Insulation Question

Celotex garage

whats the best way to celotex the internal garage(converting to bedroom)
build stud frame (3x2 treated) fix to floor and ceiling 25mm away from wall then celotex between and plasterboard


there is more then 1 way of doing this would just like to know which way other builders would do this.i have had 2 different building inspectors come out both with different ways to do it,so just though lets pick mybuilders brain

5 Answers

Best Answer

.......just sit back, relax and hire someone else to do it.

Answered 11th Dec 2011

Rebel Carpenter

Member since 24 Sep 2008

You do realise you are changing use from garage to habitable, which will require building regs.
All proposed works and materials will need to comply with regs.

In reply to your edited question, if you go for the stud frame, sit it on a course of bricks, then dpc, keep as much cavity as you can, when you fit celotex, fit some membrane, tape all joins then board.

Answered 11th Dec 2011


Member since 29 Oct 2008

Presumably you have no approved plans to follow and as such,cannot call out the building inspector for advice? You can find all the information you need on the internet.There are various ways of doing things and you will find what best suits your particular situation.It will explain damp proofing etc too and its vital you get this right.Brace yourself for some sarky comments too as there are a few people on here that think that they are gods gift to building and may comment on the fact that you are in the game but seek advice.If only we were REAL builders like them lol.

Answered 11th Dec 2011

Roc builders

Member since 25 Aug 2011

You would think that a builder with 15 years experience,over 30 if you count his workers would get their heads together and work this one out for themselves wouldn't you? :/

Answered 11th Dec 2011

carl melady

Member since 1 Jun 2008

You don't mention if the garage is single skin or a double with cavity.
If its a cavity wall why not use 50mm insulated plasterboards dot and dabbed
And over insulate the ceiling to meet u values.
If you use 3x2 stud work you will need a vapor barrier on the back of the stud work.
If you have had the inspector out just follow his advise so it complys with regs.

Answered 13th Dec 2011

Ch kitchens bedrooms bathroom

Member since 4 Jun 2011

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