Our Cleaning Process

Cedar roofs have to be maintained/cleaned in order to last their full life span of 40-60 years. Doing so will prevent a premature roof replacement.

Cedar does not decay on its own. Decay is caused by moisture which over time cause moss, mold, mildew, fungi or lichen to grow.

Our non-pressure cleaning process stops the present deteriorating condition by removing the infestations. The cedar shakes are then returned back to their intended functioning condition.

Meaning no premature roof replacement or costly repairs will be needed. The cost of cleaning/treatment, in most cases is less then 5-7% of the roof replacement cost. We recommend that you have your roof cleaned every 7 to 10 years to maximize its life span.

Sullivan Cleaning Process

Bruce Sullivan Is one of the nations leading experts on Cedar Shake Roof Cleaning. He has developed an innovative eco-friendly process that cleans and preserves your cedar shakes without toxic chemicals, pressure washing or walking all over your roof. Watch the video or read the highlights of our process.

Davidson Roof Cleaning has been trained by Bruce and is an authorized member of Bruce Sullivans Certified Cedar Shakes Roof Cleaners Network serving Vancouver Island and the Mainland.

Our cleaning solution is safe, non toxic and will not harm your home, plants or pets.

• Formulated with a Citrus based cleaner.

• Contains a Fungicide, Mildewcide and Algaecide that kills all wood-destroying infestations such as moss, mold, mildew, fungi and; lichen.

• Contains a surfactant soap to help the solution cling to the shakes.

• Utilizes a Steam Processed Oil (3%) to re-hydrate the shakes. The natural oil in cedar tends to leach out over time causing the shakes to become brittle. Replenishing the oil makes the shakes resistant to moisture, insects and decay.

We do not use any form of pressure to clean your cedar shake roof.

A cedar shake roof should only be cleaned with garden-hose pressure. You should never pressure wash a wood roof. Aggressive pressure washing can damage the cedar shakes removing excessive amounts of wood fiber. The loss of fiber drastically decreases the life expectancy of the roof.

With our process we spray your roof with our safe, eco-friendly solution using a low pressure booster pump.

The solution dwells on your roof for about 20 minutes, killing all infestations and then is rinsed off using only garden-hose pressure. Every cedar shake is individually rinsed and cleaned!! All gutters are cleaned out after as well.

Your property and plants are carefully protected during the cleaning process.

All plants are pre-rinsed and rinsed during the cleaning process. In some cases, we will even tarp the plants to insure safety.

We clean up any mess we make before leaving. We rinse down all walkways, decks and siding to ensure your home is clean and tidy before we leave.