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DCT-R05-4

FLAT CONCRETE IRMA ROOF WITH PEDESTALS AND PAVERS (PROCTORGEO IRMA)

Inverted Roof Membrane Assembly (IRMA) concrete roof with pavers on pedestals, insulated externally with a moisture resistant high compressive strength DCT GA300 XPS insulation that serves to protect the membrane from exposure and maintains the roof slab at a stable indoor temperature. A water resistant ProctorGeo IRMA geotextile installed above the insulation manages rainwater to minimise rainwater cooling below the insulation.

Section J (NCC 2019) R-Value Calculator

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ProctorGeo IRMA is a water resistant and vapour permeable spunbonded polyolefin non-woven geotextile for use as a separating layer in ballasted or paved Inverted Roof Membrane Assembly (IRMA) flat roofs.

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 

DCT Max Series Adjustable Pedestals provide the support foundation for decking or tiled raised terraces up to 950mm, with very high compressive strength and optional attachments for slope levelling.

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