Chuci

Do you happen to know the difference between the zinsser sprays vs the actual paint version. I've only got the spray at the mo but wondering if I should just buy a can of the proper stuff Using this one at the mo

Thanks both! You're both correct in that it's an old property. I can't be certain about the tobacco theory as I'm not sure what the previous owners did in that room.

Last year I suspected I had a leaky gutter as one of the rooms had damp coming through the walls. Had the wall redone, filled and painted as well as the gutter fixed. I'm still getting these weird yellow stains coming through. The other day I had just that wall repainted as every other wall is fine. I've just put the property back on the market so I just want it looking decent for now. Guy used zinsser bin primer and then my usual paint on top. All looked decent. Wake up next morning and I see a bit of yellow again. It's not rained so I don't know what it is This is what it looked like before I had it painted Today I bought some of the zinsser oil based cover stain spray and sprayed the tiny brown patches, let it dry for 2hrs and then painted over with my regular dulux paint. All looked OK but just now I can see a little bit more brown patches in a different area. Any idea what it is? Should I just get the paint version of cover stain and a roller and go over a large part of the wall again? Or is it something completely different. Worst is, I'm looking to sell the place so really don't want to have to smash the wall and incur a huge cost. Thanks in advance. I'm a complete rookie to decorating so appreciate the most idiot friendly answers