![]() ![]() Moisture in the walls typically comes from two possible locations. My goal is to finish the basement, I was planning on using polyisocyanurate board to insulate the blocks. Should I seal up what I have stripped and spray the remaining painted wall with vinegar and hydrogen peroxide and coat with some zinsser mold and mildew paint? So now here I am with about 20 blocks stripped down to bare block and out 3 days of labor. Albeit a lot less mess created with the paint stripper. Yielding even more work than the previous method. With 4 applications and a lot of scraping, I got down to semi-bare block. The next test was to try some industrial paint stripper, thinking that would work faster and prevent dust. So I bought a HEPA filter for my shopvac a sucked up all the dust I could find. So great, now I have to deal with cleaning up lead based dust I just created. I counted 9 different coats of paint from the last 90 years, over 1/8" thick in total, ranging from lead based, oil based, to latex. Using my sample size of 10-12 blocks, I figured it would take me about 30-35 hours to strip one wall and about 5 hours of cleanup. I had an N-100/ Carbon respirator, Tyvek Suit, and Goggles.Īfter about 2 hours of stripping, I had 10-12 blocks stripped bare. I went back to Lowes and purchased a 4" diamond cup wheel to strip the paint off the walls, which made a huge dust mess. The wire wheel struggled to remove the well attached paint and only removed some areas that had bubbled out from hydrostatic pressure. ![]() I started with the internet suggested wire wheel. This seemed like the right way to handle the situation. Since no one is in the house for another couple of weeks, I decided to try and strip back a couple cinderblocks to bare block to see what we were dealing with and reseal the fresh block surface. Which seems to keep the basement around 35-40% relative humidity. I should mention we had the downspouts extended and no water enters the basement now. I would estimate the paint to be 15-30 days old at this point. We just bought our first house ( built in 1930) and noticed that the previous owners had painted over some mold or efflorescence (to hide it) that appears to now be growing through this "fresh" paint.
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