If self leveling is available try that first
Got this product to recaulk expansion joints that were felt material that had fallen apart. Cleaned out the old stuff. Followed the directions to apply only 1/2 deep and started to caulk. This was a tough job since I knew it was non-self leveling, but did not know it would flow like cold molasses. Had to be more of an artist to get a smooth looking job without touching the product with anything but the caulk tube nozzle. Anything else stuck in this material would create a mess. I would do it again - and use the same material. Works well and has nice battleship grey color.
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