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waterproofing walls that are already painted!!!!!

waterproofing walls that are already painted!!!!!

Old 10-07-03, 12:33 PM
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waterproofing walls that are already painted!!!!!

hmmm, seems to me the previous owner had pained the cinder block in the basement for me. the problem is, I am not sure if it is drylocked or not. the walls are in great shape, but were built in 1939. I suppose i cant drylock over this? all i would be doing is waterproofing the paint correct? Also, my basement floor has been painted, but it is coming up in some areas. Of course, none of this was done by me, but i am not sure how to start the waterproofing process and cleaning process in my basement....

Old 10-07-03, 01:06 PM
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Below is an excerpt from Drylok,

As in any painting job, surface preparation is a critical step. Loose or broken mortar, dirt, dust and other foreign matter should always be removed before putting on a new coat of paint.
Before applying the waterproofer, clean the surface thoroughly. DRYLOK® works best when applied to a clean, bare masonry surface. It may be applied on a slightly damp surface but best results are obtained when applied over a dry surface. DRYLOK® should never be used on a wet surface.
Remove old paint by wire brushing, sandblasting or other suitable means. DRYLOK®Etch or muriatic acid should be used to rid the surface of efflorescence, white, crystal-like salt deposits that prevent the waterproofer from sticking to the surface. Holes should be patched with DRYLOK® Fast Plug® or a hydraulic cement.
Another area that may be overlooked as a source of water seepage is the floor/wall joint. Normally, when concrete floors cure, they shrink and pull away from the wall, allowing a space for water to enter. That's why it's necessary to seal all gaps between floor and walls with DRYLOK® Fast Plug®. Clean the area and wash with water prior to sealing.

Good Luck!
Old 10-08-03, 07:14 AM
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For some reason i didn't want to hear that....maybe its the work that is ahead of me, its going to be a mess!!!
Old 10-08-03, 07:40 AM
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Waterproofing with paint on the inside does not really work very well. If the basement is dry I would not worry about it. If it is wet, start on the outside and get the water away from the foundation. The only thing I use drylock for is as a general purpose anti-dusting. It can also be used to glue asbestos in place and to isolate finish layers from masonry.

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