What's the easiest fix here? Partition wall in garage

[ceepeebee]

I've got a third of an inherited garage as an office...Finally removed everything on the other side. The other side of this picture is my little office and this is taken from the "cold" side (front) of the garage. As you can see I've exposed the stud frame from the garage side, and was about to add insulation, however after a bit of research it seems a vapour control layer is needed 'on the room side' of the stud/plasterboard.

Again, as you can see, there's already a wall up, and I'm using it the other side currently. To do a VCL properly I'd need to take the room side partition wall down, VCL it, insulate and plaster board each side. I'd really rather minimise the amount of work, as well as disruption to my office.

My question is, are there any solutions that don't require me using a VCL separately, or are there any other suggestions? The last thing I want is to put some insulation in and then to have mould which will cause damage to the walls and/or ill health side effects etc etc. I could take it all down, but if there was a slightly more expensive way, but it saved me some effort, I'd opt for that (to frame the answers is all).

Thoughts?

 

[^woody^]

I can't see why a vapour check would be required.

 

[ceepeebee]

I can't see why a vapour check would be required.

Really? Can you tell me why?

From my side, I thought because the other side of the wall is going to be used, heated and then as such the warm air will be hitting the MUCH colder air on the garage side (the side you can see in the pic) that moisture will get caught in the insulation when I out it in and as such will breed mould and condensation the walls?

 

[^woody^]

Can you tell me why?

Because the condensation risk is none to minimal in that situation.

Insulate it as best you can - PIR (foil backed) board is twice as efficient as quilt for the same thickness (but will cost more), then board up the garage side. Use expanding foam and/or mastic to fill any gaps to prevent air leakage.

If you are insulating the wall, then you should do the same to the ceiling. And bear in mind that that door is a poor insulator, so don't go too mad on the walls and ceiling unless you are going to upgrade the door too.

 

[ceepeebee]

Because the condensation risk is none to minimal in that situation.

Insulate it as best you can - PIR (foil backed) board is twice as efficient as quilt for the same thickness (but will cost more), then board up the garage side. Use expanding foam and/or mastic to fill any gaps to prevent air leakage.

If you are insulating the wall, then you should do the same to the ceiling. And bear in mind that that door is a poor insulator, so don't go too mad on the walls and ceiling unless you are going to upgrade the door too.

So, and the fact I'm asking these questions might mean I shouldn't be doing it, but are you basically saying do:

Office Wall>VCL-backed insulation>garage wall.......and cross fingers?

 

[^woody^]

You can just insulate and board it. Skip the crossing fingers stage.

 

[ceepeebee]

Any specific blocks with the VCL on it you suggest?