A clean roof not only improves the curb appeal of your home but also extends the lifespan of your roof. Regular cleaning can prevent the buildup of moss, algae, and debris that can cause damage to your roof. However, you may be wondering how much roof cleaning costs and what factors affect the price. In this article, we will cover everything you need to know about roof cleaning costs.

How Much Does Roof Cleaning Cost?

Why is Roof Cleaning Important?

Over time, your roof accumulates debris, algae, moss, and other organic growths that can damage the shingles and decrease the lifespan of your roof. A dirty roof can also decrease the energy efficiency of your home and raise your energy bills. Regular cleaning can prevent these issues and keep your roof in top shape.

Factors that Affect Roof Cleaning Cost

Several factors affect the cost of roof cleaning. Understanding these factors can help you estimate the cost of your roof cleaning project.

Roof Size

The size of your roof is the most significant factor in determining the cost of roof cleaning. The larger your roof, the more time and cleaning solutions the job requires. Most contractors charge by the square foot, so the bigger your roof, the higher the cost.

Roof Pitch

The pitch of your roof also affects the cost of roof cleaning. A steep roof is more difficult and dangerous to clean than a flat roof. This means that a contractor may charge more for a steeper roof due to the increased risk of injury.

Roof Material

The material of your roof affects the cost of cleaning. Some roofing materials, like tile or metal, are more durable and require less cleaning. However, softer materials like asphalt shingles may require gentler cleaning methods and more frequent cleaning, which can increase the cost.

Roof Condition

If your roof is severely damaged or in poor condition, it may require more extensive cleaning and repairs. In this case, the cost of roof cleaning may be higher than average.


The location of your home can also affect the cost of roof cleaning. If you live in a high-cost area, like a major city, you may pay more for roof cleaning services than someone in a rural area.

Types of Roof Cleaning

There are three main types of roof cleaning: soft washing, pressure washing, and chemical cleaning.

Soft Washing

Soft washing is a gentle cleaning method that uses low-pressure water and cleaning solutions to remove dirt, debris, and organic growth from the roof. Soft washing is ideal for delicate roofing materials like shingles, as it doesn't damage the surface.

Pressure Washing

Pressure washing uses high-pressure water to remove dirt, debris, and growths from the roof. Pressure washing is more effective than soft washing but can damage delicate materials like shingles. It is best suited for harder roofing materials like metal or tile.

Chemical Cleaning

Chemical cleaning uses a mix of chemicals to kill and remove organic growth from the roof. Chemical cleaning is effective but can be harmful to the environment if not done correctly.

DIY vs. Professional Roof Cleaning

While it is possible to clean your roof yourself, it is often safer and more effective to hire a professional. Professional roof cleaners have the necessary equipment and experience to clean your roof safely and thoroughly. However, some homeowners may choose to clean their roofs themselves to save money. Here are some things to consider when deciding whether to DIY or hire a professional:

DIY Roof Cleaning

Cleaning your roof yourself can be a cost-effective solution, but it also comes with some risks. Climbing on a roof can be dangerous, especially if you're not familiar with the proper safety precautions. Additionally, if you're not experienced in roof cleaning, you may not know how to identify potential problems, such as cracks or leaks, that could cause damage to your roof. Finally, cleaning your roof yourself may not be as effective as hiring a professional, as you may not have access to the same equipment and cleaning solutions.

Professional Roof Cleaning

Hiring a professional roof cleaner can be more expensive than cleaning your roof yourself, but it comes with several benefits. First and foremost, professional roof cleaners have the necessary equipment and experience to clean your roof safely and thoroughly, without causing damage to the roof or surrounding landscaping. Additionally, professional roof cleaners are familiar with the different types of roofing materials and can tailor their cleaning approach accordingly. Finally, hiring a professional can save you time and hassle, as they can typically complete the job more quickly than you could on your own.

Roof Cleaning Cost Breakdown

The cost of roof cleaning varies depending on the factors mentioned above and the type of cleaning method used. On average, the cost of roof cleaning ranges from $200 to $1,000 or more. Here is a breakdown of the cost of each cleaning method:

  • Soft washing: $0.20 to $0.30 per square foot
  • Pressure washing: $0.30 to $0.40 per square foot
  • Chemical cleaning: $0.50 to $1.00 per square foot

The cost of roof cleaning also includes additional fees for factors such as roof condition, location, and accessibility. For example, a contractor may charge extra for a steep roof or a roof with a lot of debris.

Roof Cleaning Cost: Everything You Need to Know

How to Save Money on Roof Cleaning

While roof cleaning can be a significant investment, there are ways to save money in the process. Here are some tips for reducing the cost of roof cleaning:

  • Hire a professional who offers a free estimate
  • Schedule cleaning during the off-season when contractors may offer discounts
  • Choose a less expensive cleaning method, such as soft washing
  • Negotiate with the contractor for a lower price
  • Regularly maintain your roof to prevent the need for extensive cleaning

How Often Should You Clean Your Roof?

The frequency of roof cleaning depends on several factors, including the climate, the amount of rainfall, and the type of roofing material. In general, experts recommend cleaning your roof every 1-3 years to maintain its integrity and prevent damage.


Roof cleaning is an essential part of maintaining the health and longevity of your roof. The cost of roof cleaning varies depending on several factors, including the size, pitch, material, condition, and location of your roof. By understanding these factors and choosing the right cleaning method, you can save money on roof cleaning while ensuring that your roof remains in excellent condition.


Is roof cleaning necessary?

Yes, regular roof cleaning is necessary to prevent damage to the roof and prolong its lifespan.

What is the best time of year to clean a roof?

The best time to clean a roof is during the dry season when there is less rain and moisture.

Is it safe to clean a roof yourself?

While it is possible to clean a roof yourself, it can be dangerous, and it is often safer to hire a professional.

Can roof cleaning prevent the growth of algae and moss?

Yes, regular roof cleaning can prevent the buildup of algae and moss that can damage the roof.

How long does roof cleaning take?

The time it takes to clean a roof depends on the size, pitch, and condition of the roof. A typical roof cleaning job takes between 2-4 hours.