Algae vs Mold on Concrete Surfaces: Identify and Remove Both
Algae on concrete is usually a photosynthetic surface film that needs light and recurring moisture, while mold is a fungus growing on damp organic residue. Green, slippery growth outdoors is more likely algae, but dark staining alone cannot identify mold. Texture, moisture pattern, location, and a controlled cleaning test provide a better diagnosis. Key Facts […]