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On the other side of the wall... you can see where most of the plaster is drying but the point where the old damp originated is not / So ree, it's the salts coming through. Okay. I have read they will be hygroscopic and absorb and hold water, and gypsum is quite an absorbing material...

Hi Guys, Thanks for your responses. Okay, so from what I can understand although the bricks might be dry to touch they can still be damp (apparently 20-30% dampness before they may be damp to touch?). I had drilled into a couple of bricks (thin drill bit) earlier, before redoing the...

Hi folks, I've recently had a chemical DPC installed on an internal wall where there was damp. I was told rising damp. So chemical DPC installed. I was told to use a lime-sand plaster but used gypsum. I left the walls to dry for about a month and have now plastered over them only to find...