We have been in our new home for about 7 months. We have hardwood floors on the entire first level. 3/4 inch red oak. Shortly after moving in we started having popping sounds when walking on some areas of flooring. Sometimes you could walk over an area and a few seconds later would hear popping sounds that travel across the area you walked on. The flooring guy came out and cut a larger relief on one wall and that seemed to help some. The popping has spread to every room since then. I am not sure what is going on, but concerned that the floor are coming loose from subfloor. Anyone have any suggestions or experienced the same issue?

How wide are the floor boards? How were they installed i.e. nailed down, glued, etc.? Brand new house..seven months old...when were the floors installed? Do you know the brand of the flooring? Was it prefinished or site finished? Do you know what the process was i.e. acclimation, moisture content of flooring? Where is the house located? Central heating? A/C?
Do you know what the subfloor is?

That time of the year for these kind of complaints. Subfloor is probably drying out, nails loosening.

I am in the Charlotte, NC area. The floors were site finished and laid around February/March of this year. The floors are red oak 3 1/2 inch wide, nailed down. It is laid over a crawlspace. Weyerhaeuser gold edge OSB subfloor. Wood was acclimated on site. No A/C during construction. Moisture content was checked when I first reported issue and was told that it was within limits.

You can feel the floor moving in some places. The installer is suggesting that they will be able to screw from crawlspace to pull floor tight again. They were going to try using a screw that goes in and breaks off and the filling with putty but my entire floor would have been covered in these holes.