My shop has 3/4" PT plywood for floor. For whatever reason, the contractor left gaps between each piece, 1/8" to 1/4" wide. Probably because this part of the house is in the 100 yr floor plain. Anyhow, there are 8 joints about 20' long that I want to fill in.
I have covered the gaps with duct tape but it is wearing out and I want to make a more permenant fix. I used one tube of caulk and it did not go too far. It may take another 15-20 tubes to finish.
I do have access to the floor underneath so I can put duct tape or 1/4" ply to close the gap. I am just looking for something that could be used to fill the gaps.
Right now, I can't find any large tubes of caulk, just the 10.1 oz tubes and cheapest is about $2/ea.