Q: Can I store hardwood flooring in a cold house?
A: Sure. Just make sure when the time comes to install it that the rooms are at living conditions with 4% or less moisture difference between the sub floor and hardwood. Always a good idea to check the moisture content in the flooring before installing it too.
I think I would put a couple of sleepers on the floor and lay the bundles across them. If there is any chance of moisture coming from below lay down a sheet of plastic first.by