UltraPerm Max 155gsm Roof & Wall Breather Membrane / Underlay - All Sizes Size:1.5m x 50m (75m2) Strong dove-tail joints from steps

Strong dove-tail joints from steps to stringers

accommodating all stages of the jointing process

Boasting high-quality formulation for durability

Board Thickness: 25mm or 30mm or 40mm or 50mm or 60mm or 75mm or 100mm

Gyproc Thermal Plus XPS or extruded polystyrene board provides an ideal solution for insulation of walls

UltraPerm Max 155gsm Roof & Wall Breather Membrane / Underlay - All Sizes Size:1.5m x 50m (75m2) Strong dove-tail joints from stepsPowerlon 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 characteristics and good UV stability. Key Features: UltraPerm Max 155gsm Economy breather membrane roof underlay BBA certified for