Tel 301-762-9274

Roof Cleaning Company

Our roof cleaning company services Montgomery County Maryland, Frederick and Prince Georges County Maryland. Finding a company to clean your roof that is trained to properly clean roofs can be tough, most power washing companies use high pressure cleaning methods to blast off mold, lichen and other debris along with part of your roofing!

Roof Cleaning

What Roof Cleaners Should You Hire?

Roof Cleaning
  • Only hire a company that understands roofing installations and can inspect and repair minor roof leaks.
  • Only hire a company that has been properly trained for roof cleaning.
  • Only hire a company that uses less than 150 PSI OR LESS which is about the same pressure your garden hose spray nozzle gives.
  • Make sure that the company uses professional grade soaps and detergents remove Bacteria, Mold and Mildew that is on your roof, not high pressure!
  • Make sure that the company you hire completely rinses off your roof when they have finished the job!
  • Never let a power washing company tell you that they sprayed the roof, now just let mother Nature rinse off the dead stuff and it will look brand new after a few rains. I know that may sound crazy but there are a few companies in the area that do this, so make sure you ask them for their entire process! Believe it or not, a lot of companies promote this method, because it saves them a lot of time, it also prevents you from being able to see the surfaces that they cleaned.

We Are The Most Experienced Roof Cleaners In Maryland!

Roof Cleaning ServicesSince 1989 we have offered roof washing, house washing and deck cleaning services to over 60,000 properties in Maryland. All of our roof cleaning is performed by trained technicians that inspect your roof for common problems and check to make sure your roof can be safely cleaned using our low pressure roof cleaning system.

Training and education is important when cleaning a roof, the process of cleaning asphalt shingle roofs itself is fairly simple if you know how roofs are installed, and can identify possible roof leaks and what type of stains you need to remove.

Most power washing companies that consider washing roofs find that there is a considerable amount of technique and skill when that’s needed to do it correctly. Any contractor that performs roof cleaning should be aware of roofs are installed, failure to understand roof installation methods can cause thousands of dollars in damages from a pressure washing contractor.

It is important that the company use extremely low pressure to avoid damaging the shingles and that the roof is inspected prior to the commencement of the job. Remember, most pressure washers use a minimum of 4 GPM and as much as 10 GPM! So it is easy to understand why knowledge of roofing installation and a roof inspection is necessary when you consider the amount of water that could enter the structure during cleaning.

Hiring a roof cleaning company

Before hiring a company to clean your roof make sure they understand the basics of roof installation. It is also equally important that your roof cleaner know the other structures on the roof and their function to avoid causing leaks around them.

Note: This is extremely important because some companies in Rockville Maryland have caused some damages to homes in the area over the years.

Most roofing materials are installed over a layer of felt paper and in some cases a rubber like ice guard material. The first layer of shingles is called the starter course and is installed at the lowest point on the roof, upside down. This allows a solid base for water to run over without leaking down into the rafters and plywood between the shingles key ways. Once this layer is installed another shingle is place directly on top of it, and the rest of the roofing is placed in a similar fashion up the roof line. The reason shingles are installed in this manner is to allow the water to run over one shingle onto the next until it enters the gutter system.

If your roof cleaner can identify the common fixtures on a roof the next step is to identify what they will be cleaning from the surface. The most common reason for cleaning asphalt shingle roofs is to remove a fungus growth called Gloeocapsa Magma. This particular type of algae is air-born and will collect on any type of roof. In most cases the owner of the property will not notice the algae growth until it begins to take over large sections of the roof. This algae usually forms dark brown or black stains on the roofing and it thrives in mostly warm humid areas.

Is roof cleaning safe?

A company with the appropriate roof cleaners, equipment and experience can safely and effectively clean roofs to remove black streaks, mold and mildew from roofs. The problem is, most companies in Maryland do not have the proper training or knowledge to do the job correctly, they use high pressure cleaning methods or chemicals without any training or knowledge of what they are doing and kill plants, cause explosions and destroy roofs! Taking the time to learn the proper methods and purchase the right roof cleaning equipment is the problem.

We have been cleaning roofing in Maryland for over 30 years, we only use safe roof cleaners designed and manufactured by our vendors, and all of our technicians have been properly trained to perform the job. Our president Henry Bockman helped to design and write the training classes and material for classes taught by the Power Washers of North America many years ago, and is still an active instructor in the industry.

