Products for building
The roofing membranes DACHVENT are used as initial roofing material for inclined roofs. They prevent penetration of rain and snow into thermal insulation and roof structure.
They protect from condensate forming under primary roofing. Additionally, thanks to high-vapour permeability, they keep the entire roof dry, which is of particular importance for energy savings in buildings.
Now, thanks to the work of our specialists at the Research and Development Centre, we can offer membranes with increased tear resistance. For details, please contact our sales representatives and technical advisors.
Advantages:
- High and uniform vapour permeability
- Great flexibility and light weight, which facilitate installation
- Waterproofness, ensuring a watertight roof
- High mechanical strength
- High resistance to UV radiation
- Wide product range, making it easier to choose the right membrane
- Comprehensive information, guaranteeing correct application
| PARAMETER | VALUE |
| Material | polypropylene - 3 layers |
| Mass [g/m²] | 135 ±25 |
| Sd – equivalent air layer thickness [m] | 0.015 (+0.03/-0.01) |
| Tensile strength [N/5cm] | lengthwise: 280 (+60/-80) crosswise: 190 (+60/-80) |
| Elongation at break [%] | lengthwise: 90 (±50) crosswise: 110 (±50) |
| Nail tear resistance [N] | lengthwise: 180 (±70) crosswise: 230 (±70) |
| Water tightness class | W1 |
| Fire resistance class | E |
| Roll dimensions [m] | width 1.6 m × length 50 m |
| UV resistance* | 26 weeks |
| Period without main covering** | 3 weeks |
* According to laboratory studies conducted under artificial aging, this period is based on average annual UV exposure from sunlight in Central Europe.
** The period for which the membrane remains on the roof without the primary covering should be as short as possible; the more sunny days there are, the shorter this period should be.
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