This depends on the shingles and the climate. Today’s shingles carry warranties ranging from 20 years to lifetime. Generally speaking, you can expect the shingle to last within 5 years of the warranty period. For example, you might expect a shingle with a 30 year warranty to have a serviceable life of 25 years. The harsher the climate, the shorter the lifespan of the shingle roof system. Our South Eastern Climate is tough on roofs due to our high humidity, warm temperatures, and temperature fluctuation. It is not uncommon for roofs in our area to fluctuate 60 degrees in a 12 hour time period. These drastic temperature changes create addition stress on the roof system.