2 posts / 0 new
Last post
Sealing a large basement crack.

HI there. I know that this is a reaccuring question but i would appreciate some help with my basement problem.
I have found a river flowing from under my drywall and removed it to find a massive crack, well not much of a crack but disintegrating concrete...there are crack leading off this one in the picture. someone in all there wisdom tried filling the cracks with expanding window foam?
How would i go about sealing these up...i could fill it with hydraulic cement, but would that just stop it right at the surface?
how would i fill the smaller cracks?
hope you guys can help me out here.

Re: Sealing a large basement crack.

Obviously, you'll first need to remove all of the expanding foam that was put in there. Next step is to chip out, in a "V" each crack. Fill with hydraulic and when dry, I recommend coating with at least 2 coats of Dryloc. This method worked for us. It's also a good idea to make sure any runoff from gutters, etc. is directed away from the foundation of the home. We left the areas in question open for a good month through lots of rain to make sure they were sealed before we re-hung drywall. Good luck!

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.