What Kind Of Sealant Would You Use On Cinder Block Walls?

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Steven Vakula Profile
Steven Vakula answered
My patents did but it was many years ago back in Michigan. I remember the basement flooded every spring when the snow melted and it was a real problem and they had to have the whole area around the home dug-up so the sides of the basement could be covered with tar which stopped the leaks. Not knowing where you live and the climate adds some difficulty but if you have a do it yourself place sometimes the people there are fairly knowledgeable and can give you some good advise. I live in Arizona and have a large pond that was leaking and needed to fix the leaks without draining the pond since I have a lot of fish that added to the complication  of repair. I knew there was a type of cement that cured in the water as I had watched shows about building bridges in deep water and knew that there were types of cement that worked in water, I found a product called Hydraulic Cement that is quite superior in regards to fixing cracks, sealing and fixing the leaks. This product works even when there was water leaking when applied. It is mixed with water like a plaster-of-paris and you need to apply it fairly quickly as it drys real fast and it works immediately. I don't know how much you would need but if you can find this product it is really good. To my understanding it actually improves the cement because it cures in wet as such it supposedly gives greater water proofing because of this characteristic.
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Moe Pence
Moe Pence commented
We had used the hydraulic cement when a hole was created in the wall after an exterior faucet and pipe were removed-- worked like a charm. We now have hairline cracks in the walls, and were told by our contractor to start repairing them and resealing the walls NOW. We're off to Home Depot store today to get the materials. Thank you for the information!
Jacquelyn Mathis Profile
Hi Moe, my husband said that you would use tar that will be under the ground and then you would fill the dirt in after that, but since you already have the foundation, he says you need to dig out two feet of soil around the house, seal with tar, and fill it back in. Hope this helps.
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Moe Pence
Moe Pence commented
Hi Tiggs! We don't have any leaks --yet, so were told to start doing the repairs and sealant before we do end up with them. I'm hoping we never have to do the tarring of the exterior, as CountVac and your husband have suggested (but now I won't forget that, if we do!).

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