Black Streaks on Your Roof? Here’s What They Are — and How to Remove Them Safely in Georgia

Those black streaks running down your roof are a living algae called Gloeocapsa magma — not dirt, not stains, and not shingle damage. In Georgia’s hot, humid climate they spread fast, and the safe way to remove them is professional soft washing, not high-pressure blasting. This guide explains what the streaks are, why Lake Oconee […]