The answer to 'how long does leak repair last' is that the lifespan of a roof leak repair can vary greatly, typically ranging from 1-10 years. The longevity of a leak repair depends on factors like the severity of the leak, the method of repair, and the overall condition of the roof.
For minor leaks that are promptly repaired using sealants or small patch repairs, the fix may last 1-5 years before needing additional maintenance. More extensive repairs like replacing damaged flashing or shingles can extend the lifespan to 5-10 years, especially on roofs that are relatively new. However, if the underlying roof structure is worn or the leak was caused by a larger issue, the repair may only provide a temporary solution.