Product type: vapor barrier foil
Structure: 1 layer
Roll width: 1.5 m
Roll length: 50 m
Covered area: 75 sqm
EAN: 5941234504128
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Contact usBilka Soft is a traditional roofing membrane made of PE woven fabric , featuring a micro-perforated thermo-reflective layer, designed for use in double-ventilated roof structures.
This membrane does not allow water vapour to pass through; therefore, a ventilation gap must be ensured between the membrane and the thermal insulation. It must be installed parallel to the eaves, with a minimum overlap of 10 cm, taking into account the water drainage direction on the roof slope. The membrane must not be overlapped over the roof ridge, in order to allow proper vapour evacuation at the ridge.
The Bilka Soft anti-condensation membrane has dimensions of 1.5 × 50 meters and is supplied in rolls.
| Product name: | BILKA Soft Membrane | |
| Packing dimensions: | Rolls 1.5 m × 50 m = 75 m² / roll | |
| Intended use: | Special membrane with thermo-reflective layer, used in double-ventilated roof structures, providing additional protection against moisture and dust penetration under the roofing. | |
| Material: | PE woven-based membrane coated with a micro-perforated thermo-reflective layer | |
| Properties: | Test methods | Product performance |
| Roll length | EN 1848-2 | 50 m; (-)0% |
| Roll width | EN 1848-2 | 150 cm; (-)0.5% / (+)1.5% |
| Linearity | EN 1848-2 | < 30 mm / 10 m |
| Specific weight | EN 1849-2 | 75 g/m²; (-15 g; +10 g) |
| Reaction to fire | EN 13501-1, EN ISO 11925-2 | Euroclass F |
| Water tightness | EN 1928 | W2 |
| Vapour permeability (Sd) | EN 1931 | 1 m |
| Tensile strength (Long./Transv.) | EN 12311-1 | 300 N/5 cm (±10%) / 250 N/5 cm (±15%) |
| Tensile strength reduction after ageing (Long./Transv.) | EN 12311-1 | 45% / 45% |
| Elongation (Long./Transv.) | EN 12311-1 | 15% / >15% |
| Elongation reduction after ageing (Long./Transv.) | EN 12311-1 | 30% / 30% |
| Nail tear resistance (Long./Transv.) | EN 12310-1 | 100 N (±30%) / 90 N (±30%) |
| Flexibility at low temperature | EN 1109 | -10°C |
When used as an under-roof membrane, installation must comply with current standards (DIN 4108). As it is not vapour-permeable, it must be installed with ventilation above and below, fixed onto rafters with counter-battens, with the metallized side facing the roofing. The membrane must not be overlapped over the roof ridge to ensure proper vapour evacuation.
The membrane must be installed parallel to the eaves, with a minimum overlap of 10 cm, following the water drainage direction. It has normal resistance to thermal load (with proper ventilation max. 70°C), operating temperature range 0°C – 40°C, and maximum exposure period of 4 weeks.
Store away from radiant heat and direct sunlight, in a dry and covered area.
When storage rules are respected, the product maintains its properties for 5 years from the date of purchase.
In accordance with current regulations, subject to compliance with transport and installation conditions specified by the distributor and presentation of the purchase invoice.
SR EN 13984
No known risks that could affect human health.
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