Six signs your roof is done.

When shingles lose their protective granules, the fiberglass mat underneath catches the light and the roof literally glitters. If your roof twinkles at noon, it's telling you it's at the end of its life.

Those dark vertical streaks are Gloeocapsa magma - an airborne algae that feeds on limestone filler in shingles. It doesn't just look bad; it holds moisture against the shingle and shortens its life.

Moss lifts shingles as it grows, letting water in underneath. Once it's established, spraying won't save the roof - it just hides the damage that's already there.

A single missing shingle is a leak waiting to happen. Curled or cupped shingles mean the mat has dried out and lost its seal - expect wind to take more.

When you can see the pale fiberglass mat under the color layer, the shingle is done protecting your home. This is not a repair moment - it's a replacement moment.

High winds break the seal between shingle courses; hail bruises them and knocks off granules. Damage is often invisible from the ground but obvious on a proper inspection.