Garage Conversion Floor Insulation Thickness

That s right even your floor needs insulating.

Garage conversion floor insulation thickness.

The first thing to check is the construction of the wall as next time we will look at the best methods of insulating them. My understanding is that at minimum you can expect to add 100mm to the height either via a screed 50mm insulation 50mm or floating floor 50mm insulation 22mm chipboard. If there is a step up from the garage into the main part of the house assuming that the garage isn t detached then the insulation and new floor build up can be added to make the new rooms at the same height to the rest of the house. Insulating concrete garage floors begins with covering the entire floor with 6 mil polyethylene which will serve as a vapor barrier.

The floor can be finished with a layer of screed or a timber covering floating floor the exact specification of which will depend on the insulation material used beneath. Flat roofs are harder to insulate through diy and it s recommended that your find a professional to help with installation. In order to calculate the thickness we will require the exposed floor perimeter and the floor area. A screed is likely to need to be in the order of 75mm thick and should include a reinforcement mesh to prevent it cracking.

They will also expect taping of the joints in the celotex in the stud walls. Run the polyethylene up the sides of the walls 3 to 4 inches and secure to the walls with construction tape. You will need 2 layers of dpm in the floor one under the insulation and then one on top before your floor sheets go down. Guidance notes for garage conversions version 1 12 05 2009 new door opening.

Pitched roof insulation members area register to gain access to our comprehensive technical library which contains helpful specification tools including bim objects and much much more. Additionally the usual u value requirement for floors in conversion projects is 0 25 w m2k. Celotex ga4000 is our recommend board for use in a ground floor application such as this. The question is what to do about insulating the ground.

Before starting planning the conversion it is important to check what the existing construction of the garage is as the type and thickness of insulation you use will depend on this. This is for a garage conversion that will not be heated. A warm roof on the other hand has insulation added above the joists with a waterproofing layer added on top. Sometimes building control have a guideline brochure for garage conversions so have a look it may make your job a lot easier.

The other consideration for floor insulation is the level of the floor in relation to the rest of the house.