QWS – Quality Window Sealing is a high performance airtightness system, specifically designed for sealing window and door reveals, with excellent vapour control properties and permanent bonding.

Providing the last line of defence against the elements, the PHS Defender system is rigorously tested against wind, hail, driving rain and UV exposure, so as to secure and protect the building structure.

The Gerband rooftite system combines both airtight and windtight solutions that effectively protect and preserve the building structure and provide a healthy and comfortable living environment.