JKW 0 Posted January 5 Report Share Posted January 5 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 Quote Link to post Share on other sites
Jim Katen 153 Posted January 5 Report Share Posted January 5 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. Quote Link to post Share on other sites
JKW 0 Posted January 5 Author Report Share Posted January 5 Thank you for your reply. I will look into that. Quote Link to post Share on other sites
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