BLOG What're these black streaks on my roof? Does it need to be replaced? Dec 29, 2023

Have you noticed black streaks or stains on your roof? Don't panic just yet. While it may be unsettling to see these unsightly marks, they don't necessarily mean that your roof needs to be replaced. In fact, it's quite common for roofs to develop black streaks over time, and there are ways to address the issue without resorting to a complete roof replacement.

The most likely cause of these black streaks is a type of algae known as Gloeocapsa Magma. This algae thrives in warm and humid climates, which makes it a common problem in many parts of the country. When it lands on your roof, it forms dark stains that can spread and become more prominent over time.

So, what can you do about these black streaks? The good news is that they can usually be removed with a professional power washing or soft washing service. Power washing uses high-pressure water to clean and remove debris. Although if it is used on a delicate surface such as asphalt shingles, severe damage will be done to your roof, from loose shingles, to missing crucial granules. Meanwhile soft washing is a gentler method that utilizes low pressure water, and eco-friendly detergents to kill the algae and clean the roof surface.

If you decide to hire a professional power washing service like Power Washing 219, we will carefully assess the condition of your roof and determine the best approach to remove the black streaks, and any other debris on your roof or gutters. We will use the appropriate tools and techniques to clean your roof without causing any damage to your home.

While soft washing your roof can be an effective solution for getting rid of black streaks, it's important to note that the algae may eventually return. Regular maintenance and cleaning can help prevent the algae from coming back, but it's a good idea to keep an eye on your roof and address any signs of algae growth as soon as possible.

If the black streaks on your roof have been left untreated for a long time, they may have caused some damage to the shingles. In this case, a roof replacement may be necessary. However, it's always best to consult with a professional roofing contractor to determine the extent of the damage and the most appropriate course of action.

In conclusion, black streaks on your roof are usually caused by algae and can be effectively removed with soft washing. Before jumping to conclusions and considering a roof replacement, it's important to consult with a professional who can assess the situation and provide expert advice. Remember, regular maintenance and cleaning can help keep your roof in good condition and prevent the black streaks from returning. So, don't fret about those black streaks just yet - reach out to a professional power washing service and let them handle the problem for you!