On the other hand if you are laying insulation on top of the existing slab than you will need to make sure that there are no construction elements getting in the way such as skirting boards or ceiling heights for instance.
Thermal insulation over concrete floor.
However i think by far the best option is one that offers complete insulation from the ground.
When demolishing the existing finishes with the aim to better waterproof the concrete from the interior i discovered mould on the concrete walls and floor.
Insulation below the slab suits continuous low level heating gradually warming the thermal mass of the concrete and sustaining it at a consistent temperature.
1 of high performance foam insulation helps keep floors warm and free of condensation.
The math is pretty simple the thicker the concrete floor insulation material the deeper the slab will have to be.
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.
If your concrete floor is for industrial or heavy duty applications then any insulation you use needs to have a high compressive strength to take the weight of whatever is above.
Bulletin number 552 edge insulation of concrete floor slabs from branz outlines the accepted solutions for installing edge insulation or a thermal break between the slab and the perimeter wall.
There are two ways to handle insulating concrete floors.
There is no organic material for mold to grow on and the material provides a warm dry surface for your finished flooring.
In this scenario a rigid foam insulation is usual and as you d want the same u value in the roof we need the same thickness of insulation 180mm.
Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient.
You can attach wood sleepers to the floor fill the gaps with rigid foam insulation and then apply your finish flooring.
Thermaldry insulated floor decking is made from an inorganic magnesium oxide board.
Typically the insulation would be situated below the slab and below the damp proof membrane for heavy duty use whilst normal domestic buildings would have a.
Or as demonstrated here you can cover the slab with rigid foam insulation add two layers of plywood and then add the finish flooring.
The floor was carpet installed over thin poly likely 3 4mil and the walls were 2x4 fibreglass batt insulated with the same thin poly over them.