Insulation Under Concrete Slab Detail

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Insulation under concrete slab detail.

Slabs that include embedded hydronic tubing for radiant heat always need a continuous layer of horizontal insulation under the entire slab. Faced 2 unfaced 3 insulation features. A continuous layer of horizontal insulation reduces heat loss in the winter and it reduces condensation of humid air on the slab during the summer. This technique can limit inward vapor movement when the sun shines on damp bricks.

View product details. Where the heating is likely to be turned on and off such as in new build domestic properties and a faster thermal response is required the floating floor arrangement of insulation above the slab can be more appropriate. Under the slab to maintain a seasonal average slab temperature that is 10 f above the seasonal average soil temperature through a heating season lasting from october 1 through april 30 a slab insulated with 1 inch of foam would lose 7 1 million btu more than a slab insulated with 2 inches of foam. Slab edge may be responsible for about 60 of the slab s total heat loss certainteed effect of slab edge insulation rem design simulations 8 increase in total heating consumption with no slab edge insulation 62 of heat loss through slab edge 16.

Under slab 5 more ways to filter. Cement 3 concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. Below grade under slab with foamular xps insulation. Additionally a layer of rigid foam is used between the framing and ventilation space behind the brick cladding.

Eps 3 xps 2 faced or unfaced. Rigid insulation is placed horizontally under the slab perimeter and vertically in the joint at the slab edge. Under slab insulation specifically designed to withstand the weight of a concrete slab and the rigors of foot traffic. Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications.

Products in this solution. Insulation below the slab suits continuous low level heating gradually warming the thermal mass of the concrete and sustaining it at a consistent temperature. View product details.