Understanding and Removing Black Streaks from your Roof

What causes black streaks on roofs?

Many homeowners are dismayed to find dark streaks on their asphalt shingle roof, fearing that it may be dirt, mildew or mold growth. In reality, these stains are caused by a type of bacteria called Gloeocapsa Magma. The growth of this bacteria on shingles is not harmful to humans, but can be unsightly, significantly reducing the curb appeal of your home, as well as destructive to your shingles.

Why is it important to remove black streaks from your roof?

Dark spots often appear on northern-facing or other shaded surfaces that are damp and conducive to bacteria growth. It is often spores carried by squirrels, birds or insects that spread quickly to form black streaks on shingles; left untreated, these streaks can cause further damage to your shingles, ultimately penetrating any structural supports underneath.

How to safely and effectively remove black streaks from your roof?

Many DIY products that claim to remove these stains from your roof often contain bleach or similar harsh chemicals that can harm the environment and actual shingles, paint or vinyl siding at a later stage. Inhalation of bleach could also pose health hazards to humans. So, for your own health, opting for a DIY approach may not be something you want to try. Additionally, any plants or landscaping you may have are also at risk with these over the counter chemicals. This is what makes hiring the roof cleaning specialist at Diamond Roof Cleaning the ideal solution for washing your roof.

Why hire professional roof cleaners?

The quickest and safest way to remove black streaks from your roof is with our specialized soft wash roof cleaning service. Over the course of more than a decade we have perfected our unique blend of eco-friendly detergents so that it goes beyond simply cleaning. It kills bacteria at its source, thereby preventing future outbreaks. In addition, our proven soft wash methods means that while it removes dirt that causes premature aging of shingles and siding degradation, the process itself will never harm your shingles.

Other ways to enhance your home’s curb appeal

In addition to our soft wash roof cleaning, we also offer several other ways to boost the curb appeal of your home. Such as soft wash siding cleaning and pressure washing for concrete surfaces. An unsightly or stained exterior not only reduces its curb appeal, but can lead to many different problems, including the deterioration of the siding and wood trim. So, let us take care of your home’s exterior, and it will take care of you!


Ronald Tuczak
Ronald Tuczak
4 months ago
It was tremendous leaving for work and coming home to an amazingly clean home. These photos were taken the same day. My landscaper recommended Mike and he and his team delivered. A quick response and excellent service with quality results. I just had new landscaping in place and he tarped my plants and all debris was removed. I highly recommend!
Joel Bryan
Joel Bryan
6 months ago
It was easy to get a quote and schedule the work. They came out and definitely did a great job of cleaning the house. It is the cleanest it ever was. My only issue is that two of the exhaust fan covers were blown off (?) and no one said anything about it before they left. I did not get the covers back so I assume they were taken away. I'm attaching a picture of one of them. If it was at least mentioned, then I would have given a 5 star review. -Changed to 5 Stars- This is a class A company to deal with. The owner came out and inspected the damage and issued a reimbursement. He also offered to do the installation which was more than I expected. They really do care that their customers are 100% satisfied!
Laura Russo
Laura Russo
a month ago
Mike and his staff always do an amazing job cleaning our gutters. He is prompt, responsive and reasonable priced in comparison to others I've used. I also really appreciate how they clean up the debris including wash down the driveway afterwards!
Jane Tuso
Jane Tuso
2 weeks ago
Diamond did an awesome job cleaning our house, roof and driveway!! Everything looks sparkling clean. My driveway looks new!! Mike was great to work with and was able to schedule our house very quickly. Thank you for the amazing service!!
Pamela Banks
Pamela Banks
8 months ago
This is the second time I’ve used Diamond Roof Cleaning to wash my stuccoed home. I’d heard horror stories from others who’d had their homes power washed and questioned the owner, Mike, who gave me addresses of homes similar to mine so I might see his work. I liked what I saw and took a chance with DRC. They did a fantastic job. The workers were friendly, respectful of my property by removing cushions from the patio chairs to keep from damaging/wetting them and answered any questions I had. Now my house looks brand new and I couldn’t be happier.

Why Choose Diamond Roof Cleaning

Unmatched Service & Technology

From our state of the art cleaning systems, advanced cleaning methods to insure the best and safest results, to our intensive employee training, you can rest assured that with Diamond Roof Cleaning your home is being treated by the best and most reliable pressure washing and exterior cleaning company in Southern New Jersey! But don't take our word for it, our more than 420 5-star reviews speak for themselves!


There Is Nothing We Can't Clean

Whether your property has vinyl or brick siding. Whether it is a multi-building apartment community or and single family home, the soft washing and pressure washing professionals at Diamond Roof Cleaning can clean almost anything! Amazing results and friendly service and standard with us! We are proud to serve these great communities:

Fully Insured Pressure Washing Service In Southern New Jersey

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