The answer to 'skylight algae growth' is that it is a common issue caused by moisture, lack of sunlight, and organic debris buildup on the skylight surface. Symptoms include green, black, or brown discoloration and a slimy or fuzzy texture on the skylight. To solve this problem, it's important to address the root causes and clean the skylight properly.
For minor algae growth, homeowners can often clean the skylight themselves using a soft-bristle brush, mild detergent, and water. However, for more severe cases or if the algae has caused damage to the skylight, it's best to call a professional roofing technician. They can properly assess the situation, clean the skylight, and recommend any necessary repairs or replacements.