which makes the north side of your house, or areas under large trees, prime real estate. Vinyl and painted siding can often trap moisture, providing the perfect breeding ground for algae. These materials tend to hold onto water longer than other surfaces, allowing algae spores, which are always present in the air, to settle and grow.
As the algae grows, it feeds off the moisture and any organic material present on the siding, leading to those unsightly green patches that are so common. Understanding this helps in preventing algae growth
