Timber frame wall with a rigid sheathing board made water and air tight by the self-adhered vapour permeable ProctorPassive Wraptite SA, externally insulated with a thermoset rigid DCT PIR insulation, protected by a lightweight cladding on battens. The insulation is mechanically fixed to the sheathing board with minimal thermal bridging, to form a continuous external insulation layer. Additional insulation within the frame would only be considered having assessed condensation risk.
ProctorPassive Wraptite Self Adhesive (SA) is a light duty vapour permeable membrane for wall and metal roof application functioning as water and air barrier in one innovative vapour permeable self-adhering product.
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.