QMG Variable Size: 25m x 1m

A high performance breather roof underlay for cold and warm roof application, requires no ventilation.

Powerlon UltraPerm is a high performance underlay for all roof types and walls in timber frame structures. UltraPerm membranes can be used on warm and cold, supported and unsupported, ventilated and unventilated roofs. Ultra-Perm is a non-woven composite membrane with exceptional water vapour transmission, hydrophobic (water repellent) characteristics and good UV stability.