A high-performance underlay for all pitched roof types and walls in timber frames structures. Can be used on warm and cold, supported and unsupported, ventilated and unventilated roofs.
W1 water tightness
BBA certified and CE approved
Breathable with high water vapour permeability
High tensile strength and nail tear resistance
Pre printed marking lines
Independently tested for full compliance with BS 5534:2014 + A2 2018
Nationwide Delivery
