I've been renovating a bathroom and got to the point of painting the walls. The problem is that on the recent coat the paint was bubbling at several locations (see photos below) and pulling on the bubbles would simply peel off the paint. I took the paint back but the store person was insistent that it was a problem of the walls "because of a thin film of drywall dust". Frankly, that sounded like them simply trying to avoid taking the blame because (1) I thoroughly clean my walls with a table broom to get the sanding dust off before priming and (2) if that were the case, then every drywall application would have the same problem around the joints. Anyway, there is a problem for sure because if I simply get an area of the paint wet (and well someone wipe or scrubs their walls) then I can peel the whole thing down to the skim coat (see the last photo).
I think that the main problem is the primer that I used and if I redo it with oil-based primer then it should be good. I'm asking here if others have experienced this and what fixed it?
For context, this bathroom used to have 30+ years old wallpaper which I removed using hot water, a bit of white vinegar, and lots of elbow grease. As a result, the drywall had a lot of marks plus there were a few bigger repairs that I did, so I skim coated the whole wall with drywall compound. After sanding everything smooth, I scrubbed the walls top-to-bottom with table broom to make sure that there was no accumulation of drywall dust on the walls. Then I primed (all the paints these days says that they have primer but frankly I don't trust it). Then painted a first coat without noticeable issues. The bubbling showed up on the second coat. I used Valspar primer and paint.
I think that the main problem is the primer that I used and if I redo it with oil-based primer then it should be good. I'm asking here if others have experienced this and what fixed it?
For context, this bathroom used to have 30+ years old wallpaper which I removed using hot water, a bit of white vinegar, and lots of elbow grease. As a result, the drywall had a lot of marks plus there were a few bigger repairs that I did, so I skim coated the whole wall with drywall compound. After sanding everything smooth, I scrubbed the walls top-to-bottom with table broom to make sure that there was no accumulation of drywall dust on the walls. Then I primed (all the paints these days says that they have primer but frankly I don't trust it). Then painted a first coat without noticeable issues. The bubbling showed up on the second coat. I used Valspar primer and paint.