During the summer months of the year, there is a lot of humidity in the air. Your hardwood floor soaks up this humidity and expands. As the winter months roll around, and the heat is turned on, the floor dries out and starts to gap. There are a couple of tips we recommend to try and avoid this problem. Try to keep the room at a constant 45% humidity level using an air conditioner, humidifier, or a dehumidifier. Also, prior to installation, let your floor acclimate to its surroundings. Two weeks before the floor is to be laid, bring the flooring into the area where the floor is to be installed. Stack the flooring 3-4 bundles high leaving a 6″-7″ space between the stacks. This will allow air to circulate between the stacks and for your flooring to properly acclimate.