Raised or Bubbling Hardwood flooring
We recently got prefininshed bamboo hardwood flooring installed in March. When it was installed not every row of the flooring was nailed, only every other row was nailed. Now I think the floor is expanding and the rows that were not nailed are starting to raise in certain areas. So when you step on that area its like a bubble and it goes down and up as you apply and release pressure. How can we fix this without having to put nails in the areas where there are bubbles.