That crack filler my neighbor swore by was a total lie

Mike told me to use the cheap rubberized stuff from the dollar store on my driveway cracks, and after 3 days of rain it all washed out. Has anyone else had luck with a specific brand that actually stays put through a freeze?

2 comments

2 Comments

the_nina1mo ago

Honestly, I feel like nobody's talking about the real issue with those cheap rubberized fillers - they're not designed to bond with wet surfaces at all. You mentioned it washed out after 3 days of rain, but like, was the concrete actually dry when you put it in? Tbh, even the good stuff won't stick if there's any moisture trapped in the crack, and after rain that's almost impossible to tell without waiting a full sunny week. I've had way better luck using the sand-and-polymer stuff that you mix yourself, it's like $8 a bag at Home Depot and it actually hardens into a solid plug instead of just sitting on top. The rubberized ones are basically just fancy caulk, they're never gonna hold up to freeze-thaw cycles because they can't expand with the ice. Ngl, I think the real "lie" here isn't the brand but the whole concept of a cheap quick fix for driveway cracks.

daniel_martinez921mo ago

Know a guy who tried that rubberized stuff on his patio cracks last spring. He prepped everything perfect, waited a whole week of dry weather, and it still peeled up like old sunscreen after one freeze. @the_nina you're spot on about the moisture thing though, I've seen the same thing happen where you think it's dry but that concrete just holds onto dampness. The sand-and-polymer mix is the only thing that's ever worked for me too, it actually bonds in there like concrete instead of just sitting on top. People get impatient and want a quick tub to squeeze out, but that's exactly why driveways end up looking patchwork after a season.