Boarding single skin wall in porch

Hi everyone,

In the process of renovating the hallway and porch area, ripped out the poorly constructed internal wall and door, will be replacing wall and fitting external grade door so no building regs to worry out. (Was thinking of having open plan but too much of a fuss and already small so can’t lose anymore space with insulation etc).

My question is, one of the walls is single skin, I have removed the existing wood covering and was planning on boarding over, will it be sufficient to dot and dab/plasterboard adhesive foam?
Bearing in mind there isn’t a lot of room to work with as you can see in the photo.

As there will only be shoes stored in there, shouldn’t be any damp problems?

Thanks in advance.

i wouldnt bond a plasterboard to an external single skin.
it may look dry but theres no guarantee.
id batten it with 20mm battens and dpc behind them , then board it with a vapour board.

Yes Benny idea the best and use treated batons like roofing ones. I'd conduit that cabling too before you cover the walls and sort the floor.

You could possible put an outer skin wall on the porch if you wanted open plan.

Simplar to benny, but I would add insulation.
25mm battons, filled with 25mm of PIR insulation (I know thin but will reduce cold spots and possible surface condensation.
And PIR insulation in that roof space.
SFK
.