An oak floor that has been down for about 3-4 years has juust started to lift .
2 boards in the middle of the room, lifted from there batons, prerventing a door to open. Boards are 6" oak T&G nailed ( through the tongue ) on 3/4 batons which are screwed and plugged to concrete floor Could this prolonged warm weather have caused the shift and what is the best way to remidie this. TYIA