Is it rising damp or just the house drying out?
Did you have a new damp course fitted? Or did you just take off the old plaster and go over it with plasterboard? If you did not have a damp course put in, it could be that the house is damp and that the parts that are showing through are where it is penetrating. Was the plaster damp before you removed it from the walls prior to putting on the plasterboard? I would give it a week and then have a look again. If it is still damp, chances are you will need to get a complete course done as dry lining which is what you have done by putting plasterboard on, will not hold back the damp. Good luck. 🙂 Sadly you were misinformed! If the house has damp, it needs a damp proof course. Plasterboard over it will not stop damp, it will come right back through. I have been a project manager for 15 years and I promise you, if you have damp, you need to go back to whoever informed you incorrectly and also employ a damp proofing company – who will give you a 25year certificate on completion incase it com
