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What Is Soft Wash Roof Cleaning?

Posted on April 18, 2024

Estimated Reading Time : 5 Min.

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What Is Soft Wash Roof Cleaning?

Soft washing is a gentle roof cleaning process. Even though it is an integral element of the home, the roof is often overlooked when it comes to maintenance. Cleaning your roof on a regular basis is vital to avoid dust, debris, moss, or algae growth. However, harsh cleaning practices can cause more damage than improve them. 

Soft washing is a form of roof cleaning that exerts little to no pressure on the roofing system along with specialized chemicals to remove organic matter from roofs, such as moss, bacteria, and algae. It is safer and more effective than regular roof cleaning methods like pressure washing, which can damage roofing materials. Soft washing roof cleaning uses pressure under the rate of 100 PSI, making it a safer option for any roofing surface, including tiles, shingles, and metal roofs. It is also recommended for cedar shake, wood paneling, and more, as it is less likely to cause accidental damage.

How Does Soft Washing Differ From Pressure Washing?

soft wash roof cleaning

Here is a complete chart with the key distinctions between soft washing methods and pressure washing methods based on several factors. 

FactorsSoft WashingPressure Washing
Pressure LevelSoft washing roof cleaning is a low-pressure roof cleaning method.On the other hand, pressure washing requires high pressure
Cost On average, soft wash roof cleaning costs around $0.25 to $0.35 per sq ft.But it will save your roof from further repair and replacement costs.Pressure washing may cost you $0.20 to $0.60 per sq ft. 
Risk of DamageSoft washing uses a low pressure and does not affect the health of your roofing system.For certain roofing types, pressure washing can affect the health of your roofing system. 
Cleaning MaterialsSoft washing solutions are biodegradablePressure washing only requires water and sometimes detergent.
Recommended ForAsphalt Shingles, Wood Shingles, Slate, and ClayMetal Roofs

Why Should You Choose The Soft Wash Approach?

Soft washing offers many benefits beyond just cleanliness and enhanced integrity. Regularly engaging in soft wash roof cleaning services can extend the advantages of your chosen roofing material even more, ensuring a well-maintained and long-lasting roof for years to come.

Enhanced Protection for Roofing Materials

Regular soft wash roof cleaning helps protect your roofing materials from deterioration caused by organic growth, such as moss, algae, and bacteria. By preventing the buildup of these damaging elements, you can maximize your roof’s potential lifespan and maintain its structural integrity.

Improved Energy Efficiency

A clean roof reflects more sunlight, reducing heat absorption and lowering your home’s cooling costs. By keeping your roof free of debris and organic matter through soft washing it, you can enhance your home’s energy efficiency and reduce overall energy expenses.

Prevention of Structural Damage

Accumulated dirt, debris, and organic growth can cause structural damage over time if left uninspected. A soft wash roof cleaning removes these harmful elements and helps identify potential issues early, preventing costly repairs or replacements.

Healthier Living Environment

A clean roof free of mold, mildew, and algae contributes to a healthier living environment by reducing allergens and improving air quality. Regular soft wash cleaning can help mitigate health risks associated with these contaminants, creating a safer and more comfortable home for you and your family.

Increased Property Value

Maintaining a clean and well-cared-for roof through soft wash can significantly enhance your property’s curb appeal and overall value. 

By extending the benefits of softwash roof cleaning through regular maintenance and professional services, you not only preserve the quality and longevity of your roof, but also enjoy a range of additional advantages that contribute to a healthier, more energy-efficient, and valuable home environment. Invest in the care of your roof today to reap these long-term benefits for years to come, ensuring a bright future for your home.

How Do You Soft Wash A Roof?

Here is a four-step soft wash roof cleaning process:

Step 1: Preparation

The first step in the soft wash roof cleaning process is preparation. This step involves inspecting the roof for any loose or damaged shingles and making necessary repairs before the cleaning begins. It also includes protecting any delicate plants or landscaping around the home from the cleaning solution.

Step 2: Application of Cleaning Solution

The next step is to apply the soft wash roof cleaning solution with a sprayer nozzle. It should be applied to the entire roof, starting at the peak and working down to the eaves.

Step 3: Soak Time

After applying the cleaning solution, you can allow it to sit on the roof for some time. Let it sit on top of the roofing material for 10 to 20 minutes. During this time, the cleaning solution will break down and dissolve the organic matter on top of the roofing shingles, making its removal easier during the rinsing process. 

Step 4: Rinsing

After the cleaning solution has had time to sit on the surface of the roof, rinse the roof thoroughly using low-pressure water. The same low-pressure nozzle and wand that was used to apply cleaning solutions is used for rinsing. Ensuring the roof is rinsed thoroughly is important, as any remaining cleaning solution or organic matter can cause damage or stain the roof over time.

Step 5: Inspection and Follow-Up

After rinsing the roof, inspect it for any remaining organic matter or damage. If you find any issues, address them as needed. If you find any forms of damage while cleaning your roof you’ll want to call a professional roofing contractor for help to ensure the roof remains in good condition.

Signs Your Roof Needs To Be Soft Washed

  1. Moss and Lichen Growth: Moss and lichen trap excess moisture and advance roof decay. They can root themselves in your shingles.
  1. Black Streaks: If you see black streaks on roofs, it’s high time your home needs a soft wash roof cleaning. Black streaks on your roofs are colonies of black algae that eat away at your shingles, causing them to become brittle and dry up.
  1. Grime and Discoloration: Roofs can collect dirt, bird droppings, and grime, making them look rough and unappealing
  1. Leaf Piles and Other Debris: Piles of leaves and other forms of debris that do not blow away can cause the growth of algae or moss, causing damage to the roof

Why Should You Hire A Professional Roof Cleaning Company?

Hiring a professional to clean your roof will ensure it’s cleaned thoroughly and safely. Here are several reasons to choose a professional cleaning partner rather than do it yourself!

Professional Knowledge and Experience

Roof cleaning experts have the skills and experience to handle various types of roofing materials. With years of industry experience, they understand the unique cleaning requirements for each type of roof. 


Every roof cleaning involves a significant amount of danger, so you should not try to save money by hiring untrained roof cleaning professionals or doing it yourself. Instead, opt for professional roof cleaning services that gently clean the rooftop without harming it, giving you peace of mind that your home is safe.

Save Time

Your time off from work is precious. You don’t want to spend it making many visits to Home Depot, Lowes, and other hardware stores. By hiring an experienced roofing contractor to soft wash your roof, you’ll be able to free up time in your schedule for more important things.  

Get Professional Roof Cleaning Services In Atlanta, GA, Today!

If you suspect that your roof requires cleaning, don’t hesitate to call a professional for help. At RST Roofing and Renovations, we make it our priority to help our community stay in good condition every season by providing exceptional soft wash roof cleaning services. Call us at (404) 548-8901 to schedule a free consultation with one of our experts and get the best roof for your home!

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