Jennings Roofing | Roofing Services in Mountain City, TN 37683

Those black streaks are likely Gloeocapsa magma algae, which thrives in our humid climate. While gentle cleaning can remove them, it's often a sign of underlying moisture retention. We recommend a professional assessment to clean the stains safely without damaging your shingles and to check if improved ventilation is needed to prevent them from coming back quickly.

Inadequate ventilation traps heat and moisture in your attic. In summer, this superheats your shingles and living spaces, raising cooling costs. In winter, it melts snow unevenly, leading to ice dams along your eaves that can cause water damage. We evaluate and install balanced intake and exhaust systems to regulate temperature, protect your roof's structure, and improve your home's overall energy efficiency.

Absolutely. A properly ventilated attic prevents excessive heat buildup in the summer, which can make your upper floors much hotter and force your AC to work harder. By allowing hot air to escape, your insulation works more effectively, reducing the strain on your HVAC system and helping to lower those cooling costs common during our muggy Mountain City summers.