Our Roof Cleaning Process
To achieve a thorough and long lasting clean of both your roof and your drainage system, our method is a four-step process.
- First, we carefully remove the bulk of the moss on the roof by hand. This is done using hand tools that are safe for your roof. Depending on the type and amount of moss on your roof, we will be able to remove between 80-95%. To read more on why we include this step in our process, see – Is treatment preparation neccesary?
- Next, we use air blowers to clear loose moss and debris from your roof, as well as clean the interior of your gutters.
- Now it is time to begin preparing for our sterilization treatment. We clean up any debris that may have fallen from the roof, as well as soak down any plants within a 10-foot radius of your roof.
- The last and most important step in our process is applying a chemical sterilization treatment that kills the remaining moss roots or spores that were not able to be safely removed in Step 1 of the process. This is done while one of our team members continues to rinse and dilute any off-spray that may come off of your roof.
Why this approach?
There are two main reasons we use this approach.
- Long term effectiveness. By beginning with manual removal, we are able to apply our solution directly to the toughest moss roots on your roof. This means we are able to eradicate your moss and algae infestation, the first time around. That’s why the majority of our return customers come back 4-6 years after their initial cleaning.
- Safe for your roof. First, this process is done WITHOUT the use of a pressure-washer or high-pressure cleaning, which has been proven to cause roof damage to both asphalt and concrete tile roofs. Second, our manual removal is never expected to remove ALL the moss from your roof, so we are able to be delicate with your roof. This is made possible by our roof cleaning solution that kills anything we can’t safely remove.
Is Treatment Preparation necessary?
You might ask, why not just treat the roof? While simply treating the roof may be appropriate in some circumstances, such as roofs that are just beginning to grow moss, the majority of mossy roofs greatly benefit from treatment preparation.
Here are just a few of the reasons why you should consider a company that combines careful manual removal with a roof cleaning solution.
- Better Long term results. By safely removing the majority of the moss from your roof before applying our roof cleaning solution, we are able to directly treat the roots and spores that would otherwise be covered and protected.
- Better looking results. Customers that opt for a treatment only option can expect to wait 6-12 months for your roof to look new again. Our method leaves your roof looking like new within weeks.
- No awkward transition period. Homeowners that opt for a treatment-only option can expect their gutters to fill up and clog at a rapid rate over the following 12 months. However, our hybrid approach will keep your gutter in substantially better shape throughout the next 12 months, given that majority of the moss and debris will have already been removed. With an average of 166 rainy days per year, it is no wonder moss, algae and lichen thrive in the Vancouver, B.C. area. As a homeowner, it is essential that you understand what causes moss, algae and lichen growth and what the proper methods are for removing it, in order to prevent your roof from prematurely deteriorating.
What Causes Moss, Algae & Lichen Growth
A number of factors contribute to organic growth on your roof. The primary factors are:
When moisture is consistently present on your roof, moss and algae growth is inevitable. Consequently, once moss begins to grow, it holds even more moisture on your roof, and thus, accelerates the rate of growth.
The amount of sunlight each aspect of the roof receives determines how long moisture is retained after rainfalls. North facing aspects and heavily treed properties receive significantly more shade, and require consistent monitoring for signs of new growth.
Proximity of Trees
Trees in close proximity to your roof allow moss spores to be easily transported to your roof. They also provide shade. A roof on a heavily treed property will usually need to be treated once every year.
Pine needles, leaves and branches all retain more moisture next to your roof. In many cases excessive debris buildup will create the perfect conditions for moss to grow.
Why Should Moss, Algae and Lichen be removed?
Shortened Roof Life:
Moss and algae (gloeocapsa magma) both retain moisture. As previously discussed, moisture increases the rate which moss, algae, mold and lichen grow. When moss begins to grow on your roof, the rhizoids (the root like anchoring structure of the moss) are embedded into asphalt shingles and use the inorganic material as a source of nutrients, causing the granular composition of the shingle to breakdown and loosen.
As granules are loosened, the core of the shingles is left exposed to the sun, causing the shingles to rapidly degrade. Once this occurs, the life of the roof can very quickly be reduced by up to ten years. Considering the average roof costs between $8000 to $12,000 to replace, we recommend a regular maintenance program to ensure your roof lasts the full length of its intended lifespan.
Increased Property Value:
When potential buyers first assess a house, a moss and algae covered roof is an immediate red flag. Considering the roof is a significant portion of the curb appeal of a house, a clean, well maintained roof is critical to giving buyers a great initial impression. Considering the replacement cost of a new roof and the reduced aesthetic appeal of the house, an unmaintained, moss covered roof can reduce property values by $10,000 or more.