Your North Wall Is Lying to You
North Georgia homes are dealing with something locals call "the Georgia Curse," and if you have not heard of it, your siding probably has. North-facing walls get almost zero direct sunlight. That means they stay cooler, hold more moisture and become a perfect feeding ground for mold and algae to take over.
The humidity here is not seasonal. It is relentless. Warm temperatures and high humidity create the perfect breeding ground year-round, and shaded areas like the north-facing side of your home or spots under trees are especially vulnerable. Once growth starts, it does not slow down on its own.
Algae and mildew cling to surface pores, especially on older paint or weathered concrete, and because temperatures rarely drop low for long, those organisms never fully go dormant. They keep feeding on dust, pollen residue, and shingle fillers.
The green haze and black streaking you see every late winter? That is months of quiet, unchecked growth. Your home needs attention before the damage becomes structural.