Arrraaaggghhh why is there salty bubbles forming on my walls

[Dickorydockwhatthe]

Moved into an 100 year old property which had been left vacant for 6 weeks during the exchange process. Anyway we have since moved in and the fire place wall basically has these bubbles forming which when pressed feels salty underneath. I've also noticed a new one in sons room above again part of chimney breast. Also under the kitchen window behind taps which seems to be spread. It's obviously rained alot here but not sure who I need to call or if I need to just drape off and replaster.

It's damp lifting the paint abs probably the plaster. It might just be because the house was vacant and unheated over winter or it maybe a leak in the chimney or rising damp.

Does the house have history of damp? Ours did, it had previously been treated and we got it redone under warranty.

Hmm not sure has husband dealt with the survey. I've just looked in the outside of the walls and the paint is peeling away working if the outside paint has blown causing the damp. When we initially moved in and put heating on the walls started almost sweating if that makes sense. After reading a bit a out damp I am a bit weary of damp proffing 😐

It’s damp.

If I remember correctly; The damp around a fireplace is really specific as the brick has absorbed mineral deposits from years and years of fires being lit in the fireplace.

I think you need a specialist plaster to stop it happening. But it was a while ago that we looked into this and I can’t remember the details.

Most importantly: find the source of the damp and fix it. Then go about replastering or damp proofing or redecorating after.

Is it rendered on the outside? Do you mean the paint is peeling away or the render is? Is it bubbling? (If you push it is it still firmly affixed to the wall?)

You need to have a look at the survey.

What's the ventilation like in your property? I believe buildings need to breathe and sometimes the steps taken to thoroughly insulate and, paradoxically, damp-proof a place can compromise that and trap moisture inside a building. It's possibly the case the exterior paint that was used was not appropriate and doesn't allow the building to breathe.

Damp in a chimney breast is often caused by the chimney needing repointing or having the caps replaced. It's quite an easy fix, albeit awkward because you often need scaffolding to get access.

If the house hasn't been heated for a while it can take a while to warm up. Run the heating, make sure all air vents are cleared, open windows.

Yes Red the outside paint is peeling away in some places on the outside. I try open windows and we have a ventilation vent in the ceiling of the hall stair well so guessing they have had a ventilation problem.