I recently installed a floating engineered hardwood floor through my entire 1st floor (1300 sq ft). While installing, I ran into one area where I would have had to remove most of the floor in order to join the floors, so I cut off the tongue on one side of a small board and glue that side to the next board in order to fit the two sides together. Now, the board that was glued is starting to come up.

What is my best option to fix this?

- I've seen drill and glue, but am concerned about it sticking to the paper underneath and not the subfloor.
- I have plywood subfloors, but am concerned because everything I read says "do not nail" a floating floor.
- Pulling it all back up is not an option
- Ignoring it is not an option as it is in a high traffic area of the kitchen

The way to fasten the boards together would be to use epoxy glue, which will stick to the glue that has failed, and to the foam underneath. You should have used some formica under the joint in strips 2 inches square every 8 inches or so along the joint, with the foam cut out there, so there would not have been a bump. You did use a foam underlayment?