Wood Floors Exposed to SunlightJust like our skin, wood surfaces are sensitive to ultraviolet light and heat, causing the wood to change color or develop an undesirable patina. For discoloration stains: Move area rugs periodically and draw curtains over large windows to avoid obvious, undesirable discolorations. Before leaving the house, make sure to close your shades or blinds; doing so not only will ensure that your house will be cooler when you return, but will help protect your wood floors from UV damage. Stay away from: Continued and direct sunlight exposure. To counter daily and constant UV damage, regularly shift your area rugs and furniture in the exposed areas so that your flooring can age evenly throughout the year. This is one of the easiest, most cost-effective ways to help your floors keep their character and appeal.