Signs your shingle roof may need repair
A missing shingle is the clearest sign, but watch for tabs that sit higher than the surrounding roof, dark lines where a shingle has creased, exposed nail heads, cracked ridge caps, and pieces collecting near the house after wind. Inside, a new stain or musty attic odor may point to water passing through the system.
Granules in gutters require context. Some shedding occurs as shingles age, and loose granules may also appear after installation. Bald patches, visible fiberglass mat, widespread curling, or heavy uneven loss are more concerning because they show the shingle surface is no longer weathering uniformly.
Lifted shingle
A broken seal may allow repeat lifting even when the tab falls back into place.
Creased mat
Wind can bend a shingle across its width and reduce its ability to resist future weather.
Raised nail
A backed-out fastener can push through the surface or hold a tab open.
Cracked ridge cap
Ridge pieces face sun and wind from both roof planes and may age differently from field shingles.

