I found a low spot in the middle of my floating laminate floor over a concrete slab. When you step on the spot it sinks about 3/8 to 1/2 inch. The depressions is about 18 inches across. The areas outside the depression are solid. I want to fill in under the boards but don't want to pull up 12 rows of planks to get there. DO you have an idea how to solve the issue?
