Granule loss is surface wear that can be cosmetic or age-related. Bruising is a soft spot where hail has fractured the fiberglass mat beneath the granules. Mat damage is the fracture itself — functional damage that shortens shingle life and leads to leaks. The distinction determines whether a roof needs repair, replacement, or nothing at all.
Granule Loss
Granules protect the asphalt from UV. Some loss is normal aging; concentrated loss in impact marks after a hail event tells a different story. Context matters: fresh impact marks expose black asphalt, while age-related loss is even and gradual.
Bruising
Press a hail impact and it may feel soft, like a bruise on an apple. That softness indicates the mat beneath has fractured even though the shingle looks intact. Bruised shingles deteriorate at the impact points and fail early.
Mat Damage
The fiberglass mat is the shingle’s structural core. Fractures — visible as cracks on the back of a lifted shingle or found in lab analysis — are functional damage by any standard.
Our inspections photograph and document which category your roof’s damage falls into. See hail damage restoration, our repair vs. replacement guide, or schedule a free inspection.
Frequently Asked Questions
Is granule loss always storm damage?
No. Granule loss can be normal aging. Fresh, concentrated loss at impact points after a documented hail event is what suggests storm-related damage.
Can bruising be seen from the ground?
Almost never. Bruising is found by close inspection on the roof — one reason ground-level opinions about hail damage are unreliable.
Does cosmetic damage ever matter?
It can affect appearance and resale even when function isn’t compromised. We document conditions accurately either way so you can make an informed decision.