Corotop Red Strong Roof Underlay

Corotop Red Strong Roof Underlay


Roof Underlay used on tiled or slated pitched roofs

Corotop Red Strong is a very durable, three-layer highly vapour permeable membrane. Its layers are joined with a thermos bonding method, which guarantees strong connection between them. Usage of this membrane increases the safety during application. It is recommended especially for fully-boarded roofs.

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    What the experts have to say

    CERTIFICATE NO. 11/0367
    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.
    • Minimises heat loss

    • The product with unquestionable resistance parameters in its class

    • Protects thermal-insulation against damping

    • Regulate two-way vapour permeability

    0.7 mm
    Mass per unit area:
    180 g/m2
    Tensile strength:

    Longitudinal 340 N/50mm

    Transverse 235 N/50mm


    Longitudinal 70 %

    Transverse 120 %

    Tear resistance:

    Longitudinal 255 N

    Transverse 355 N

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

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