Ground Floor Slab Insulation Details

Insulating a solid ground floor below the ground bearing concrete slab can be done using either pir insulation boards or eps insulation boards.

Ground floor slab insulation details.

It helps make effective use of the thermal mass of the concrete slab rather than repeatedly warming it and allowing it to cool. Eps can be a cost effective alternative to pir for floor insulation and the same thermal performance can be achieved with increased thickness. If the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a polythene separating layer and the concrete slab. Submitted in 2016 for drc step 3 construction documentation review was an.

For the floors of industrial. Alternative solutions 4 and 5 for continuous insulation of on ground concrete floor slabs. The codes are silent about whether above grade slabs need to be insulated. Correct slab insulation detail 21.

These overall r values do not account for the heat sinking effect of concrete piers where they are included to support a slab footing from below. Check with manufacturer for approval for ground contact. Where insulation is positioned above the slab. These codes do not require any insulation for slabs that are more than 12 in.

Otherwise both codes require that slab on grade floors with a floor surface less than 12 in. 4 10 2012 5 floor surfaces less than 12 inches below grade shall be insulated. Depending on the use of the building the slab can then be finished ready for use or receive a screed suitable for a floor finish.