Skip to content


Here we answer some frequently asked questions about our products, their uses and their benefits.

Fitting ventilation to an open eaves

Find out more

How do I ventilate a cold flat roof and which product do I use?

Find out more

In the spotlight – Fulmetal RediRoll

Find out more

MR50 Monovent – Q&A

Find out more

Protect AluFlash frequently asked questions

Find out more

Protect Viking Air frequently asked questions

Find out more

Stepped cavity trays

Find out more

Want to know more about trickle vents?

Find out more

Your loft hatch questions answered

Find out more

Talk to us

Contact us today to discover more about our extensive range of building product solutions and the technical support services we can offer.

Get in touch

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

Please be vigilant of fraud/cyber crime. If you receive an email from our parent company Building Product Design Ltd, please check that the email address from the sender ends in '' and any phone number given is 0161 905 5700.

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

Site by Harris