What Spring Algae and Moisture Streaks on Quad Cities Roofs Are Really Telling Homeowners
Published on: 01/04/2026
In Rock Island, Moline, Davenport, Bettendorf, and Milan, Midwest humidity, tree coverage, and seasonal moisture create ideal conditions for algae growth on asphalt shingles. Understanding what these streaks mean—and when they matter—helps homeowners protect their roof before summer heat and storms accelerate damage.
Home Maintenance
