JKW Posted January 5, 2021 Report Share Posted January 5, 2021 Hello. I have a 3 inch gap between my house and yard, which runs along the width of the house, under my deck. Under my deck is a lot of gravel and dirt. I noticed there was previous water damage from the previous owners time and it seems to be the location in the basement of efflorescence. Is there something i can pour in the gap to stop the rain and water from snow melting continuously getting down there. Many Thanks. JW Link to comment Share on other sites More sharing options...
Jim Katen Posted January 5, 2021 Report Share Posted January 5, 2021 How about bentonite cat litter? When dry, it'll flow like sand all the way to the bottom of the void. Once it gets wet, it'll swell up and serve as a decent water barrier. Link to comment Share on other sites More sharing options...
JKW Posted January 5, 2021 Author Report Share Posted January 5, 2021 Thank you for your reply. I will look into that. Link to comment Share on other sites More sharing options...
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