Ground Floor Insulation Detail

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.

Ground floor insulation detail. Kingspan vips offer an ultra thin build up of just 26mm image credit. Jablite floor insulation is manufactured to a range of compressive strengths providing a solution for every type of ground floor application. 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. 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.

For low rise buildings on poor ground the floor slab can be designed as a raft to act as the foundation. 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. Ground bearing floors can include insulation either below or above the concrete slab depending on the choice of the designer. You can unsubscribe at any time and we ll never share.

See selecting the right grade of floor insulation for your product below. Ground floor insulation below concrete slab. Semi rigid insulation can often be friction fitted or held up by battens attached to the bottom of the joist. Boards or blankets of insulation can be fitted between the joists aim to fit at least 100mm rigid foam or 150mm blanket insulation.

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. Skip to main content. It helps make effective use of the thermal mass of the concrete slab rather than repeatedly warming it and allowing it to cool. Alternatively blanket insulation will need to be held up by netting and tacks stuck into the joists.

Installing floor insulation above the slab and below the screed. And for all other general enquiries contact us on the details below. No spam we promise. View our range of floor insulation here.