Cedar Roof Cleaning

Cedar Roof Cleaning - Don't replace it when you can clean it!

Why Maintenance Is Required!

Cedar does not decay on its own.  Decay is caused by exposure to moisture combined with moss, mold, mildew, lichen, or fungi.

Our non-pressure cleaning process stops the present deteriorating condition by removing the infestations.  The cedar shakes are returned to their intended functioning condition.  Thus, no premature roof replacement or costly repairs will be needed.

The cost of treatment, in most cases, is less that 10 % of the replacement cost.

We recommend that you have your cedar shake roof cleaned on average about every 8 to 10 years to maximize it's lifespan.

Our Cleaning Process

 Our solution is biodegradable and will break down into natural materials in the environment without causing harm. It contains a Fungicide, Mildewcide & Algaecide that kills all wood-destroying infestations such as moss, mold, mildew, algae, lichen & fungi. It also contains a surfactant soap to help the solution cling to the shakes.  It utilizes a steam processed oil (3%) to re-hydrate the shakes. The natural oils in cedar tend to leach out over time causing the shakes to become brittle. Replenishing the oil makes the shakes resistant to moisture, insects and decay.

What We Do

  • No walking on roof, no pressure washer
  • Removal of Stains, Mildew, Moss, Brown Rot Fungus and More
  • Our Process Will NOT Harm Your Landscaping, Family or Pets.

Why Contact Us?

  • Free Roof Cleaning/Roof Treatment estimate
  • Family owned & operated
  • Proven track record of healthy, preserved cedar roof
  • Certified and Insured

We Service All of Wisconsin!

Before and After Pictures

Frequently Asked Questions


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 when 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 soft wash/no-pressure Yes. Again they are all one and the same, which means the cleaning process is not high pressure.

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 it  in these terms it makes common sense.

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


Are you wondering about having your cedar roof cleaned? Are you wondering where to begin?

Step 1: Research. Educate yourself as much as possible about the maintenance needs of your cedar roof. It’s to your advantage to learn as much as possible about the properties of your cedar roof. The best places for unbiased cedar information is the US Forest Service and the Cedar Shake and Shingle Bureau.

Step 2: Find a Professional Cleaner. Roof cleaning is a job best left to the professionals. However, there is a difference between cedar roof cleaners and roof cleaners that will clean your cedar roof. You will want to make sure you hire a cedar roof cleaner that is knowledgeable about the delicate care your cedar roof needs.

Step 3: Use the Right Cleaning Process. Once you find your cedar roof cleaner, you will want to know what cleaning process he uses. There are 2 processes used to clean a roof. The first method is by walking on the roof and using a pressure washer. Avoid this process. It will damage your cedar shingles and you will wind up having to replace your roof earlier than expected. The second method is by using a garden hose pressure from the safety of a ladder. This is the approved method for cleaning a cedar roof. Make sure the roof cleaner uses this approved method for your roof.


If you do not maintain or clean your wood roof, it will end up needing to be prematurely replaced.  Wood destroying organisms will eat away at the cedar shakes and shingles, causing them to warp, crack, curl, and deteriorate before their expected lifespan.  A cedar wood roof can last 60 years or more, so long as it is maintained.  A wood roof that is not maintained will deteriorate and leak, and you will end up replacing it sooner than expected.

 Compare your cedar wood roof to your teeth.  Both are made of organic materials, and are designed to last a lifetime.  However, you have to keep your teeth clean and have them maintained in order to keep them your whole life.  If not, you’re going to lose your teeth and end up replacing them with dentures.   A wood roof is the same way.  You have to keep it clean and periodically maintained in order for it to last a lifetime. Otherwise, you’re going to have a costly replacement.

Think of maintaining your wood roof like routine car maintenance.  You take your car in periodically for a tune up, and your regularly change the oil in order to keep the engine running.  If you do nothing, your car breaks down, and you end up with costly repairs or buying a whole new car.  The same principle applies to your cedar roof.  It needs routine maintenance every 8 to 10 years to keep it working properly.


All the gunk is naturally occurring organic material. It is seen as one or more of the following:

  • Moss: This is the most prevalent, especially with abundant tree cover.
  • Lichen: This is very common and can be difficult to remove. You can usually tell you have lichen from the white, yellow, or red blotches on the wood.
  • Fungi: Known as brown rot fungi, it presents itself as a dark brown or black discoloration.

In addition to the organic material,  you may also be seeing evidence of tanning. This is when acids from the wood are being pulled up to the surface of the shingle to create a brown or black film. This is how the wood protects itself when it is unable to properly breathe due to excess moisture and organic buildup.

