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The lifespan of a roof patch depends on which materials you use and the severity of the damage. Temporary solutions like tarps or plastic sheets last a few weeks to a few months, while roofing tape or caulk may hold up for a year or two. Permanent patches using roofing cement, flashing, or replacement shingles can last several years as long as they're properly maintained. Regular inspections and touch-ups can extend the patch’s lifespan, but eventually, a full repair or replacement would be needed.

Metal roofs can rust, but steel is a material that holds up well to environmental factors, especially if it’s painted or galvanized. One of the main determining factors regarding rust is the environment the roof is in. Harsher environments with a lot of salt in the air will rust much more quickly than a steel or metal roof in a dry climate. Zinc-coated steel, called galvanized steel, is excellent at preventing rust from forming.

Salt is corrosive to metal, and when it’s mixed with air and water, that corrosion increases. While this compound can cause your car to rust, it takes years to cause damage. However, once you see rust, it’s probably well advanced. Winterize your car and avoid driving before or immediately after ice storms to reduce rock salt effects.

Regular cleaning, rust prevention treatments, and protective coatings extend lifespan and appearance.