Granule loss on fiberglass shingles occurs when the small mineral particles that protect the shingles from UV rays, weather, and wear begin to shed. This can happen for several reasons, including natural aging, weather damage like hail or heavy winds, poor ventilation causing heat buildup, or manufacturing defects. Over time, granules fall off gradually and collect in gutters or at the base of the roof. You might notice bald spots on your shingles, a rough texture smoothing out, or granules in your rain gutters after storms. To check this yourself safely, use binoculars to inspect from the ground or climb a ladder carefully to look for exposed fiberglass mats or patches where granules have worn thin. Avoid walking on the roof too much, as this can cause more damage.
If you see extensive granule loss, it’s usually time to call a roofer, especially since this can shorten your roof’s lifespan and lead to leaks. A professional can assess whether the damage is from age or an underlying issue like poor ventilation or flashing problems. When talking to a contractor, ask if your roof still qualifies for the manufacturer’s warranty given the granule loss, and if they recommend a full replacement or spot repairs. Also, inquire about ventilation improvements or preventive options to avoid premature granule loss in the future. Understanding these points helps protect your investment without rushing into unnecessary repairs.