Damp proofing before plastering

[RIbenaberry]

We need to get our bay window replastered, as we ripped off all the fake wooden cladding that had been there before. The guy we had round yesterday said the issue was that there was a risk of damp getting to the plasterboard because there would be only one brick between the board and the outside world. He said we would need to look at damp proofing it first.

So my question is, how do we do that? Is painting it internally with external damp proof stuff okay, or do we need to look at foil backed plasterboard or something even more substantial? Or do we need to go as far as a damp proof course? There will be gaps between the boards and the brick simply because of how it is built.

Any advice would be gratefully received - nothing is ever simple with this house!!

 

[ree]

1. Is this a two story bay?

2. How many sides to the bay?

3. Is the interior wall surface plasterboard fixed to studding? Or p/board dot and dabbed to brickwork?

4. How do you propose to cover the now demolished outside surface?

5. When you say damp proof course do you mean a membrane?

6. Do you have PVC frames in the bay?

You would do yourself a big favor by posting pics of the outside and the inside of the bay. It makes it much simpler to advise.

 

[stevethespreader]

How is he proposing to put the plasterboard up? Is there damp at the moment?

 

[joe-90]

Damp in bays comes from moist air from in your lifestyle condensing on the cold bay wall. Make the wall warm and you won't have a problem.

 

[RIbenaberry]

Sorry for the delay in coming back to this, and thank you for the replies!

I don't know how he plans to put the boards up, I didn't ask. It is a fiddly job because of the way the bricks are so they won't be stuck to the outside wall .

Iti's a one story bay, 3 sides (not a rectangle though, they are angled), The outside wall is still intact, and there is nothing but brick on the inside, I think the other walls in the room are proper plaster not plaster board. I have no idea what I mean by damp proof course - I actually thought they injected something into the wall?! And yes the frames are PVC

I will try to get a picture now and upload them from my phone.

Thank you very much!

 

[stevethespreader]

I would get yourself another spread you don't tell someone to damproof walls if there not damp sounds like he wants to d&d the boards