I recently bought a new spec home and the builder installed a very cheap carpet there. I decided to install a floating 5/8" thick engineered hardwood instead, and after it was installed, I realized that in a few narrow places, it was moving up/down due to the subfloor not being properly leveled (the builder did a very poor job in a lot of places).
I thought of two solutions for this:
- Shoot a nail with a nail gun in a few places on the floor.
- Drill a small hole in a few places, and drive a thin screw into the subfloor.
Obviously, I'd use wood putty so in both options nothing would be seen. I was considering option 2 because a nail is permanent, if something was to go wrong.
I am scared to do either option for two reasons. (1) what if the wood cracks? (2) does the hardwood need to expand?
I would appreciate any feedback to my concerns or any other ideas on how I can stop the floor from moving up and down.