 On your home. High heat accompanied with humidity can do real damage to your house. Paul Hope is the home and garden editor with Consumer Reports. Wood framing, sheathing, roofing, doors, all those parts of our houses that we just sort of take for granted and expect to work a certain way can swell and contract with big changes and swings in humidity. Which has been seen during this heat wave. Another thing being noticed. A neighbor's window, for example, or a siding door can actually reflect light onto siding, in some cases causing it to melt.