Hi all,
My first post here...
I am taking my ceilings back to smooth. The house is 1926. I took the texture off my living room ceiling using a drywall sander (rented the Porter Cable). It took it down to sort of a knock-down texture. The current surface texture is joint compound of some type over top of plaster, or perhaps even over old paint?
Last night I tested skim coating in a small area. I applied a paper thin skim coat--just enough to fill the low spots. And within 2 hours I saw bubbles forming, about 1-2 inches in diameter. Full disclosure, I forgot to wipe down the ceiling first. So I am going to wipe it down and do another small test area and see if that does it. But I am posting here because I wonder if I am doing this right...
This happened in the dining room, too, last week. But I was not skim coating in there--just painting. And I did wipe it down first. (The dining room was smooth already--an existing skim coat over the plaster. There were small cracks--1/8th or 1/4 inch-- I did not notice and when the paint got under that old skim coat those bubbles showed up. That was the dining room.)
Now in the living room, the knock-down texture makes it impossible to see if there are the same cracks.
I guess my question is did my skim coat technique somehow cause this because it was too thin? Should I put on a thicker coat, such as 1/6th inch or 1/32nd inch? Everywhere I read it talks about 2 or 3 coats and sanding. But why can't I just put on one super thin coat and sand and paint?
Sorry for the scattered post.
Thanks,
Jerry
My first post here...
I am taking my ceilings back to smooth. The house is 1926. I took the texture off my living room ceiling using a drywall sander (rented the Porter Cable). It took it down to sort of a knock-down texture. The current surface texture is joint compound of some type over top of plaster, or perhaps even over old paint?
Last night I tested skim coating in a small area. I applied a paper thin skim coat--just enough to fill the low spots. And within 2 hours I saw bubbles forming, about 1-2 inches in diameter. Full disclosure, I forgot to wipe down the ceiling first. So I am going to wipe it down and do another small test area and see if that does it. But I am posting here because I wonder if I am doing this right...
This happened in the dining room, too, last week. But I was not skim coating in there--just painting. And I did wipe it down first. (The dining room was smooth already--an existing skim coat over the plaster. There were small cracks--1/8th or 1/4 inch-- I did not notice and when the paint got under that old skim coat those bubbles showed up. That was the dining room.)
Now in the living room, the knock-down texture makes it impossible to see if there are the same cracks.
I guess my question is did my skim coat technique somehow cause this because it was too thin? Should I put on a thicker coat, such as 1/6th inch or 1/32nd inch? Everywhere I read it talks about 2 or 3 coats and sanding. But why can't I just put on one super thin coat and sand and paint?
Sorry for the scattered post.
Thanks,
Jerry
