List of featured suppliers of ROOFING UNDERLAYS PITCHED ROOF MEMBRANES BS EN 13859-1 CE Marked on Building Products Index
Roofing underlays are layers of material placed beneath the roofing material to provide additional protection against weather elements and improve its durability. Pitched roof membranes refer to flexible sheets of material that are installed over the roof underlay to provide further protection against water penetration. BS EN 13859-1 is a European standard that specifies the requirements for pitched roof underlays and sets the performance criteria for the material used in roofing construction. CE marking confirms that the product meets the essential health, safety and environmental requirements.