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.
How to lay a concrete floor with insulation.
Glue the sleepers down with foam board adhesive and use masonry nails to attach them to the concrete below the insulation.
1 to prepare for insulating the floor first evaluate the condition of the concrete.
When ceiling height is an issue.
How to lay insulation under a concrete floor slab and advice on target u values damp proof membranes and underfloor insulation boards.
Insulating a floor slab how to lay insulation under a concrete floor slab.
Also check the floor for smoothness and level.
Finally install a sub floor of 3 4 or 5 8 inch exterior grade plywood or osb panels nailing them to the sleepers.
We recommend to use a carpet underlay prior to a carpet being installed.
Get an understanding about the importance and what is involved in insulating a floor slab.
If you live in a cold climate then you re no stranger to cold concrete floors in the winter.
Insulation is laid on the concrete and covered with a screed.
If a vinyl or lino is being used we would advise the use of a plywood over the top of the floorfoam.
If you know you have issues with moisture tend to those problems before installing the insulation.
Before you lay your concrete floor you ll need to take a few things into consideration the first of which will be your building regulations.
Once your concrete floor has been covered with floorfoam next you can install your desired flooring.
Laying a concrete floor is a very labour intensive task and cannot be performed alone so ensure you have a few hands to help you before you begin.
Installing insulation prior to the pouring of a concrete slab floor improves the energy efficiency of the floor and makes it more comfortable.
If your concrete floor needs to be reinforced in areas which are likely to be heavily loaded such as garages then a metal mesh standing on plastic feet will be put down before the concrete is poured.
How to lay concrete with insulation.
Install your finished flooring of choice on top.
You may need to grind down significantly high spots to ensure an even surface.
There will be a damp proof membrane under the insulation and possibly a second membrane on top depending on the type of screed.
Typically 75 100mm of rigid.
Wood laminate flooring can be installed directly on top of floorfoam.