Garage wall

[Tjs]

Hi just a bit of advice. I'm looking to convert my garage into a games room, the garage wall is single brick width, I intend to stud the walls and insulate with celotex, my question is does it have to be 100mm celotex or 50mm. I know the thicker the better but can you get away with 50mm?

Thanks

 

[tony1851]

If you are doing it under Building Regs, then to comply with Part L, you'd be looking at 75 - 80mm Celotex.

If space is tight, you could use less, but would need to agree a thickness with the BCO, or alternatively offer to put extra insulation elsewhere, eg in the roof.

 

[Tjs]

Thank you. The space is about 5M x 3.2M so can do 100mm thick walls, didn't intend to go by regs as such but wanted to do the next best thing. Was also putting celotex in ceiling too.