Ways to sort damp in single brick extension?

[dagoof]

I recently moved into a bungalow, where the majority of the house has cavity walls. However, there is an extended room at the back of the house which was built with a single skin of brick.

There's damp issues here and I'm wondering how best to address it, as well as possibly improving the thermal quality of the building.

I think building a cavity wall would be too expensive, but I'd seen a neighbour who got external insulation, which was roughcast over afterwards. Would this be the best solution for me or are there other options to look at?

 

[Deleted member 292770]

depends on the size . ewi is expensive .
may be cheaper and more insulated if you created a false wall insulated internally.

 

[dagoof]

Thanks, I did consider that but I thought going internal would be more expensive.
Also, we'd have to tear out the kitchen and I don't want to lose any more internal space.

It's 2 external walls, about 40 sqm coverage in total, any idea of cost?

 

[^woody^]

Look at any of the garage conversion threads.

 

[BarnabyT]

I'd render the outside and insulate the inside.

 

[Deleted member 292770]

Thanks, I did consider that but I thought going internal would be more expensive.
Also, we'd have to tear out the kitchen and I don't want to lose any more internal space.

It's 2 external walls, about 40 sqm coverage in total, any idea of cost?

Depends where you are. Start at £100/ mtr. prices increasing all the time.

 

[dagoof]

On further reading, it seems like exposure is an issue, I'm on the West Coast of Scotland, so not ideal - however, I've got damp issues just now, so at least this would give a fighting chance of resolving it.

I hadn't considered the roof though, and how that could be extended to cover the extra depth