When installing composite decking onto structural joists we advise 400mm centres
The VELUX ETW WK34 2000 Pro+ flashing set is designed for fixed roof windows on roofs with universal tiles up to 120mm thick
SOLAR POWERED to work in sync with your SOLAR roof window
Core Thermal Resistance: 2
Angle: Pitched
UltraFlex PU Liquid Waterproofing Kit - 600m² video_erfT9AbHugA When installing composite decking ontoDelivery: IN STOCK. NEXT DAY DELIVERY (if ordered before 13: 00) Key Features: Kit Coverage: 600m2 Colour: Grey Application: Flat roofs, Balconies, Terraces, Walkways and Gutters. Suitable materials: Excellent adhesion to plywood, OSB board, existing GRP, bitumen membranes, asphalt, metals, brick, concrete, wood etc Guarantee: BBA certified for life in excess of 25 years Kit includes: 60 x UltraFlex 15 kg Grey 6 x Ultraflex Reinforcment Matting 225g