Getting answers about what to do regarding your cedar roof can be tough. Here are a few frequently asked questions to get you started.
Why don’t the natural oils and resins in cedar and redwood prevent this from happening? They do, at first, but the infrared rays from the sun draws out the oils and resins. This lessens their ability to protect the wood because when the oil and resins (extractives) come to the surface, rain will wash them away.
The main purpose of wood preservatives is to put the oil and resins back into the wood, which repels the water and hardens the shakes, allowing the shakes to breathe is essential.
The shingles will continue to get beaten on by UV Rays and this will cause the shingles to eventually crack and break apart. In addition, they can start to lift, cup, or curl – also leading to repair or replacement. And lastly, moss, mildew and algae will grow on the roof – not allowing moisture to escape, not only will it look awful – the shingles become very brittle.
Yes, inexperience and high pressure can damage cedar roofs. Many companies claim to know the process, but beware because cedar roof maintenance is a specialty craft. This is not a common trade and should only be carried out by professionals and specialists in this field.
Experience is a must! All staff go through extensive training to ensure proper methods are used. All they do is work on cedar roofs full time perfecting their craft.
Moss and algae are usually found on roofs when there is not enough airflow and sun on the roof to keep it dry. The closer in proximity to trees and overhaning brances cause more greens to grow on your roof.
If left on the roof, the moss, mildew and algae will hold significant moisture against the shingles and will not allow the wood to breathe or dry out. In turn, this will lead to significant roof deterioration.
Every cedar roof is different. Some are 12 years old and too late to treat, where others can be as old as 23 years and can be reconditioned. We offer a free written inspection report by a qualified cedar roof inspector. The longer you put it off the more repairs it will require. Call us for a free inspection.
Pigment is the primary ingredient that protects the wood from ultra-violet rays. Ultra-violet rays from the sun are the ones that “gray” the wood. When you see wood starting to gray, you can be sure UV is damaging it.
If you like the natural look, we will wash the shingles and then apply a clear coat. If you’d like the gray color immediately – we offer that in one of our pigment blends. Otherwise, we offer very natural and beautiful colors that are NOT orange or red, and maintain a very natural look.

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To arrange for a no obligation FREE Roof Evaluation report and discover how affordable prolonging the life of your roof is with ZK Cedar Roof Coatings, contact us today.