Part of The Specialist membrane range, Permo Extreme is a tear-resistant roof underlay designed for use on low pitched roofs, down to a minimum roof pitch of 12.5° for interlocking tiles, 15° for slates and 22.5° for plain tiles. This makes Permo Extreme roof membrane the perfect solution for extensions and lean-tos, particularly as the roll is available in a half-size for smaller projects. The membrane is fleece lined to control condensation, whilst it’s fitted with self-adhesive tape, which provides a permanent seal of overlaps and immediate weatherproofing protection against wind, rain and snow. Permo Extreme is also highly temperature resistant from -40°C to +100°C and can be deemed as a primary barrier when installed with Klober accessories and covered by a UV protected layer such as tiles or slates.
When installing roofing membrane products, it’s important that steps are taken to ensure the process is safe and efficient. Here we have compiled seven top tips to think about before you get startedFind out more