The answer to 'how often to replace leak repair' is that there is no one-size-fits-all timeframe for replacing a leak repair. The frequency depends on several factors, including the severity of the leak, the quality of the original repair, and environmental conditions like weather and temperature. As a general guideline, smaller, less severe leaks may only need to be repaired every 5-10 years, while more extensive damage may require a full roof replacement every 15-20 years.
It's important to have a professional roofer inspect your roof regularly, at least once a year, to identify any issues early on. They can assess the condition of your roof and repairs and provide recommendations on whether a repair or replacement is needed. Ignoring a leak or attempting a DIY fix can lead to further damage and more costly repairs down the line.