Garage conversion wall design

[DIYMike]

Hi, I am doing a conversion and I'm unsure how to do new internal skin block / brickwork, Should it join onto existing walls or be kind of floating? It would obviously have wall ties to outer skin which would be using wall starters. Please see diagram.

scan_250708-093100.pdf

[Redbeard]

The sketch shows no insulation to the exposed side wall. Is this the intention?

[DIYMike]

Sorry if my sketch isn't clear, yes I was intending to have insulation on all four walls. Because the garage is so narrow I was just going to fix insulation with plasterboard already stuck on it (I don't know what it's called) straight onto the long side walls.

[Nickfromwales]

3 hours ago, DIYMike said:

Hi, I am doing a conversion and I'm unsure how to do new internal skin block / brickwork, Should it join onto existing walls or be kind of floating? It would obviously have wall ties to outer skin which would be using wall starters. Please see diagram.

scan_250708-093100.pdf 314.36 kB · 7 downloads

Why not do the internal structure in timber frame? The brickwork connecting to the outside wall will be a huge cold bridge. 

[DIYMike]

Thanks NickfromWales that sounds like a good idea. Unfortunately for me (and I was trying to avoid explaining in detail) I have already built the walls. after finishing the front, I sat down to look at my handiwork and came to the same conclusion, I'd just made a huge cold bridge. So now I was thinking, what if I cut back 100mm off the ends of the internal skin and inserted / extended the long wall insulation. Do you think that would get through building control?