While a lot of people think that a leaking roof needs to be replaced, this may not be the case unless the roof is old. Missing, cracked, broken, and curling shingles can be repaired and replaced to stop a leak, while older roofs or roofs with multiple leaks or widespread issues should be replaced.
While some small jobs can be tackled by DIY homeowners, major work or a roof replacement is a pretty complex process that requires training and thus should be left to the professionals. Professional roofing contractors goes to through training and certification by the manufacturer of the materials in order to obtain extended manufacturer warranty. The manufacturer won’t offer (or void) the warranty if the roof is repaired by a person he is not trained by the manufacturer.
There are a lot of factors that go into how long a roof will last. While most roofs have a warranty, this doesn’t mean that your roof will necessarily go this long without needing to be replaced. Some will wear out faster due to severe weather and environmental conditions, while others could last longer. Most roofs, however, are designed to last between 15 and 25 years; some types of slate and metal roofs could last longer.
There are a lot of factors that go into whether or not the hail is damaging to a roof. The age and condition of the roof can greatly impact how large a hail pellet needs to be. In general, however, pea and marble sized hailstones do not typically cause damage to a roof without high winds also being involved.