Manufacturer suggestions for cleaning roofs

Regardless of which company you use check with the manufacturer of the roof to make sure the roof cleaners used meet their guidelines. Some manufacturers will void the warranty on the shingles if their guidelines are not met. The one thing all roofing manufacturers agree on is that the use of high pressure should NEVER be used when cleaning. Some specifications set the safe pressure range at 400 PSI or less, but the best rule of thumb to use is the least amount of pressure and the mildest cleaner possible to achieve the desired results. All of the roof cleaners we use have been proven safe and effective for cleaning roofs and we generally use less than 100 PSI to clean any type of roofing. That is about the same amount of pressure you would get if you covered your hose with your thumb!

If you are considering hiring a roof cleaning company, I would highly recommend that you ask if they have taken a class by Sun Brite Supply or from the Power Washers of North America. These informative courses will give them an in depth look at proper techniques, chemical processes, and roof construction needed to clean roofs.

Call today at 301-762-9274 for roof cleaning services you can count on!

Our system for washing residential properties will protect your landscaping and remove all of the mold, mildew, black stains and other dirt that is covering your home! 

If you are ready to get an estimate from a professional residential cleaning company with a cleaning solution that will clean your property without using high pressure that can damage your property or kill your plants...

Residential House Washing Services

House Washing

Our system for house washing will restore the original beauty of your home and protect your landscaping while we remove all of the mold, mildew, black stains and other dirt that is covering your home!

Residential Roof Cleaning Services

Roof Cleaning

All of our roof cleaning is performed by trained technicians that inspect your roof for common problems and check to make sure your roof can be safely cleaned using our "NO PRESSURE" roof cleaning system.

Driveway Cleaning Services

Driveway Cleaning

Our driveway cleaning service will remove mold, mildew and surface dirt.  We can also remove rust stains and eliminate almost all ail stains using our special degreasers and 250 degree hot water system.

Brick Patio Cleaning Services

Patio Cleaning

Using professional grade cleaners and hot water pressure washing equipment, will clean the concrete stairs & walkways to remove gum, surface dirt, mold and mildew.

Residential Deck Cleaning Services

Deck Cleaning

Our deck cleaning includes a thorough wash, utilizing our specialized cleaning detergents that remove all surface dirt, dust, mold and living organisms. This cleaning procedure washes away ugly buildup to reveal a like almost new again.

Fence cleaning services

Fence Cleaning

Our fence cleaning services will remove mold and mildew from composite fencing. We also restore wood fences to prevent wood rot and extend the life of your wood fencing saving you thousands of dollars in replacement costs!

Residential Gutter Cleaning Services

Gutter Cleaning

Our rain gutter cleaning services will protect your home from thousands of dollars in damages. Clean gutters are your initial barricade against basement leaks, and damage to your homes foundation. When gutters overflow or leak, 100’s of gallons of water can flood your basement

Pool Deck Cleaning Sevices

Pool Deck Cleaning

Our pool deck cleaning services will make your pool safer and restore its appearance by removing years of dirt, mold, mildew and food stains without damaging the surface of your pool deck or patios.

Rust Removal Services

Rust Removal Services

Rust is a common problem, especially on surfaces that handle a large amount of machinery, metals, or fertilizers, and it is a very common problem near salt water. In some cases battery acid stains are often confused with rust stains.
white chalky stains on bricks

Stain Removal

Our stain removal services can remove efflorescence, white scum, calcium and acid burns from masonry and other surfaces without causing damage to the surface!

Awards and Certifications


Training and Certifications employees are some of the best trained and certified technicians in North America to ensure that “YOUR PROPERTY” is cleaned correctly and safely without causing any damages!

Professional power washing services by PowerWashCompany 2

Benefits of hiring!

  • Low Pressure cleaning methods that safely clean your property.
  • Environmentally friendly cleaning solutions to remove stubborn stains.
  • Safer equipment to prevent damages and mishaps on your property.
  • Reliable on time service within a two hour time frame.
  • Better quality as a result of learning the right techniques and methods so you don’t have to Baby-sit our technicians!.
  • A Better Price! The training our technicians take and the systems we use increase our quality so the job can be performed faster allowing us to offer a better value.


page title: Roof Cleaning