Produkty
Patent No. 243103 granted on 2023.04.12 (effective since 2019.07.01)
The MPFort 2F SCREEN is a global breakthrough in the market for highly vapor-permeable roofing underlays. Produced by Marma Polskie Folie using patented technology, it introduces new standards in this category of roofing materials.
This innovative technology not only enhances the quality of membranes but also significantly increases their functionality and durability. The MPFort 2F SCREEN offers the highest strength while maintaining very high vapor permeability, which ensures excellent energy savings for heating purposes.
In traditional roofing underlay membranes, there is a film layer that blocks external water while allowing water vapor from inside the home to escape. The MPFort 2F membrane features two such films, joined by a special nonwoven fabric with vertical fibers, which creates an additional separating layer. This space effectively dampens bothersome, high-frequency sounds.
| PARAMETR | VALUE |
| Material |
|
| Weight [g/m2] | 300 +/- 35 |
| Sd – equivalent air layer thickness [m] |
0,015 (+0,06 / - 0,01) |
| Tensile strength [N / 5cm] | along 550 (+/-200) across 450 (+/-200) |
| Elongation at break [%] |
along 80 (+/-40) |
| Tear resistance on nail [N] |
along 450 (+/-200) |
| Waterproofness
|
W1 |
| Standard roll dimensions [m] | width 1,6m length 25m |
| Fire resistance class
|
E |
| UV resistance* | 26 weeks |
| Period without primary covering** | 6 weeks |
* According to laboratory studies conducted under artificial aging, this period is based on average annual UV exposure from sunlight in Central Europe.
** The recommended period for the membrane to remain on the roof without primary covering should be as short as possible, depending on the membrane’s construction.
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