Did you know that moss is harmful to your roof? The green surface or the moss acts like a sponge collecting moisture and seeping it underneath the shingles which results in the saturation of your roof sheathing over time and eventually causing the wood to rot and resulting in leaks. Not only that, moss fibres can easily spread from one section of the roof to another as it feeds off lime stone composite of asphalt shingles. At Pureways we specialize in protective roof coating treatment and moss removal. Our solution protects the shingles from moisture, curling, and premature deterioration resulting from moss growth. Roofs are considered one of the most important structural aspects of a house, and just like everything, they require on going maintenance to prolong their life expectancy! Whether your roof is growing moss and showing signs of deterioration or you are inquiring as a precautionary measure to prolong your asphalt shingle roof life,  our protective coating will contribute to the longevity of your roof.

Why does moss grow? Most common on the north facing elevations of roofs; Moss is a green organism that develops in humid areas on just about any roof surface, due to a lack of sun exposure and the humid environment which contributes to that growth. Moss feeds off the limestone composite of your asphalt shingles or the moisture and micro organisms and nutrients dropping from the trees causing growth on clay tile, concrete tile, and cedar shake roofs as well.

Whats the best solution? Depending on the type of roof material you have, each roof material requires a different formula and approach to ensure the moss growth and deterioration is addressed without causing any harm or damage to your roof. For example, a surface low ph soft wash solution would be ideal for clay tile roofs and concrete tile roofs however not suitable for asphalt shingles at it causes them to curl and deteriorate from the acidic properties. For that reason using an all-for-one approach doesn’t work and its important to consult with a roof expert before you proceed with a roof cleaning service to ensure you are receiving the appropriate treatment for your roof.



Cedar shakes are notorious for their ability to absorb moisture and develop mold, algae, and moss problems, specifically in shaded areas. At Pureways we use a citric based solution that contains a herbicide, an algaecide, as well as a special oil that helps rehydrate the shingles. The process is combined with soft wash cleaning and it is recommended once every 8 to 10 years. Unlike asphalt shingles, Cedar shakes are safe to brush and wash so as long as they are treated properly in the process. Some contractors also recommend installing Zinc Strips. Although Zinc Strips provide a budget friendly roof treatment solution, unfortunately can only prevent moss growth a couple of feet from where the zinc was installed and you will notice moss and algae on the rest of the roof.

We guarantee our work to be the highest quality in professionalism, quality and customer satisfaction. We encourage our clients to inspect our work before we leave to be sure that you are 100% satisfied with our work. We need to maintain our high standards of Pureways Services in Kelowna. We want you to have us back again, year after year. We also want to impress you to the point that you want to brag about us to your friends, family and neighbours. That’s how we have always grown our business, attitude and attention to detail.


As with any service that requires roof access, our first priority when providing our roof cleaning service is safety. Depending on the roof pitch, we would determine if the pitch is safe and compliant with WorksafeBC regulations to allow us to walk on the roof. If not, we use specialized equipment such as carbon fibre poles to reach and spray the upper sections from a ladder. All of our workers are equipped with the safety gear required by WorksafeBC to ensure we service your home without taking any risks with our crew members and avoiding any incidents that might occur. We use 5 point harnesses, life line assembly, lanyard, fall arrest extension, and heavy duty rated reusable anchors to ensure you tie off and walk safely on any pitched roof.

Nevertheless, in the rare occasion that we cannot safely access a roof section, all our technicians are licensed boom lift operators and we have heavy equipment readily available for hard to reach and inaccessible areas! Our team is highly experienced in roof cleaning and we service over 500 roofs every year. Their experience and awareness on roofs will give you the peace of mind that the service will be efficient, effective, and 100% Guaranteed.



Do not pressure wash your roof. Pressuring washing your roof will wash away the surface of the shingles which acts as a protective layer shielding the shingle composite from sun exposure. Additionally, all that excess moisture being forced in between the shingles will fuel moss growth specially if the moss was not previously treated.

Do not brush your roof. Many less experienced contractors would use a wire brush to remove the moss off your roof which leaves your shingles in much worse condition removing the surface grains and reducing the lifespan of your shingles. Additionally, some contractors will jump straight into brushing which only removes the surface area leaving the roots of the moss to grow again from underneath the shingles which is the origin of the moss growth as that is where moisture is trapped. Think of trying to pull a live weed from your lawn compared to pulling a dead one, the dead weed will easy pul out as the roots have less hold, same applies to roof moss which is why we always do treatment first to kill the moss. Most of the moss will wash off within 10 – 12 weeks on its own without any unnecessary contact with the roof shingles.

Do not chemical treat your roof with the wrong products. There are many products to treat moss in and around your lawn however when it comes to your roof, it is important to use the proper measurements for your solution depending on the type of roof to make sure your shingles don’t dry out and wrinkle up and your cedar shakes don’t get discoloured and chip. The main purpose for using chemical compounds is to change the pH levels of the roof environment to either basic or acidic. While both kill moss, an acidic formula for example would dry out the shingles and cause them to wrinkle as opposed to a base formula.



At Pureways property maintenance services in Kelowna, we take precautionary measures and use non-abrasive tools and compounds to make sure apply the proper treatment and remove it in the least abrasive method. Although our signature treatment process remains a trade secret, what we can tell you is that treating your roof and eliminating moss is a process that requires the proper blend of products, patience, and time to be done properly.

Asphalt shingle roofs are very sensitive to moisture. That is why sometime around the half-life of your roof and specifically in shaded areas, you start noticing moss and algae growth. Many home-owners make the mistake of pressure washing the surface which can have adverse effects. The excess water exposure actually does more harm than good and will cause more moss growth in the long run making it more difficult to get rid of the moss. Furthermore, using a push broom with stiff bristles can remove a substantial amount of the coarse surface grid which protects the asphalt and fibre glass material. For example, many companies that offer moss removal services will jump straight into brushing your roof which causes more harm than good. Not to mention without actually treating the moss with the appropriate solution, the moss will regrow in the same area.

At Pureways, we use a completely different approach when it comes to moss removal and roof treatment on shingle roofs. It is important to understand that just like it took years for the moss to develop on your roof, attempting to remove it using a quick fix method will not work and the process takes time and patience to remove the moss correctly without harming the integrity of your shingle roof.


When you request a quote, we contact you to go over all the details and then provide you with a complete service overview of our cleaning process and provide you with all the information you need to make a well informed decision regardless of who you end up choosing for your service. THERE ARE TWO THINGS WE PROMISE YOU, HONESTY AND HARD WORK


Your Satisfaction is Guaranteed.