There is a felt joint in the middle acrros my garage floor. It is fairly rotted and soaked with automotive fluid after years. I removed it all with a screw driver. Then used a 5/8" foam filler rod and silicone caulk to fill the gap. This fixed the cosmetics but now I was thinking maybe I did something bad, should I reinstalled a piece of new felt? Is the whole slab going to move and cause problems? The garage is 20 years old.
If I get a new piece of felt how do I get it in the joint properly?
Thanks ina dvance