Exposed brick sealing?

@stevecym
Residential dehumidifiers are rated to remove 20 to 70 pints per 24 hours (commercial one run up to 300 ppd) . I was was recommending the higher end residential ones. They all have a humidistat and will go on and off as necessary. They also have timers and I was recommending not using the timer, but let the humidistat control it.

shahnandersen

in Renovation 4 years and 9 months ago

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shahnandersen

in Renovation 4 years and 9 months ago

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Your immediate plan makes sense. I would add one more immediate expense. Get a good high output dehumidifier. If there is a floor drain the water can go directly into the drain via gravity. If your sewer lateral is above cellar floor (no floor drain) you will need a dehumidifier with a built-in pump to get the water to drain level. Start running it now before you move in.

stevecym | 4 years and 9 months ago

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i mention a dehumidifier above as well. these seem to be something people are less familiar with here in the city as they often have central air and are not as low to the water table. on Long Island, a lot of people have them.

OP should not assume that the dehumidifier will become an constantly running appliance. i mean yes, if there is a lot of water there – like the cellar is sitting in it or during the rainy season perhaps. but it may be that OP can run it for a week, dry this mess out and then put it on for a couple hours a week or one entire day a month to maintain. we use one on Long Island and it is not something that has to be left on all the time. we do not even have it hooked up the way bobjbkn mentions but just empty the water catch as needed. i am not sure what bobjbkn means by high output (these eat electricity just like a window a/c unit; they have a compressor in them), but the ones we have always used (inc the one in my shop) have a one or one and a half gallon water catch. when it is really humid, running one of these machines for 2 4 hours or so will fill that catch and you will feel the difference in the space. to get that wall dry you will want to run it three or so days and i would direct the dry air coming out of the machine at it so it picks the moisture up as it passes. you will see a difference in 24 hours, easily.

nathanjoe755 | 4 years and 9 months ago

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bkgeorgian hahaha, I know, right? When I first posted to this thread I was like, “Just a little wet drywall no big. Just got to figure out how to treat it.” The next thing I know I have uncovered a coal chute, some other pipes, old rat poop, more drywall behind other drywall, more wet spots… …

It went from 0 to 90 real quick. I am still trying to overcome the shock. (I thought the biggest issue I would run into was that the subfloor in the bathroom was virtually non-existent last week)

Thanks for the vote of confidence, bobjbkln! I need it. We have a dehumidifier going right now and it has done an amazing job at wicking water out of the walls which is why I am holding onto the Stevecym theory that this isn’t as bad as originally imagined. We might rent a big one this weekend as we plan on pulling out the rest of the drywall this weekend. Our “fix-up” budget is getting smaller by the second.

cate | 4 years and 9 months ago

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This post has been very interesting. Take photos of the “drywall behind the drywall” if you can. That is, uh, suspicious. What do you mean the “subfloor in the bathroom is virtually non existent”?