Single brick building needs cavity wall installed

CharliesBoy

The previous occupiers of the property had a tandem garage and decided to brick it up near the middle and turn the back half into a Utility room. The trouble is they left it the original garage construction of single brick! As you can imagine it is cold and echoes rotten even with several cupboards in there. I now want to correct this and was wondering if anyone could advise me the best thing to do.

I thought it could have a stud wall put up and insulated with thick therm block insulation slabs and then plaster boarded and finally skimmed. If this is the case i am happy to do the work myself and then get a plasterer in. But to be honest i need advice.

Thanks :eek:

diable

Plasterboard with I believe a 2" polystyrene backing should insulate it.

phill99

I have done a few garage conversions, and the way you're proposing to do it is acceptable to building controll. If you want it to be passed by BCD' you need to ask them what their insulation requirements are. Kingspan or cellotex is normally the preferred option.

budgetdiyer

Polystrene is not a very good insulating product! You can get plasterboard pre-fitted / backed with celoex, so that would be simple and easy to install.

cyclonebri1

Echo the kingspan or celoex as much the better insulator, or you could, if you have the space double up on the poly so you have 4" instead of 2.
If you actually built the studding away from the wall and did as above you could then ensure the ist layer fitted behind the studding creating an additional thermal break.

I'm guessing that 2" kingspan is more expensive than 4" poly.