A roofing membrane is an important part of a pitched roof system, helping provide a secondary layer of protection beneath the tiles or slates.
With different types available, choosing the right membrane depends on the roof construction and ventilation requirements.
What Does a Roofing Membrane Do?
Roofing membranes are installed beneath the main roof covering.
They help protect the roof from wind-driven rain, snow and moisture that may get past the tiles or slates, directing water safely towards the eaves.
Breathable vs Non-Breathable Membranes
One of the main choices is between breathable and non-breathable membranes.
Breathable membranes allow water vapour to pass through the membrane while helping prevent external moisture from getting into the roof.
Non-breathable membranes have greater resistance to water vapour passing through, so the roof construction will generally require appropriate ventilation to manage moisture.
The correct option depends on the design of the roof, so always follow the relevant manufacturer and installation guidance.
Which Roofing Membrane Should You Choose?
Before buying, check:
- Whether it’s suitable for the roof construction
- Ventilation requirements
- Roll dimensions and coverage
- Installation requirements
- Relevant product specifications and approvals
Don’t choose a membrane based on price alone. Using the right product for the roof system is more important.
Don’t Forget the Accessories
Depending on the membrane and installation, you may also need suitable membrane tapes, fixings and other roofing accessories to complete the job correctly.
Always follow the membrane manufacturer’s installation instructions.
Shop Roofing Membranes at eRoofing
eRoofing stocks a range of roofing membranes and accessories for pitched roofing projects, repairs and new installations.
