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Vapour permeable & air open underlay

Glidevale Protect manufactures an innovative air and vapour permeable roofing underlay which delivers ventilation into the roofspace via a hydrophobically treated, melt-blown technology core. This ensures an uninterrupted airflow rate and delivers the required permeability to eliminate the need for additional roof ventilation whilst allowing vapour to escape and controlling the risk of condensation. With no additional ventilation required, this saves time and labour on installation whilst helping to ensure a healthier building for occupants.

Click here for details of our 15 year product warranty for roofing underlays and ventilation used as a system with solar applications.

Our collection includes

Protect Viking Air vapour permeable & air open underlay

Glidevale Protect is a division of Building Product Design Ltd.

Other subsidiaries include ventilation systems specialist Passivent and Kingfisher Louvres, manufacturer of aluminium louvres systems.

Important Notice

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If you receive any emails ending in '' or '', these are NOT legitimate, and you should contact us as soon as possible at

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