by 3magnet »
Wed Apr 18, 2007 3:25 pm
Hi there,
I had the same problem when I removed my wallpaper. I have been informed that depending on the age of your house, the plaster used dried out to quick and thus shrinkage did/could occur. When you used your steamer, the steam expanded behing the cavity, thus causing it (plaster) to flake.
You will have to tap around the flaked areas and listen for a hollow sound. This means that there is still loose plaster which has detached form the base layer, but not flaked off. You will have to remove all of the loose plaster as priming it later will/could cause it to absorb the moisture and fall off.
Once all of the flaking plaster have been removed, you have to remove any dust etc. (wire brush). You should also remove any bits of remaining wallpaper by lightly sanding the area. Wash the wall with Sugar Soap and let dry. A bonding liquid should be applied before re-plastering. This will help the new plaster to better stick to the surface.
If you are unsure of how to do any of this i.e. plastering, get a professional to do so, but make sure to get good references first.