To get the longest life out of your roof and to prevent
damaging roof leaks, maintenance is required about every 5 years.
Why is that?
Due to the tremendous heat and the constant contraction and expansion caused by drastic temperature changes on the roof, rubber seals around the pvc pipe boots, sealers on nails, on vents, on chimneys, on flashings, etc. simply burn up, deteriorate, come loose, fall off, and create damaging roof leaks. Also nails work themselves up through the shingles and come up out of vent flashings.---Scheduled periodic roof maintenance should be done to prevent ceiling damage and unseen water damage in your walls, etc..
Low cost roof maintenance now can save you a lot of money later.
Most people don't realize it but you also have to do maintenance on your roof periodically. They may think that once a new roof is installed, you don't have to do anything else to it until it's time to replace it later. But like your car, a roof needs upkeep every so often to make it last as long as it's designed to.