Roof MaintenanceBlack Streaks and Moss on Georgia Roofs: What They Are and What to Do
Black streaks, green moss, and crusty lichen show up on a lot of North Georgia roofs. David Blackwell of Platinum Roofing explains what each one is, which are cosmetic and which do real damage, how to clean a roof without stripping its granules, and how to keep the growth from coming back.
David Blackwell · November 3, 2026 · 17 min read























