Internal Wall Insulation

Internal Wall Insulation involves fixing insulation to every bit of the inside of an external wall, leaving no gaps, taping insulation panels together, so the wall is no longer visible. Ideally the thickness of the insulation should be 60mm to 100mm at least. Rigid insulation boards are usually used for this type of insulation, alternatively a metal or timber 'stud' frame is attached to the wall and filled in with mineral wool fibre. Mineral wool insulation is less effective than rigid insulation boards so it should be at least 120mm thick. The newly insulated wall will then need plasterboarding and then plastering.

Insulating the wall will increase the thickness of the wall and make the room slightly smaller and this has implications for everything adjacent to the wall. Flooring, skirting boards, window and door frames, coving etc may all have to be removed and refitted. It's quite a lot of work and very disruptive in the room whilst its being done and hiring professionals can make it expensive. This will significantly reduce the amount of heat that is lost through that wall and that means you will use less heat and therefore produce less climate changing pollution.

Insulating the inside of a wall can make it more difficult to fix heavy items like cupboards to the wall. There are special fixings available to allow for insulated walls.