13% ± 6% |
13% ± 6% |
|
Tearing resistance
|
(200 ± 140) N |
(200 ± 140) N |
(200 ± 140) N |
|
Flexibility in low temperatures |
- 25 °C |
- 25 °C |
- 25 °C |
|
Roll size |
1,5 x 50 m |
1,5 x 50 m |
1,5 x 50 m |
© 2021 Marma Polskie Folie