How Much Does It Cost to Clean a Roof?

Stephanie Shaykin
Reviewed by Ami Feller
Updated January 31, 2022
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Photo: Compassionate Eye Foundation / DigitalVision / Getty Images

The typical homeowner can expect to pay between $300 to $600 for roof cleaning

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Streaky marks of algae, moss, dirt, and dusty debris can appear on your roof, especially in the crevices that don’t get a ton of natural light. Many homeowners think replacing the roof is the only option, but a good cleaning can be the easier (and more affordable) fix. 

The cost of roof cleaning can range from $300 to $600 and averages around $400 nationwide. These prices vary depending on the cleaning time, the amount of moss and algae buildup on the roof, and your roof's size.

How Much Does It Cost to Clean a Roof Per Square Foot?

Roof cleaning costs vary by the size of your roof plus a few other factors, including where you live. Roof cleaning costs between $0.20 to $0.60 per square foot.

The bigger and steeper your roof, the more you’ll pay. But size isn’t the only factor that influences cost. Where you live, the roof cleaning company you choose, and the type of cleaning service you need are also essential factors to keep in mind.

How Much Does It Cost to Hire Professional Roof Cleaners Near You?

Labor costs also vary from area to area, depending on the cost of living. Here are the average ranges of roof cleaning for eight states:

  • Georgia: $300–$500

  • Massachusetts: $400–$700

  • Minnesota: $400–$800

  • Montana: $300–$600

  • Nevada: $200–$400

  • New York: $300–$600

  • Ohio: $400–$600

  • Texas: $200–$500

Roof Cleaning Cost Breakdown

Roof cleaning is much more than a nice-to-do for homeowners. In just one season, regular roof cleaning could save you thousands. It may even add value to your property while increasing the quality of life in your home.

If you don't clean your roof for 10 to 15 years, the heat-retaining algae can cause a spike in your energy bill.

What Factors Influence the Cost to Clean a Roof?

Factors that influence roof cleaning costs might include:

  • Extra services such as coating, frequency of cleaning, size, and height of the roof

  • Where you live

  • The amount of cleaning. Do you want just a few spots cleaned or a complete roof cleaning?

  • Your roof’s slope

  • What type of cleaner does your pro use? Do they want it done with chemicals alone, soft washing (which uses low pressure), or some combination thereof?

  • The roofing material. Some materials like wood or tile need to be treated with more delicate care and attention than others.

Time Since Last Roof Washing

How often you clean your roof affects the price. And “once you clean the roof, it should be good for at least five years, maybe even 10,” says Ami Feller, Angi Expert Review Board member and owner of Roofer Chicks in New Braunfels, TX.

Roof Size

Naturally, larger roofs require more time to clean on average, so professionals usually charge per square foot. The average size of a residential roof is about 1,700 square feet, and you should expect to pay a higher price if you have a larger-than-average roof.

The shape and style of the roof also impact its price. Cleaning a steep roof or one with lots of gables may cost $0.15 more per square foot.

Adding a Coating

Coating a roof seals the material and provides many benefits like helping to repel water and reflect sunlight. The average cost to coat a roof is $975, which includes the price of cleaning.

Where You Live

A sunny area will be less susceptible to high levels of algae and moss, but if you live in a place where rainy days are common, you may need more frequent cleanings. Even if you live in sunny Florida, houses by the beach typically need to be cleaned more often to protect them from the salty coastal air, which can cause damage. “The humidity levels impact it a lot. For algae to grow, you need humidity and heat together,” says Feller.

Homes near lots of trees also need more frequent cleanings to prevent leaf buildup.

Height

The square footage of your home determines typical roof cleaning prices. Typically, prices are about $0.10 per square foot for more multi-story homes.

Roof Cleaning FAQs

 Person standing on a ladder pressure washing the roof
Photo: ronstik / iStock / Getty Images Plus / Getty Images

Should I hire a roof cleaning service or do it myself?

DIYing this project is dangerous, as you don’t want one of those Clark Griswold moments. Cleaning your home's roof could put you in danger of falls, scrapes, and potentially even burns if you live in a hot climate. 

Hiring a professional to clean your roof will always end well. A contractor can:

  • Safeguard the surface

  • Prevent breaking fragile tiles or shingles

  • Employ the right products for the material

Pro Tip: Be sure to get at least three quotes and ask about their experience when searching for roof cleaning services in your area.

There are also many products on the market that could ruin your roof. If you're considering buying a do-it-yourself roof cleaning kit, reconsider. Such products can speed up the deterioration of your roofs by damaging any petroleum-based shingles on them. 

You should always consult a reputable roofing contractor. A professional will be aware of and adhere to the Asphalt Roofing Manufacturers Association (ARMA) and the Roof Cleaning Institute of America (RCIA).

Should I power wash my roof?

The ARMA warns against power washing roofs that have algae, as power washing can damage your roof. Instead, ARMA recommends a softer method of cleaning called "soft washing" to avoid water-related damage. It’s best to go with the most licensed pro on this project.

What should I consider when cleaning a roof?

Consider the size, location, and amount of buildup on your roof before collecting quotes from roof cleaners. Remember, the longer you go without a roof cleaning, the more expensive the project will run you. To keep your overall upkeep expenses down, consider more frequent cleanings.

What other projects should I do at the same time?

Roof cleaning is a perfect time to knock other projects off your list. While you’re at it, consider the following projects when getting your roof cleaned near you like exterior power washing, gutter cleaning, or window cleaning

You could also tackle other exterior features and repair your fence, clean up your lawn, or get a pool cleaning service in your area to take care of everything so you don’t have to.

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