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DCT-R43-1

FLAT CLT IRMA ROOF WITH DC8 PLUS

Inverted Roof Membrane Assembly (IRMA) CLT roof, insulated externally with a moisture resistant high compressive strength XPS insulation that serves to protect the membrane from UV exposure and maintains the CLT roof at a stable temperature. The insulation is weighted down by a stone ballast loaded above a drainage layer with integrated geotextile to manage rainwater above the insulation layer. Required fall in roof can be provided either by the CLT or a cut to fall XPS insulation.

Section J (NCC 2019) R-Value Calculator

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ProctorGeo D-Rain DC8 Plus is a dimpled HDPE sheet pre-bonded to a 100gsm non-woven geotextile preventing soil particles from blocking drainage. 

DCT GA 300 is a closed cell high compressive strength, low moisture absorption extruded polystyrene (XPS) general application board for insulating roofs, walls and floors in commercial and residential applications 

ProctorGeo D-Rain DC8 is a dimpled HDPE protection sheet or void former. 

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