DCT-R04-1(R)
RESIDENTIAL PITCHED TILED ROOF CATHEDRAL CEILING BELOW RAFTERS (PIR)
Residential timber structure tiled roof with cathedral ceiling below the rafters. The rigid thermoset PIR insulation board forms a continuous air and vapour control layer at the ceiling with further ceiling insulation added above. The vapour permeable sarking, provides drainage of any moisture or condensate forming below the tiles. Suitable for ventilated and unventilated roofs.
Section J (NCC 2019) R-Value Calculator
Roof sarking / wall wrap shall be [ProctorWrap HTS/ ProctorWrap HTS-IT (with integrated tape)] vapour permeable sarking membrane, compliant to AS/NZS 4200.1:2017, secured directly to the outside of the roof/wall framing in accordance with the product user guide. AS/NZS 4200.1:2017 Classifications: Medium Duty; Water Barrier; Class 4 Vapour Permeable; AS1530.2 Flammability Index ≤ 5, Thickness ≤ 1.0mm; Air barrier; Non-conductive; Non-reflective; Vapour Permeance to ASTM E96(B) no less than 2.5µg/N.s. Foil type sarkings do not comply with this specification.
DCT Vulcanwool is a non-combustible high density mineral rock fibre stonewool insulation for use internally or as an external grade insulation with water shedding characteristics, designed for use in ventilated rainscreen facades and other thermal and acoustic wall, roof, floor and ceiling applications in residential and commercial buildings.
The insulation shall be DCT Vulcanwool thickness [… mm] & density [… kg/m3] non-combustible (AS 1530.1) with a low (<1kg/m2) moisture absorption (EN 1609.) DCT Vulcanwool Stonewool is manufactured under licence for DCTech.
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.
The insulation shall be DCT PIR Silver […mm] polyisocyanurate (PIR) foam panel with minimum compressive strength of 120 kPa. DCT PIR Silver polyisocyanurate insulation board is manufactured under licence for DCTech.
