Damaged shingles cause leaks and lead to rotten sheathing, facia, and sometimes rafters.

As shingles age, they become brittle and can begin to break off even in a light wind.

When gutters are not functioning correctly, it can damage the roof and facia boards and foundations and lead to water intrusion.

These old ridge vents have several nails pulling out of decking and allowing water under shingles, causing soft spots and rot in the sheathing.