Note: This is cleaning/treatment/restoration only. We do not offer roof repair services.

Roof Cleaning | Is It Softwash/No-Pressure/Non-pressure Process?

Roof Cleaning Is It Softwash_No-Pressure_Non-Pressure Process 850x433

When it comes to the exterior cleaning process, itself, it is all of the above when any of these terms are use. What does that mean? Simply put the cleaning process is done without the use of a pressure washer or power washer. What is the point being made when any of these terms are referred to? Simply put, the cleaning process will be performed or applied without the use of a pressure or power washer, nothing more or nothing less. That is not to say that a pressure or power washer doesn’t have it’s place in the exterior cleaning service, it does and in some cases will be needed. The above process, terms, tends to apply more to the roof cleaning service. In most cases you will see these terms used by a roof cleaning service. When you think about it, it makes common sense to not use high pressure cleaning a roof.

As an example, I specialize in cleaning cedar/wood roofs. The two things that shouldn’t happen when cleaning a cedar/wood roof is to walk on the roof and to use any form of pressure. Why? Because there would be a higher chance of damage to the roof. In my case, I don’t even own a pressure or power washer because I am a roof cleaner and have no need for one. I use a 60 psi 12V pump system to apply my cleaning solution and use a garden hose pressure from the outside water outlet to rinse when needed. Have I used the terms softwash/no-pressure/non-pressure? Yes. Again they are all one and the same, which means the cleaning process is not high pressure.

I could see where these terms could become confusing to the unknown potential customer. Granted the terms in and of themselves tend to speak to the meaning but to clarify in common explanation it basically means that the cleaning process is done without the use of high pressure or what some refer to as the use of a pressure or power washer.

Understand that the terms only apply to the type of cleaning process. They have nothing to do with the cleaning results other than not cause any harm to the project being cleaned by the process itself. The cleaning results will be determined by the person doing the cleaning and their degree of experience and the cleaning solutions they use. When you think about in these terms it makes common sense.

When considering any exterior cleaning process make sure to ask questions and verify.

I welcome the opportunity to clean your roof with my softwash/no-pressure/non-pressure cleaning process.

Cedar Shake Roof Cleaning in Des Moines Iowa
Cedar Shake Roof before & after cleaning

Meet Bruce

50 Years of Experience &
Over 2,000 Shake Roofs Cleaned

Bruce Sullivan has over 50 years of experience in maintaining, cleaning, and restoring cedar shake roofs. Making him one of the top authorities on cedar shake roofs in the US.

Watch the Cedar Shakes Cleaning Process in Action in this video

Play Video about Roof Cleaning How to Remove Moss, Lichen, Fungi from a Cedar Roof Sullivan Roof


What can I say? Bruce and Keith provided an exceptional service, and they are really nice guys too. Found out at the last minute they were in Minneapolis, and they fit me in for a cedar shake roof cleaning the next evening after their regular job was done. Even cleaned up my gutters, small fence, and small deck at no charge. The place looks outstanding! Highly recommended.

Mike Richards

I highly recommend this business. Due to the work performed we are going to get another 10-14 years out of our cedar shake roof. We were told by some roofing companies that the roof should be replaced in 2 years. I lucked out and found Sullivan Roof Cleaning while researching companies that perform this service, and was pleased to learn that the company does work outside of Iowa. If you need your cedar shakes cleaned, go with Sullivan Roof Cleaning.

Eric Oelrich, 
St Cloud, MN

Bruce did a great job cleaning the whole exterior of my house. The roof has new life! It looks practically brand new. All the mold and moss on the roof, on the gutters, under the eaves, completely gone. He exceeded all our expectations. When he tells you what he can do for your house, you can believe and trust him. Great guy, great service.

Stuart Malone
Kansas City, MO


Cedar shakes are organic. Though a resilient material. Being organic they need to be maintained. Over time, like any organic material that are subjected to weather elements, they reach a stage of deterioration. Like UV exposure, moisture and seasonal changes. Which results in moss, mold, mildew, lichen and brown rot fungi. These infestations need to be removed to further preserve the integrity of the cedar shake.
The proper way to clean a cedar shake roof is from a ladder. By spraying a special formulated solution onto the shakes and then rinsed with a garden hose pressure. Best done by a professional cedar shake roof cleaner. Not DIY recommended.
No. Pressure washer will require walking on the shakes, which will harm them, and even at its lowest setting will also damage the shakes.
On average, cedar shakes should be cleaned every 10 ten years. Subjective to the grade of the shakes and the amount of surrounding tree cover.
Avoiding walking on a cedar shake roof, other than for repairs.
Never seal a cedar shake roof. Cedar shakes need to breathe. They expand and contract in rain conditions. Seal will shorten the lifespan, to the point of premature replacement.
Staining has no real preserve value and can also harm the integrity of shakes, as stated, they need to be able to breathe. Also, if the shakes are not properly cleaned staining can seal the deteriorating infestation within the shakes.
Depending on the grade of the shakes and installation, and if maintained properly, 40 to 60 years.

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