Preparing Old Sheet Rock walls for paint


Old 08-29-06, 07:37 AM
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Preparing Old Sheet Rock walls for paint

I have an older house, circa 1920, that has original Sheet Rock interior walls. Looks like, in those days, the walls were meant for wallpapering. Over the years, the paper has been stripped and then the walls painted. There are cracks at most of the joints, and it looks as though tape or other seam treatment was not used back in those days, perhaps because paper would cover them. Now the walls are painted and I want to repaint them, but would like to find a way to fix the cracks so they don't just show up again. Do I need to tape these joints, and if so, can that be done without it showing? I found something in a spray can that is supposed to seal cracks, but haven't tried it yet.
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Old 08-29-06, 10:14 AM
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Most cracks need to be taped to keep them from reoccuring. Usually 3 coats of mud are applied over ther tape with each one spreading out further. This usually keeps the joints from being seen. In some cases [after repairs made] it is best to skim coat the walls.

Always be aware that houses of that age often contain lead based paints.

I'm not aware of any spray can fix for drywall/plaster cracks.
Old 08-29-06, 12:49 PM
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Originally Posted by marksr
I'm not aware of any spray can fix for drywall/plaster cracks.
Me neither
Sounds like it needs a tape/joint compound (mud) application

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