Uneven spots

Q: I recently laid down some engineered flooring and I noticed in couple of places there are few uneven spots. The unevenness is only about 1mm (enough that you can feel it with your feet). Is there any way to fix this?

We had this problem in couple of spots when our builder built the home and they were able to fix it, but I was not around to see how they did it.

A: If this is a well manufactured product, the tongue and grooves should be perfect. There should not be play in the joints to allow unevenness of surface height. If you had a depression under the floor that left a hollow sound, you could drill a tiny hole and inject some adhesive designed just for this.