The answer to 'how long does roof repair last' is that the lifespan of roof repairs can vary greatly, but most repairs will last between 5-15 years on average. The actual longevity depends on factors like the type of roof, the quality of the repair work, and the local climate and weather conditions.
For example, a simple patch on an asphalt shingle roof may only last 5-7 years before needing to be redone. But a more comprehensive roof restoration, like replacing damaged shingles and sealing leaks, can extend the life of an asphalt roof by 10-15 years. Metal roofs and tile roofs generally have repairs that last on the longer end of that spectrum, around 10-15 years on average.