Repair of concrete blocks in basement

Old 05-25-01, 02:02 PM
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Posted this under Brick and Masonry, but it seems like messages aren't getting replies there, so thought I'd try here as well.

Due to water damage, the surface of some of the concrete blocks became "puffy;" if touched, your finger would poke right through it. I scraped this off, which left exposed sand. My husband would like to repair this himself, but is not sure how to go about it. Any ideas?
Old 05-28-01, 02:54 AM
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Probably the reason no one is answering is that there is something you are not telling us. Concrete blocks do not act in the manner you have described. Are the blocks painted, or coated. Or are they even concrete. How old are they? We need more info in order to help you. Good Luck
Old 05-28-01, 12:51 PM
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RE: repair of concrete blocks in basement

If they are not concrete, I am at a loss. They are concrete block according to both the appraisal and insepection reports. The house is 84 years old.

They are painted, but the blocks on that were damaged are just exposed sand now. The paint has all been scraped off.

FWIW we also have a painted brick chimney that has some water damage and has reacted the same way....

Please help!
Old 05-29-01, 03:37 AM
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only have one question do you live by an ocean or salt water?if you do i know what you have to do.seen the exact thing before but only like i said around salt air
Old 05-31-01, 12:13 PM
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No sea air here. Just Lake Michigan...

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