Wear and tear from age is normal for any roof, but the passage of time can really do a number on the elements of the structure. Hot temperatures can cause materials to turn brittle or crack. Repeated exposure to strong sunshine can deteriorate the tar on the shingles. Too much rain can cause the seal of the valleys of the roof to erode. The flashing on the roof can start to decay over time, which can cause damage to the vents. The lifespan of a roof can vary drastically based on its original construction, so even a roof that’s only 15 years old could cause you some trouble.
While this might not seem like the biggest problem in your area, even the infrequent ice storms the roof endures can cause trouble for your roof. Ice dams form on the edges of the roof, which can ultimately affect the drainage of the roof. The extra weight from the water can cause the roof to leak and may even lead to widespread sagging if left for too long.
Construction workers and contractors can definitely make mistakes when they’re on the job. And with a structure as big and complex as a roof, it’s not always easy to spot that mistake until long after the roof is finished. If the sealant of the roof wasn’t properly applied, the planes of your roof can start to separate over time.