Frequently Asked Questions

Q: Do all exterior wood surfaces, even cedar and red wood require regular maintenance and treatment?

A: Yes. While some species of wood are more resistant to decay than others, the natural resins in all species begin to deteriorate over time. This leaves the wood susceptible to moisture and the sun’s ultraviolet rays which can cause warping, splitting, and lichen or even moss growth.

Q: When treating a cedar shake roof, isn’t a common water sealer enough?

A: The answer is no. Water sealers offer short-term moisture protection only. Initially they will look good but will not last. For long-term protection, a broader based protective treatment is needed. Ideally, that treatment should replenish the wood’s natural resins, rejuvenate its original properties, and include a moss and mildew retardant*  along with an effective ultraviolet light inhibitor.

Q: Does CedarRenew contain all these protective features?

A: Yes. The CedarRenew treatment system:
  • Is environmentally friendly
  • Contains natural resins to penetrate and replenish natural wood oils
  • Contains a repellent to seal out rain and other forms of moisture. This still allows the wood to breathe so its protective shield will not crack, peel, or blister
  • Contains a light pigmentation that will restore the wood surface to a brown or gray color

Q: Exactly what is meant by “environmentally friendly?”

A: There are basically two types of exterior wood treatments available today; those that contain a hydrocarbon solvent base which is potentially hazardous to the environment, and CedarRenew, a new generation of treatments that contain no such solvents.

Q: When should a new roof be treated?

A: New roofs should be allowed to dry for approximately six months and evenly weathered before the first application.


Q: How often should CedarRenew be reapplied?

A: For optimum maintenance and maximum extension of the wood’s service life, cedar shake roofs should be retreated every 3 to 5 years.


Q: If the cedar shakes are older than 10 years is it worth treating?

A: Yes. The restorative properties of CedarRenew, combined with the other maintenance steps, can rejuvenate older cedar shakes, extending their natural service lives and significantly enhancing their appearance. Due to the high cost of lumber today and the dwindling forestlands, using CedarRenew also makes good economic and environmental sense.


Q: How can I tell if my roof should be treated or if it is too old and just needs to be replaced?

A: You can tell if your roof is treatable or not sometimes just by its age. If your roof has never been treated and is over 20 yours oid, you may very well need a new roof. The quality of  the shakes used and how the roof was originally installed can also determine how long the roof will last. If you are unsure, find someone who is knowledgable in cedar roofs for an accurate analysis.
If your roof is much older, you can sometimes determine if it is shot by  checking the butt ends of the shakes. If you grab them and they crumble, that would give you a clear indication the roof is shot and is probably in need of replacement.  

Why choose a water based product like CedarRenew?

Petroleum based products while effective are not environmentally conscious and most are considered  pesticides.  Some of these products have even been restricted in certain areas or states depending on their environmental standards.  The technology to create an effective and lasting roof maintenance choice is finally here.  The CedarRenew products are some of the safest and most environmentally friendly products available, designed with you, your landscaping and even your applicator in mind. For more information about other wood preservation options and their characteristics, go to our chart of preservative products.
*Inhibits growth unlike a preservative or pesticide and is effective on the surface of the wood.