I was on a work site last week doing some taping and noticed a painter applying an oil base primer (Zinnser Cover Stain) to a wall that had wall paper on it. He removed most of the wall paper..but some remained on (small patches). The purpose of removing the wall paper was to prime the wall and put a skim coat of Sheet rock 45 on it. Paint would follow. As soon as the painter applied the primer, the pieces of wall paper that he left on started to bubble up...almost instant. Never have seen something like this before. This would have been great as a high school science project!! The walls were in pretty bad shape too as they still had some wall paper adhesive. So it made me wonder about a number of things.....
(1) Can you apply primer on to wall paper and follow it up with painting it???If the answer is yes, what kind of primer (Bin 123 bulls eye?)
(2) Why did the wall paper bubble? Was it due to the oil paint??
(3) Can you apply drywall compound to a surface (skimming it to make it smooth) that has wall paper on it and has been primed. Assume that the wall paper has not been removed?
(4) Finally. Let's say the wall paper was completely removed and the surface had some remaining wall paper adhesive on it. Can you apply a primer over the surface followed by dry wall compound (after primer drys!)
As always, thanks for your suggestions and education.
Zeebo
(1) Can you apply primer on to wall paper and follow it up with painting it???If the answer is yes, what kind of primer (Bin 123 bulls eye?)
(2) Why did the wall paper bubble? Was it due to the oil paint??
(3) Can you apply drywall compound to a surface (skimming it to make it smooth) that has wall paper on it and has been primed. Assume that the wall paper has not been removed?
(4) Finally. Let's say the wall paper was completely removed and the surface had some remaining wall paper adhesive on it. Can you apply a primer over the surface followed by dry wall compound (after primer drys!)
As always, thanks for your suggestions and education.
Zeebo