Corotop Grey Breathable Roofing Membrane

Corotop Grey Breathable Roofing Membrane


A  breathable three-layer roofing membrane

A vapour permeable, three-layer roof membrane consisting of functional film. The functional film provides resistance to water penetration and regulates vapour permeability balance in a roof system. Applied only on partly-boarded roofs.

  • BS 5534 / IS 2002
  • NSAI Cert. No. 11/0367
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What the experts have to say

This Certificate relates to Corotop Breathable Membranes for use on tiled or slated pitched roofs. Corotop Breathable Membranes are manufactured by thermally laminating a water vapour permeable film between two layers of non-woven polypropylene. This Certificate certifies compliance with the requirements of the Building Regulations 1997 to 2014.
  • Three-layer product highly resistant to ageing processes

  • Minimize heat loss

  • Regulate two-way vapour permeability

  • Protects thermal-insulation against damping

0.45 mm
Mass per unit area:
100 g/m2
Tensile strength:

Longitudinal 255 N/50mm

Transverse 150 N/50mm


Longitudinal 95 %

Transverse 135 %

Tear resistance:

Longitudinal 135 N

Transverse 190 N

Full Information:
Check out the full datasheet available in the Downloads section!

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