Damp? Condesation? Mould

[brandy16]

Can someone give me advice I am decorating my sons first home I have painted white walls but in some of the rooms stains are showing I have tryed stain away a few different brands but they are still showing and in some rooms the paint wont seem to stick to the walls this is in the bathroom i have used bathroom paint?
there are also built in cupboards which seems to get damp how can i stop this or seal it in? again I tryed a mould blocker now a section has mould in i feel like its beating me there was a problem months ago on the roof but the problem was fixed but the stains and damp dont seem to have gone any advice would be greatly recieved

 

[JohnD]

//www.diynot.com/wiki/building:condensation_in_houses

 

[BobKbta]

I'd close all the doors and run heat, fans and a dehumidifier for a week or so to encourage evaporation.

Any loose paint areas should be stripped and spackled smooth.

Wait a few days for that to dry.

Buy a STAIN BLOCK PRIMER. Oil base works best.

Use a latex paint with mildewicide.