What will happen if the wood floors are left in an unheated house?
When wood floors are deprived of air movement in an unheated home, it can cause problems. Sunlight through windows generates heat, lowers humidity and moisture vapor is released. When things cool off at night, humidity builds and the wood floors can cup. Another scenario is when the heat is left on 60 degrees and the outside is very cold. The heating system will run constantly. With no added moisture, the floors in this situation will most likely shrink. The solution is to leave a window ajar or have a neighbor air out the house periodically or add a humidifier to the heating unit. Repair any problems only after the floor has returned to normal.
