Hello
I have just finished removing 20 year old paneling, two layers of 30 year old ( or more) wallpaper, and came up against a badly gouged green painted wall, which the homeowner thinks is at least 60 years old. So I washed the walls with TSP to get rid of the wall paper glue, rinsed and towelled dry, then sanded every square inch, then damp mopped the walls. Then I used Sheetrock 45 to fill the gouges and skim the entire wall. I sanded, and skimmed again. Next day, I applied two light layers of latex primer.(behr)
Next day, the home owner was going to paint, but called me to complain that the walls were “all bubbly” I went to take a look, and it seems that areas of the compund that were very thin seem to have peeled from the wall. Only the thin areas peeled, the thicker areas seem OK, and where the primer was applied directly to the old paint, it is fine. It is as if the primer caused the compound to weaken its adhesion to the wall.
Any thoughts about the causes? Or any ideas on how to fix it, other than new drywal on top? I had a friend check the drywall for moisture with a good meter, no moisture problems. It happened equally on exterior and interior walls
Thanks,
stemreno
Replies
I recently had problems with Behr primer on freshly applied mud. It stuck to the paper of the drywall but peeled right off from the mud areas.
Had to peel off all that I could, sand and reprime with something like PVA Drywall primer.
“The richest genius, like the most fertile soil, when uncultivated, shoots up into the rankest weeds..” – Hume
Sounds like a classic case of residual wallpaper paste contamination. Even after repeated washings, even the slightest bit of residual paste (and there will always be some unless you can hit the walls with a garden hose) will cause any water based primer or paint to glob up into a bubbly, gloppy mess. The only way I've found to effectively deal with this (and I learned this here on BT) is to prime with alcohol (BIN) or oil based primer. Once you are primed and sealed, you can topcoat with latex as you wish.
2 things, first, I have no confidence in any of Behr's products. Used them a few times now ( they are cheap ) and have not been totally satisfied. Second, years ago, had same problem. Paint bubbled where I had used Durabond 45 on a bulkhead, only bubbled where the Durabond was exposed from sanding the joint compound. Solved the problem by re-applying good primer. Never did find out why the paint bubbled, but I guess its because the drying additives in the Durabond. Don't know for sure but maybe one of the resident geniuses here at BT will set us straight.
I used some Behr patio/brick sealer for my small brick patio/walkway. I wanted to give it a bit of a sheen to richen it up a bit...F$%$'d up the entire area. Milky looking, streaky - looks like crap! I followed every direction there was as to prep and application and ended up with a 1/2 full $20 container of crappy sealer and streaky milky bricks.Behr products are the Ryobi's and Black and Decker's of the chemical/paint world.JT
I recently steamed some wallpaper off the kitchen walls, and I knew I didn't get all the old glue off so I applied a good coat of kilz2 latex primer. There was not problem with the Sherwin Wms color coat going on smoothly."Put your creed in your deed." Emerson
"When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it." T. Roosevelt
I couldn't agree more about Behr products being complete crap.
I've always primed with Zinser 123 primer and haven't ever had any problems with adhesion or topcoating.
I primed one of my bathrooms with Behr.When I tried to apply next coat of paint, the primer peeled off. Not like it was dry and chipping, but like elastic.I tried several more times, and if i took a roller with paint or a wet sponge to it, it all would pull off.Tried BM Freash Start. Never looked back.
I've also had problems with elasticy paint and prime coming off in areas where it had no good reason for doing so.Never again will I use any paint from Home Depot.JT
Roger that!!!