Produkty
Roofing screens are an improved version of membranes for initial roofing.
They have the same function but are more reliable and durable.They may be applied in most difficult conditions and locoations on the roof.
The roofing screens produced by Marma Polskie Folie combine high durabilty with very high vapour permability, which is possilbe thanks to state-of-the-art technologies.
Advantages:
- high and uniform vapour permeability,
- high elasticy and lighweight to facilitate instalation,
- water proof, seal the roof,
- very high mechanical durability,
- very high resistance to UV radiation,
- wide product range to facilitate the choice of a proper membrane,
- complete information available for proper installation.
| PARAMETR | VALUE |
| material | PP |
| Mass [g/m2] | 185/+/-20 |
| Sd – diffusively equivalent air layer thickness (m) |
0,015 (+0,03/-0,01) |
| Tearing resistance [N / 5cm] |
along 380 (+80/- 80) across 270 (+80/- 80) |
| Elongation by tearing [%] | along 70 (+/-40) across 90 (+/-40) |
| Water tightness | W1 |
| Standard dimensions on a roll (m) | 1,6m x 50m |
| Reaction to fire | E |
| UV resistance* | 26 weeks |
|
Period without primary covering** |
4 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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