My driveway has a few separate slabs (is this the right terminology?) and an animal has been digging in the gaps between two slabs. The gap is 1 - 1.5" wide. It looks like the rain is washing away the sand/dirt beneath because I can see open area.
What's my best course of action? I was planning on trying to fill the gaps with sand as best I could through the gap, and then seal the gap with something. Do I want to use something like a caulk or something more like a tar? Links would be great!
I would fill gaps with polymeric sand, then lightly water the joint lines (think 'mist' not spray). The sand will 'set' like concrete, but with some flexibility, so it shouldn't freeze/frost heave.
Be sure to follow directions about packing joint and cleaning loose sand up before misting.
This is pretty serious because the slabs can sink. I have a small one that chipmunks had a small home - getting in via the expansion cracks. It is down like 1/2 inch on one side where they were living. I used rodent pellets in the hole and killed them all. Then recovered with dirt and watered it down. It has stopped the sinking but still got me a little.
