Vapour Permeable Underlay

Cut to your exact requirements! 

Cromar Vent3 is a lightweight, breathable membrane designed for pitched roof applications.

It is designed to be installed coloured side up.

Roof underlay for both warm and cold pitched roofs. Provides a barrier to wind-driven rain, snow and dust into the roof void.

Lightweight, strong and easy to handle.

If you would like any more information on this product, please call the number at the top of this page and speak to our super efficient sales team now!

• Width: 1m
• Length: Cut to size! (max length 50m)

• Roof underlay for both warm and cold pitched roofs
• BBA certified quality product
• Provides a barrier to wind driven rain, snow and dust into the roof void
• Excellent waterproofing characteristics
• High water vapour permeability
• Membrane is lightweight, strong and easy to handle and install
• UV stabilised and has an increased flammability resistance

Cut to your exact requirements! 

Cromar Vent3 is a lightweight, breathable membrane designed for pitched roof applications.

It is designed to be installed coloured side up.

Roof underlay for both warm and cold pitched roofs. Provides a barrier to wind-driven rain, snow and dust into the roof void.

Lightweight, strong and easy to handle.

If you would like any more information on this product, please call the number at the top of this page and speak to our super efficient sales team now!

• Width: 1.5m
• Length: Cut to size! (max length 50m)

• Roof underlay for both warm and cold pitched roofs
• BBA certified quality product
• Provides a barrier to wind driven rain, snow and dust into the roof void
• Excellent waterproofing characteristics
• High water vapour permeability
• Membrane is lightweight, strong and easy to handle and install
• UV stabilised and has an increased flammability resistance