| Our products :: Traditional Bitumen Papers :: PP-50/700
:: PP-50/700
 Ventilation membrane
Application: |
Ventilation membrane IZOBIT PP 50/700 is designed for making of roof covers ventilation in the single- and multi-layer systems. It is especially recommended for making renovations of old roofing covers and also for making of the new one. It should be fitted widely spaced with 2-3 cm tuck and also the about 0,5m distance should be kept from eaves area, ventilation space, projection parts of the roof, fire ledge etc. Ventilation membrane should not be treated as a layer in the roof covering system. The product should be used together with ventilation chimneys. |
| 1. Mineral surface | | 2. Oxidized asphalt | | 3. Glass fiber veil 50g/m² | | 4. Oxidized asphalt | | 5. Mineral surface |
| Dimensions |
| Length |
min 20,0 m |
| Width |
min 1,0 mm (± 10) |
| thickness |
2,1 (± 5%) |
| Asphalt content |
| min 700 g/m² |
| Basis weight of warp |
| min 50g/m² |
| Flexibility at low temperature |
| inadmissible arising of cracks at the (higher or equal) temp. of 0oC |
| Flow resistance at the higher temperature |
| inadmissible flow at the (higher or equal) temp. of +70oC |
| hole diameter [mm] |
| not more then 40 |
| membrane perforation |
| not less then 12 |
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