Roof Insulation Construction Details

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Roof insulation construction details.

The vapour control layer is above the decking but below the insulation. In this case the insulation must lie directly on top of the ceiling. To get the details most relevant for your project contact us with your specific design build needs. A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building.

Roof insulation systems applications. Most details show a second layer of sheathing on top of foam then the roofing material. View the complete roofing manual for all product details. In residential wood frame construction this involves installing rigid insulation between the roof shingles and the roof plywood or osb.

Load bearing or primary structure usually constructed in timber in a residential construction. The construction of the flat roof is similar to that of the timber upper floor. Our in house technical department is available to help provide accurate design and construction details for insulfoam products. In most cases the attic is ventilated and the infiltration barrier is the drywall ceiling.

My concept should yield about an r52. The insulation is immediately below the waterproofing layer. Roof ceiling insulation insulation in roof ceiling constructions must be placed in direct contact with the infiltration barrier. The installation of the rigid insulation elevates the temperature of the roof deck to minimize condensation.