Ground Floor Insulation Detail

It helps make effective use of the thermal mass of the concrete slab rather than repeatedly warming it and allowing it to cool.

Ground floor insulation detail.

This insulation strip should be the full depth of the concrete slab and the top edge should be level with the top of the floor screed. Thermal insulation is usually installed below the floor slab in buildings featuring continuous low level heating. The ground floor beneath a house is generally warmer than the air around it and so it would perhaps be third on your list of priorities behind walls and roofs. Alternatively blanket insulation will need to be held up by netting and tacks stuck into the joists.

Ground bearing floors can include insulation either below or above the concrete slab depending on the choice of the designer. Unbuildable solution assumed by nathers for continuous insulation of on ground concrete floor slabs. Ground floor insulation below concrete slab. Kingspan vips offer an ultra thin build up of just 26mm image credit.

Semi rigid insulation can often be friction fitted or held up by battens attached to the bottom of the joist. For perimeter edge insulation fit a continuous vertical strip of quinn therm qf insulation boards at least 25mm thick around the floor perimeter against the walls to avoid heat loss through thermal bridging. Boards or blankets of insulation can be fitted between the joists aim to fit at least 100mm rigid foam or 150mm blanket insulation. View our range of floor insulation here.

These overall r values of slabs as constructed do not allow for thermal bridging caused by discontinuities in compressible extruded polystyrene xps insulation as may be necessary where the slab underside bears on concrete. No spam we promise. Exposed wood framed floor insulation insulating the exposed floor can make the space more comfortable reduce the incidence of frozen pipes help stop mold problems and help save on overall energy costs. For low rise buildings on poor ground the floor slab can be designed as a raft to act as the foundation.

Skip to main content. Jablite floor insulation is manufactured to a range of compressive strengths providing a solution for every type of ground floor application. While celotex pir boards have a good compressive strength they cannot be laid below a raft slab and take the structural load of the building. See selecting the right grade of floor insulation for your product below.