Roof Cleaning in New Jersey

New Jersey Roof Cleaning

We are glad that you are taking the time to research why and who you should use to clean your roof.


If your roof shingles are still under their warranty period (typically 25 to 40 years) and still in good shape, call us to have it cleaned. If there are any leaks due to minor shingle damage or a few missing shingles, call us anyway and we can make simple repairs first! Pay a fraction of the cost of a new roof!


NO. The black streaks will prevent your shingles from deflecting the sun properly and can increase your cooling costs. Also, since the algae is feeding on the limestone in your shingles, it is slowly breaking them down. By not cleaning your roof, you are reducing the life of your shingles by up to 50%!


NO. We do not use a pressure washer at all when cleaning roofs. Using a Pressure washer or surface cleaner will void your roof warranty! We use a specialized NON PRESSURE system designed to gently clean the algae from the surface of your roof. Our system uses no more pressure than your garden hose! We simply apply the cleaner; allow it to dwell and rinse it clean.

New Jersey Roof CleaningNew Jersey Roof Cleaning

New Jersey Roof CleaningNew Jersey Roof Cleaning

New Jersey Roof CleaningNew Jersey Roof Cleaning

New Jersey Roof Cleaning

( eradicating lichen left side is still alive )

Under Pressure H2O is your source for quality roof cleaning in New Jersey that you can rely on to be done correctly and safely. Our New Jersey roof cleaners take every precaution to protect your roofing, which is why we use the softwashing method to clean roofs in New Jersey. Unlike pressure washing, which can damage roofing shingles and leave you with the need for roof repairs or a complete roof replacement, softwashing is a gentle yet effective roof cleaning solution that will make your property look as good as new!

The dark stains on your roof may not just be dirt and grime. While our roofs take a lot of abuse from the weather, collecting years of debris and grime, what may be causing your roof to look so dirty could be living algae. This stuff is a major concern as it can actually eat away at your roofing, leaving you with structural problems and a slew of roof damages if left unattended. Roof mold and algae grow and spread rapidly in Jersey, and require specialized treatments to remove thoroughly. At Under Pressure H2O, our New jersey roof cleaning experts do more than just clean your roof - we treat it and remove the algae/mold. Our softwashing system of roof cleaning thoroughly removes the organisms and stains without compromising your roof.

With over 20 years of experience providing residential and commercial roof cleaning in New Jersey, Under Pressure H2O is the New Jersey roof cleaning company you can rely on for expert results and exceptional customer service.

Professional Roof Cleaning in New Jersey

The Asphalt Roofing Manufacturers Association (ARMA) cautions against using pressure cleaning to remove black streaks, mold, algae and other debris from roofs in New Jersey. This is because using high pressure washing to clean roofs is damaging to the roofing material. While power washing is a great method for cleaning more durable surfaces such as concrete, it is not recommended for delicate surfaces such as roofing shingles, painted surfaces, and etc., as it can ruin the composition of the material used in constructing the surface.

This is why it is important to use softwashing when it comes to New Jersey roof cleaning. softwashing systems are able to remove algae, mold, and black streaks from roofs effectively by combining the right cleaning solutions as opposed to high levels of water pressure. Our New Jersey roof cleaning services utilize softwash systems and provide homeowners and businesses with a safe, efficient way to increase curb appeal and protect the integrity of roofing systems.

Our New Jersey roof cleaners use a delicate blend of environmentally friendly detergents to thoroughly clean and restore any roof without causing damage. We are known for being the experts at softwash roof cleaning in New Jersey, and we take pride in exceeding the expectations of our clients with professional customer service and exceptional quality results.

Dark Stains on the Roof: What They Are & How to Get Rid of Them

If there are dark stains on your roof in New Jersey, it's highly likely that there is a persistent type of algae growing on your roofing system. This algae is called Gloeocapsa Magma, and it frequently does a number on roofs in the New Jersey area. Not only does it make a roof look dingy, but it weakens the roofing system by eating away at the roofing material as it spreads.

softwash roof cleaning from Under Pressure H2O is an effective and gentle way to remove these stains AND kills the algae without harming the roof itself. By cleaning and treating the roof, our New Jersey roof cleaners can ensure that the stains don't come back. You don't have to just take our word for it, though. We provide a 5 Year Warranty with our roof cleaning services, so you can rest assured your investment is protected.

