Why should you maintain your roof?
Everyday your roof is exposed to sun, rain, wind and snow. This wear-and-tear slowly ages your roof membrane until its service life ends. If you can get your roof to last a few extra years that much more money that can be saved for other expenditures. A roof doesn’t need to be fed or exercised, but it does need regular check-up’s in the form of regular inspections, repair and cleanings.
What benefit is there in maintaining your roof? Studies have shown that a roof not regularly maintained will only last about half of their expected service life.
You may believe that because you have a warranty on your roof that you are covered but almost all manufacturers of roofing materials state specifically in their warranty that your warranty is void if the roof is not maintained. If you are unable to show that the roof has been properly and regularly maintained, your warranty could be void. You should inspect your roof at least twice a year to make sure that it is in good operating condition to maintain your warranty and to extend the life of the shingles. If you are uncomfortable with getting on the roof to inspect it, I recommend that you get a home inspection company to take a look at your roof. If you were to call in a roofing contractor that makes a living on installing roofs there is a chance that they will try to tell you that you are in need of a roof replacement even though that may not be the case.
When maintained and kept free of algae, moss and lichen you should expect the roof to last 30 – 40 years.