What should I purchase to remove Drylok?


Old 08-26-18, 11:13 AM
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What should I purchase to remove Drylok?

I recently purchased what I thought to be clear drylok, but realized it was actually white drylok halfway through applying some. Now, I either have to choose to paint the entire exterior of the chimney white, or remove the drylok and apply a clear coat.

What industrial-grade solvent should I purchase to get rid of the drylok?
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Last edited by DryOats; 08-26-18 at 11:44 AM.
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Old 08-26-18, 11:27 AM
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Huh. Well at this point your only choice would be to use a chemical stripper. (Paint stripper). There are many brands to choose from, what you find will depend on where you shop. After you leave it sit a while you will likely need to scrub it with a wire brush or wire wheel on a drill. They also make wire strippers that go on a drill but that might be harsh on the brick and mortar.

It will probably require several applications as the paint may not want to come out of the texture.
Old 08-27-18, 04:16 AM
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I wish you luck. Part of what makes drylok work is it's ability to suck into the masonry. I'd start with a chemical stripper and as X stated it will take multiple coats. I'd probably remove the 1st coat of stripper with a pressure washer although care must be used not to damage the brick/mortar. I suspect you'd have to finish by scrubbing some sort of solvent with a brush. Denatured alcohol dissolves latex paints but I don't know how effective it would be on drylok.

almost forgot welcome to the forums!

Last edited by marksr; 08-27-18 at 05:14 AM. Reason: typo
Old 08-27-18, 04:46 AM
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You probably need to take a step back and think about this one.

Realize even it you are 95% effective in removing there is going to be a white stain on the brick.

Brick and mortar are very porous and some of that material is simply not going to come off and as noted depending on what is done to clean it up there is a chance that damage to the brick may occur.
Old 08-27-18, 05:02 AM
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As Marq says, you will always see the "stain". What I would do is clean and scrape as suggested, then try to "mix" a paint that comes close to matching the old brick. You may need a person who is "artsy/fartsy" type to come up with a good match. As it weathers over the years it become less and led noticeable. Worse case scenario is call brick layer to replace and repair affected brick.

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