ITP - Model UltraPerm -Powerlon Roofing Underlay

Available in four different grades, Powerlon UltraPerm is a range of high-performance breathable underlays for all pitched roof designs and wall applications (timber frame). Available with or without integrated self-adhesive strips, its non-woven composite membrane is tough, durable and tear resistant with exceptional water vapour permeability and hydrophobic (water repellent) characteristics. The BBA-certified Powerlon UltraPerm range is fully tested to the latest BS 5534:2014 + A1:2015 zones 1-5.