The answer to 'drip edge algae growth' is that algae growth on the drip edge of your roof is a common problem caused by moisture, poor air circulation, and shaded areas. Symptoms include a green or black slimy buildup that can trap moisture and lead to further damage. Solutions include cleaning the drip edge, improving ventilation, and using a roof treatment to prevent future algae growth.
In most cases, homeowners can address minor algae growth on the drip edge themselves. However, if the problem is widespread or causing damage to the roof, it's best to call a professional roofing contractor to inspect and properly treat the issue.