Please advise on sealing basement joint between wall and floor. During heavy rain, a small amount of water leaks at same joint. Should hairline cracks on basement floor be sealed? With what type of material?
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For that joint the usual suggestion is to widen it a bit, ideally wider at the back of the notch vs the front, and then fill with hydraulic cement.
Hairline cracks require no sealing and usually will "reject" sealing anyway.
shack,
You probably already know that the best place to deal with water is outside the house.
basements should not leak. sounds like you have a problem with your draintile, down spots or the grade of your yard.
You can buy a patching compound for horizontal joints that just pours into the joint to seal it. I have had good results with it, but I can't recall any brand names. As the previous poster suggested leak-proofing a basement starts outside the house. Good luck!
the best way to seal any crack in a concrete wall is to inject with epoxy. you could find a company to do it, but it's easy enough you can do it youself. if you google "epoxy injection" you'll get 319,000 hits. be warned, if you have water coming in between your wall and floor. you may have bigger problems then you think. if you seal this area you may build hydrostaic pressure and have water coming in somewhere else. its best to take a look at the big pitcure. where is the water coming from? can that be corrected? why isn't the drain tile taking water away? how can that be fixed?