It was either or both.. You never want to "attach" the floating floor down. And you basicaly did when you secured the cabinets down. Plus the caulk doesn t allow the floor to move, expand and contract when you applied the caulk. Caulk won t allow the floor to move as much as its designed to..

Any questions you can e mail me through my avatar. I ve attended several installation seminars as well as installed a couple 100,000 s/f. GL

I used caulk to fill in the expansion gaps but then I drilled 3 holes in the floating floor boards to screw down a cabnent,now heading towards winter now it is buckling...why? was it just the screws or the caulking too? thank you