About the Black Roof Stains

The algae and mold that cause green and black roof stains actually have tiny root systems which physically break down asphalt and composite roofing shingles. This in turn allows larger organisms to grow on and destroy your roof. This can cause anything from roof leaks to the lose of shingles, infestations of termites, and structural damage to your home. This is why it is so important to invest in routine roof cleaning in New Jersey. Otherwise you could face the expense of a premature roof replacement. Having your New Jersey roof cleaned regularly by our professionals is a miniscule fraction of that cost!

Getting Rid of the Black Stains on Your Roof

Our softwash roof cleaning system utilizes sodium hypochlorite (bleach) as a cleaning solution. The bleach is necessary to kill harmful algae, bacteria, mold, and fungus with nearly 100% efficiency, ensuring your roof is properly treated. Don't worry - it's 100% safe. Sodium hypochlorite is the same chemical used to treat our drinking water and sanitize our swimming pools. It will not harm your roof or the environment. In fact, the majority of the bleach rapidly breaks down into salt and water immediately after use, so there's no need to worry about environmental harm. It is the most effective way to gently clean and treat roofs plagued with green and black roof stains. Just to make sure you're even more assured we are fully insured! We carry 2 million in liability and full workman's comp on all of our employees, how's that for piece of mind?

Not to mention, our softwash roof cleaning application is very fast and effective! You'll start to see the results immediately after our roof cleaners are finished!

If you would like to learn more about our roof cleaning services or schedule an appointment for service with one of our New Jersey roof cleaners, please call us at 732-664-2568 today. We look forward to helping you transform and protect your home or business with our roof cleaning services!


Living Smart: Roof Cleaning

What causes those dark marks, and what can be done to eradicate them?


Roof experts who are highly rated by members of Angie’s List say the source is an algae called Gloeocapsa magma. And depending on the age and condition of your roof, cleaning may be the most cost-effective solution, since it’s about 5 to 10 percent of the price of a roof replacement, which can be as much as $10,000.


Algae-caused marking isn’t preventable but can be removed, though not always permanently. The algae survive through photosynthesis and by feeding on limestone filler used in asphalt shingles.


Black marks became a problem about 20 years ago, when manufacturers began adding limestone granules to add weight to material used to coat shingles.


Roof experts tell our researchers that though other components are being added to shingles to hinder algae growth, they still get calls to deal with black marks on relatively new roofs. They say that while shingle manufacturers offer products treated with copper or zinc to inhibit algae growth, their effect wears down over time.


Most black streaks form on the northern slopes of roofs, where it’s darker and wetter – ideal for algae growth. Areas of the country with low humidity have fewer instances of roof streaks, while the problem is relatively common in the Southeast, where it’s more humid and warm. The algae appear blue-green when the organisms form an outer coating to protect themselves from ultraviolet rays. Algae turn black when it decays.


While the dark streaks are unsightly, experts tell our team that the greatest danger to the roof is from moisture retention or root damage that algae and other life forms can cause. Also, algae and fungus can grow together to form lichen, the roots of which can wrap around and feed on the granules covering the shingles. Once established, lichen is not easily removed. Even if it dries out, it can come back to life with the next rain. Scrubbing or power washing lichen will only cause more damage.


Before determining whether having your roof cleaned is the right option, be sure you have a sense of your roof’s age and condition, and compare costs accordingly. A cleaning can cost around $200 to $1,500, depending on the size of the roof, its pitch and height.


When hiring a company to clean your roof, consider this advice, gathered by our research team, which talked to multiple highly rated roofing experts:
˙ Make sure the cleaners don’t use high-pressure washing systems, which can remove granules coating shingles, and lower their life expectancy.
˙ Ask what kind of cleaning solution the company uses. One highly rated roo"ng expert said he uses a chlorine-based chemical wash with a soaping agent. Also, make sure the company has a plan for preventing possible damage to your home or landscaping from runo#. !at same roo"ng expert said he has one worker apply the cleaner while another saturates nearby areas with water to prevent damage.
˙ Ask how long the cleaning method should keep the roof algae-free. A range of two to five years is normal.


As with hiring any contractor, ask family and friends for references or check online consumer reviews from a trusted source, get several bids, seek and contact references, and confirm liability and workers’ compensation insurance.


And then, prepare to once again enjoy how your home looks without those dark ugly roof streaks.


Angie Hicks is the founder of Angie’s List, a resource for local consumer reviews on everything from home repair to health care. Visit for more.


If you are looking for a New Jersey Roof Cleaning Contractor then please call 732-664-2568 or complete our online request form.

Roof Cleaner New Jersey