Wind damage is a subject of controversy. Many times when a homeowner experiences wind damage they do not realize it. The most common sign of wind damage is in the form of water stains on ceilings and walls. As the home owner looks where the damage is they may find that no shingles are missing, but in other spots they may find a shingle or two gone. The problem with unresolved wind damage is that it can be a breeding ground for mold.