Aired before installed

Q: Does pre finished 3/4 – 2 1/4 birch wood have to be “aired” in the house before being installed. If yes, how long? Individually or just open the cardboard box on the ends?

A: All flooring should be acclimated to it’s new environment 3-5 days before installation begins. Yes, open the box ends. I am sure I have read someplace to crack open all bundles/boxes of wood etc., but in practical terms that is impossible in most homes. Set the wood in the rooms where it will be installed, but not in front of operating heat vents. Make sure to check the moisture content of the sub floor and reference that to the hardwood being installed. There shouldn’t be a difference of more than 4%.