Portland, OR - Summertime sweat happens, especially in areas of high humidity, but damp, moist home interiors are a sign of a potentially serious problem. Most of these problems can be traced to the roof or attic, but the exact causes can be the subject of misinformation or misconceptions. In its mission to educate consumers and contractors about sound roofing design, especially in the case of metal systems, the Metal Roofing Alliance tackles some of these humidity myths below.