Knoxville homeowners told to watch for shingle granules in gutters

Tony’s Roofs is warning Knoxville-area homeowners that dark granules in gutters can be a normal part of asphalt shingle aging, but a sudden increase may point to storm damage or roof deterioration. The guidance comes as seasonal weather shifts make roof checks more important across East Tennessee.

Why it matters: - Shingle granules protect asphalt roofs from sun and weather, so unusual loss can reduce a roof’s ability to hold up over time. - Knoxville homes face heat, humidity, rain, thunderstorms, wind, hail, freezing temperatures and sharp temperature swings, which can accelerate roof wear. - Catching granule loss early can give homeowners more repair options before a leak turns into a larger expense.

What happened: - Tony’s Roofs in Knoxville advised homeowners to pay attention to granules collecting in gutters and at downspouts during fall cleanup. - Jacqueline Lane, owner and operator of Tony’s Roofs, said homeowners often mistake the material for black sand. - Lane said a small amount of granule loss is normal, but a sudden increase can signal a roof that needs a closer look.

The details: - Asphalt shingles use mineral granules as a protective surface layer that adds color and texture. - New roofs can shed loose granules during the first few rain events after installation. - Older shingles naturally lose granules as they age. - Warning signs can include bald or dark spots, curling, cracking, missing shingles, exposed asphalt and piles of granules near downspouts. - Heavy granule loss after hail or high winds can also justify an inspection. - Lane warned that pressure washing can strip protective granules and damage asphalt shingles. - Tony’s Roofs said roof cleaning should match the roofing material. - The company said granule loss does not automatically mean a full replacement is needed. - Possible outcomes include maintenance, repair, roof rejuvenation or replacement, depending on age, condition and the amount of deterioration. - Localized damage may be repairable. - Aging asphalt roofs that remain structurally sound may qualify for rejuvenation. - Widespread granule loss paired with brittle or cracked shingles can make replacement the more practical long-term choice.

Between the lines: - The message is less about gutters than about using them as an early warning system for roof health. - Tony’s Roofs is steering homeowners away from assuming the worst while also warning against ignoring a pattern that changes quickly. - The timing fits seasonal cleanup, when homeowners are more likely to notice roof debris and weather-related damage.

What's next: - Knoxville-area homeowners who see a sharp change in granules around the home are being urged to schedule a roof evaluation instead of waiting for a visible leak. - Tony’s Roofs says an inspection can help determine whether the roof needs maintenance, repair, rejuvenation or replacement. - The company says early detection can preserve more options and reduce the chance of a surprise repair bill. - Tony’s Roofs, a locally owned roofing and exterior home improvement company, says it serves Knoxville and communities across East Tennessee and offers roof repairs, replacements, metal roofing, roof rejuvenation, gutters, siding, fascia, soffit and decks. - Tony’s Roofs says it has more than 40 years of roofing experience. - Contact: Tony’s Roofs, 865-455-3820.