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Underlay Membrane 150
Art.No. 363624

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Details

Application Areas:

To produce underside covers on steep roofs

Also suitable as temporary cover (using additional measures)

For direct installation on wooden formwork or thermal insulation behind closed walls

Advantages:

  • Highly open to diffusion
  • Stongly resistant against water penetration
  • UV-resistant
  • Anti-glare
  • Tear-resistant
  • CE conform
  • Non-slip and puncture-proof
  • 363624 self adhesive version 363625 without self adhesion
  • Classification USB-A / UDB-A according to ZVDH product data sheet

Processing information

This Berner underbody membrane is installed horizontally with an overlap of approximately 15 cm (see overlap line) on the thermal insulation or at a right angle to the rafters, without tension and sagging.
When falling below the standard roof slope, local building installation regulations and instructions must be taken into account.
When used in the roof ridge area, installation over the roof ridge is done with an overlap of approximately 30 cm.
Nail sealing tape is used for optimal sealing of the nail holes.
Non-insulated attics require adequate ventilation.
Diffusion tape is used to repair minor damages and to tape off butt and overlap edges.
The sheet may be installed directly on the thermal insulation or rafters with recommended overlap.

Advice

To ensure the proper function of the roofing felt, the entire roof structure must be built in accordance with applicable local regulations and guidelines.
Additional precautions must be taken in case of extreme weather conditions (e.g. continuous or driving rain, etc.).
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