What is the best type of sealant I should get to fill the cracks between the slabs in the picture below?
I think these are concrete slabs that I have in my garden, and not sandstone, but I'm not sure.
What’s a suitable sealant for the garden slabs in the picture
sealant
Related Topic
- What’s the difference between “silicone sealant” and “mastic/MS-polymer sealant”
- Use polyurethane sealant with Plexiglas
- Electrical – Stud hole for Romex electrical wire filled with Green-glue acoustic sealant – Cause of concern
- Walls – Concrete floor brick wall gap leaking severely (garage above basement)
- Type of sealant for nails under asphalt shingles
- Sprayed foam sealant into window blind’s headrail, immobilizing it. Blinds are also screwed directly into frame. How to remove (has picture)
Best Answer
It appears that there is grout in place now with some caulking where it's cracked out. I'm going to guess that these bricks are set in a sand base? If so, then you'll never get the blocks stable enough to keep the grout from cracking.
Have you considered just removing the grout and applying some "paver sand" into the gaps? That's a lot more forgiving than grout and a lot less trouble to maintain.
Otherwise, you'll probably want to go ahead and re-grout this after removing the old and cracked parts. It will need to be updated regularly but I think the result will be better than just applying caulk or silicone sealer.