If you strip away the cosmetics, a house is made up of the structure, roof, exterior envelope and the “systems” of the house. The “systems” are things like heating, plumbing, electrical and cooling. All components and systems eventually wear out. Fortunately, they don’t all wear out at the same time. Different components have different life cycles. Houses tend to settle into what you might call a “normal maintenance pattern”. THE 1% RULE When you consider the life cycle of ev