After seeing a local TV news reporter promoting the use of pipe insulation as a cure for frozen pipes, I thought I should address the issue. Pipe insulation, if used improperly, can make things much worse! For instance, pipes too close to outside walls that need extra warmth should not be enclosed in insulation as the insulation will keep the warmth of the home from reaching the pipe. Instead, insulate the space between the wall and the pipe. Be sure to seal any air leaks thoroughly. Additionally, pipes under the house will not benefit from insulation unless they are heat taped. The use of heat tape should be a last resort because it can be a fire hazard. If possible, insulate the outer walls of a crawlspace and seal all air leaks. The heat that radiates down through the floor will keep the pipes from freezing. Remember, insulation is a double edge sword that can keep pipes cold as well as warm. One real use for pipe insulation is to keep the hot water warm or cold water cold. — David Nequette
