Garage conversion question

[Cyclistbruce]

I'm in the middle of converting my attached garage, my plan is to use the back 2 thirds as a liveable room - this now has a door into the main house. The front third is going to be used as a store room, it currently has the garage door still in place.

I have put in all the internal walls, but am now thinking I should do away with the garage door and insulate the store room to make it 'liveable' under building regs.

So, two ideas; firstly leave the door in place, seal it and install insulation and stud behind it. Meaining it still looks like a garage from the outside but has a fully insulated wall. This is the easier option, but I think the BCO will prob say no on fire regs grounds.

The second option is to remove the door and build a wooden framed wall with cladding on the outside and a door, again insulated etc. If I go for this option, do you think I could put the sole plate straight onto the existing concrete slab, rather than building a dwarf wall? I want to leave it as much as possible looking like a garge and also want it to be easy to reconvert to a garage.

Final question, the BCO has asked that I put in 75mm of floor insulation, does anyone know of a product with a similar u value to Kingspan but is thinner?

Cheers

 

[freddiemercurystwin]

You can do your first option of leaving the door in place.

Untitled

• freddiemercurystwin
• 6 Jan 2013
• 1

Regarding the insulation a better alternative does not exist.

 

[Cyclistbruce]

Thanks, is there no issue with fire escape routes?

 

[freddiemercurystwin]

Maybe, I would be arguing as its only the third of a size of a garage it won't be used as anything other than a store room and the likelyhood of a fire starting in new room (which should have its own escape window/door) preventing you from escaping the store room was unlikely. A bit like an ensuite off a bedroom or a walk in wardrobe.