There’s no doubt that keeping a Buffalo, New York home in tip-top shape takes a lot of work. From shoveling snow in the winter to cleaning windows after a rainstorm, there’s always something that needs to be done. 

One task that’s often overlooked – but that’s crucial for local homes? Roof cleaning.

It may not seem like a priority, but roof cleaning is essential to protecting the overall health of your home. A poorly maintained roof can lead to a number of problems, including leaks, mold, and structural damage. A dirty roof can also make your home look unkempt and can negatively impact its curb appeal.

In some cases, your roof just needs a quick power wash to look like new again. However, there are other instances where more extensive roof cleaning services are necessary to restore your roof to its former glory.
So, what are the signs that you need a major roof cleaning? Here are four common indicators that it’s time to contact a professional roof cleaning company.

1. Permanent Discoloration on Your Shingles

Over time, dirt, algae, and other materials can accumulate on your roof and cause discoloration. If this doesn’t go away on its own after a good rainstorm, then it’s probably time to give roof cleaning services a call. 

If you don’t seek professional help, the dirt and grime can continue to build up, making your roof look old and worn. This discoloration can then lead to permanent staining in some cases and require you to invest in shingle replacements. Depending on the size of your home and your roofing material, this can be an expensive repair.

A professional roof cleaning company will have the soft-powered water and cleaning solutions required to kill the algae, mold, and bacteria. This helps restore your shingles to their original color and prevent further deterioration.

2. You Can See Algae and Green Spots

If you notice green or black spots on your roof, they can be a sign of algae or moss growth. Algae and moss thrive in warm and humid environments, which are certainly common during Buffalo summers.

Algae and moss growth hold moisture against the roof, which can cause your shingles to deteriorate and break down over time. If the spots are left untreated, they can lead to water damage and leaks in your home.

Depending on your roof and the severity of its algae or moss growth, a roof cleaning company may be able to pressure wash it away. However, most roofs require a professional soft wash roof cleaning to kill the algae and prevent immediate reoccurring growth.

3. Your New-ish Shingles Look Faded and Dull

If your roof is only a few years old, but it looks like it’s seen better days, you might want to schedule a cleaning appointment. Shingles can fade quickly due to sun exposure, pollution, and dirt accumulation – leaving your roof looking dull and lackluster.

Homes in Buffalo, NY, are especially susceptible to this problem due to the area’s extreme weather conditions. Snow, rain, and ice can all take a toll on your roof and expedite dirt accumulation.

A professional roof cleaning will restore the original luster and color of your shingles – making your whole house look newer in the process. Additionally, a professional cleaning will help extend the life of your roof by preventing premature deterioration.

4. You Can See Black Spots

Black spots are the most common indicators of mold growth, which is something you need to take quite seriously. Unfortunately, it only takes mold 24 to 48 hours to start growing in a moist environment – posing a significant risk to your home.

Mold can eat away at the roofing material itself, further compromising your roof’s structural integrity. It can also cause wood rot, shingle deterioration,and leaks. Repairing severe roof damage caused by mold costs anywhere between $15,000 to $30,000+.

If you’ve noticed any black spots on your roof, give a roof cleaning service company a call right away. They will be able to properly assess the situation and determine the best course of action for your specific roof. When caught early, mold and other roofing issues can often be remedied with a simple cleaning.


As you can see, there are several signs that indicate it might be time for a cleaning. If you’ve noticed any of the issues listed above, act quickly.

When caught early, most roofing problems can often be remedied with a professional cleaning. However, if left untreated, they can quickly escalate and cause significant – and expensive – damage to your home. So, it’s always better to be safe than sorry when it comes to roof maintenance.

Contact Us

If you need professional roof cleaning services in Buffalo, New York, William C. Rott & Son is here to help. We have been serving Buffalo and the surrounding areas for over 100 years and have the experience and expertise to handle any roofing issue you might have.

Call us at (716) 694-8220 or contact us on our website to schedule your roof cleaning today!