Premium, hydrophobically treated, UV and heat stabilised polymeric type LR roof underlay with high air and vapour permeability, for use in warm and cold pitched roof constructions. Tough and durable yet easy to cut and handle, with flexibility at low temperatures. Ensures uninterrupted airflow and helps to avoid the risk of harmful condensation without the need for additional ventilation. Can be wrapped over the ridge for ventilation rather than cut short, to help reduce the possibility of water ingress at construction stage. Achieves wind uplift resistance to zones 1-4 at 345mm batten gauge without the need for extra counter batten or integral tape, ensuring wide coverage across the UK and throughout Ireland. Long Lasting Hydrophobically-Treated Tough & Durable Easy to Cut & Handle Long Lasting Hydrophobically-Treated Tough & Durable Easy to Cut & Handle