Hi, I'd really appreciate advice on this:
I live in a c1900s house with cavity walls. We have emptied the cavities and shifted the rubble from under the floor. There is an old damp course plus we have injected both skins a couple of years ago. The interior has been redecorated and a couple of areas have been reskimned. The problem we have is that we have various patches where the paint is coming away from the walls as a chalky residue. One entire mainly internal small wall is affected, plus various other small patches of new and old plaster. Does this sound like hygroscopic salts as my builder friend suggests. And, if so, is there any less drastic solution than removing all the plaster in these areas and replacing with salt-resistant(?) plaster. We are on a tight schedule and need to rent the house out for a couple of years, so if there is a short-term solution it would be a massive help.
Thanks in advance!
PS I'm not very good with trade abbreviations, just a keen DIYer!
I live in a c1900s house with cavity walls. We have emptied the cavities and shifted the rubble from under the floor. There is an old damp course plus we have injected both skins a couple of years ago. The interior has been redecorated and a couple of areas have been reskimned. The problem we have is that we have various patches where the paint is coming away from the walls as a chalky residue. One entire mainly internal small wall is affected, plus various other small patches of new and old plaster. Does this sound like hygroscopic salts as my builder friend suggests. And, if so, is there any less drastic solution than removing all the plaster in these areas and replacing with salt-resistant(?) plaster. We are on a tight schedule and need to rent the house out for a couple of years, so if there is a short-term solution it would be a massive help.
Thanks in advance!
PS I'm not very good with trade abbreviations, just a keen DIYer!