1-800-HANSONS - Detroit's Experienced Roof Repair

Those black streaks are likely algae stains, common in our humid climate, while granule loss often signals aging shingles from Michigan's freeze-thaw cycles. For algae, we offer professional roof cleaning and can install algae-resistant shingles on a replacement. For significant granule loss, a roof repair or replacement may be needed to prevent leaks and protect your home's structure. We'll assess the damage and recommend the most cost-effective fix.

Absolutely. Properly installed and maintained gutters are your roof's first line of defense. In Detroit, clogged or damaged gutters can cause water to back up under shingles, accelerating granule loss, promoting algae growth, and leading to ice dams in winter. Our gutter installation and repair services ensure water is channeled safely away from your roof and foundation, directly addressing a key cause of common local roofing issues.

It's a smart question. Roof algae can sometimes spread to siding, especially on the north side of a home. While siding repair or replacement might be needed if the siding itself is damaged or stained, addressing the roof is often the priority. We recommend an inspection to see if the algae originated on the roof. Installing new, algae-resistant roofing materials and ensuring your gutters are clear can prevent recurrence, protecting both your roof and siding long-term.