concrete ceiling

Old 12-16-03, 07:08 AM
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cement ceiling

I live in a large apartment building built in the '60's. The kitchen ceiling has been in bad shape for years, so yesterday I removed the peeling paint and the loose (plaster or mud?), which lay about 1/8" to 1/4" over a cement slab. First, without seeing this stuff, can anyone tell me if this is most likely plaster or mud? (to me it looks like dried mud). Second, what do I use on the cement slab to build an even surface (about 10-15 sq. feet need to be finished). I would strongly prefer to use drywall compound if I have a choice of alternatives. Any other advice on how to proceed with this work would be gratefully received.

Last edited by neilnyc; 12-16-03 at 08:10 AM.
Old 12-16-03, 01:39 PM
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You probably scraped off plaster. You need to get all the loose debris off of the ceiling. Then I would prime the concrete with a good concrete primer/sealer. Then you can skim smooth with drywall mud. Three coats should do it.

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