The organic material and tanning film should be removed in order to prolong the life of your cedar shakes and shingles.  by removing this material, you will allow the cedar wood to breathe. When cedar is unable to breathe, it starts to deteriorate.


Have you ever thought about why your cedar roof looks the way it does, and when it needs to be cleaned or replaced?

  • One of the easiest ways to know if your cedar roof needs cleaning, is to look at it after it rains. If the roof has a green hue, you can take it as a sign that moss, mold, and mildew have moved in. When this happens, the cedar roof should be cleaned asap.
  • The best way to tell if harmful fungi has made your cedar roof its home is by the roof’s color. If you see dark brown and black colors on your roof, there is a good chance its home to colonies of fungi, and should be cleaned asap.
  • Cedar contains natural preservatives that are depleted over time. As this happens, water enters the wood and causes cracks, providing a welcoming environment for algae, moss, mold, mildew and fungi to take root. These organic materials quickly grow, and deteriorate the wood as they draw food from it. Left unattended, their colonization will lead to premature roof failure.
  • Reduce the amount of shaded areas on your cedar roof by removing or trimming trees and branches. Heavily shaded areas tend to retain moisture for longer, giving algae, moss, mold, mildew, and fungi time to move in.
  • Never use a pressure washer on your cedar roof. The high pressure actually pushes and spreads the mold and fungus spores even deeper into the wood, making the situation worse. It can also loosen the shakes and shingles. Use nothing higher than garden hose pressure on the shingles. This will safely wash the fungus from your shakes and shingles and not cause any structural damage.
  • Properly maintained cedar roofs can last from 40 to 60 years or longer and will change color over the years. The cedar should change from a natural honey and cinnamon color to a seasoned and distinguished-looking silvery gray.


Proper cedar roof maintenance requires the yearly cleaning of the roof valleys which could be done at the same time your gutters are cleaned. Cedar shakes need to stay dry in order to function properly and to reach their full potential life span. Also it is important to keep all tree cover cut back from the cedar roof. Tree cover provides too much shade and moisture which doesn’t allow the cedar roof to breathe and stay dry. Also a cedar roof should have a cleaning every eight to ten years, which is subjective. Yearly maintenance of your cedar roof will go along ways to extending the life span of your roof. This is just being pro-active and will save you from a premature roof replacement. So keep the valleys clean of debris, keep any tree cover cut back and have a routine cleaning schedule in place and your cedar roof will last decades.


Thus it takes a special formulated solution to remove such, combined with the removal of algae, moss, mold and mildew, and lichen. So for someone to use lets say bleach, soap and some potpourri for a good smell effect will only do more harm to the cedar shakes and will not properly clean them.

To properly clean a cedar shakes roof there has to be something to kill the bacteriaalgaecidemildacide and fungicide mixed in a proper ratio for the infestations within the cedar shakes. There is no one product on the market today that will do that. They have to be mixed up special.


What many cedar shakes homeowners don’t know is that cedar roofs don’t decay, but they do weather. It has natural preservatives that resist moisture, decay and insect damage. Although in warm, humid climates and on heavily shaded roofs, algae, moss, mold, mildew, lichen and fungi’s will grow, because these organisms retain moisture the cedar will decay in time if not maintained.

Also to help the cedar shakes extend their lifespan there has to be a water based oil within the solution to replenish the natural oils that leach out over time. Cedar shakes have to breathe. Thus is has to be water based. They contract and expand that is why there are spaces between. Staining other than looks does little for the health of the shakes. Sealing should never be applied, again they have to breathe. Just a regular cleaning will serve just fine and allow the shakes to live out their full lifespan which can be anywhere from 40 to 60 years andeven longer.

You cannot properly clean a cedar shakes roof anytime of the year. The ambient air temperature has to be consistently 50 degrees or above for the shakes to properly thaw and release the infestations from their dormant state. To do other wise is a waste of time and money. You could possibly brighten them but you will not clean them.

Also, for you cedar shake homeowners. Cedar shakes are cost saving to your home. Cedar is a natural insulator against the environment; competitors can’t come close to the thermal efficiency of wood. In fact, cedar has twice the thermal resistivity (R-value) of asphalt, 5 times that of slate, 8 times that of concrete, and hundreds of times that of metal and aluminum.

I hope this will be informative for you cedar shakes homeowners. When hiring a cedar shakes roof cleaner check them out. What process do they use. You should never use high pressure or a power washer to clean a cedar roof,


There is a big difference between a person that can clean a cedar shakes roof and a person who is a Certifiedcedar shakes roof cleaner. That difference could be thousands of dollars in damage or replacement cost. On the other hand if they are a cedar shakes roof cleaner you can save thousands of dollars in premature roof replacement by simply maintaining your roof.