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Treads Open Height Closed Height Width Weight 3 1
protection from insect infiltration
Excellent thermal insulation
It features a polyisocyanurate rigid foam core with a low thermal conductivity of 0
Is the product environmentally friendly
Powerlon UltraPerm Lite Underlay 92gsm - 1.0m x 50m (50m2) Roofing accessories Treads Open Height Closed HeightA high performance underlay for all pitched roof types and walls in timber frame structures. Can be used on warm and cold, supported and unsupported, ventilated and unventilated roofs. Key Features: Universal breathable underlay for any roof design. BRE certified. High water vapour permeability. Exceptional water resistance. High nail tear strength. High tensile strength. Pre printed marking lines.
