DCT-R20-2
METAL ROOF EXTERNALLY INSULATED BY RIGID PIR INSULATION BOARD
Pitched metal cathedral roof externally insulated with a continuous vapour and air tight rigid thermoset DCT PIR insulation board supported by purlins, a safety mesh or strapping. The ProctorGeo HC9 drainage mat installed between the roof sheet, and above the vapour permeable ProctorWrap HTS sarking, provides for drainage and acoustic attenuation of rain noise.
Section J (NCC 2019) R-Value Calculator
ProctorGeo HC9 Drainage Spacer Mat is a three dimensional shaped mesh of UV stabilized polypropylene monofilaments, tangled and fused together.
ProctorWrap High Tensile-Roof (HT-S) is a medium weight highly durable medium duty vapour permeable roof underlay for use in tiled, slate and metal roof applications. ProctorWrap HTS-IT is supplied with double integrated tape.
DCT PIR Silver insulation is a general application thermoset PIR insulation board with two low emissivity foil facings, suited for use in non-exposed floor, roof, wall and ceiling applications in residential and commercial buildings.
