FREQUENTLY ASKED QUESTIONS
WHAT IS THE CLASS A FIRE RATING?WHAT IS THE BEST RATING?
Fire ratings (UL 790 testing protocol) are granted at one of three levels: Class A, Class B, and Class C. Class A is the highest rating a product can receive. The Class A Rating indicates the product has equaled the testing industry's most stringent fire resistance standard, a measure of how the roof will perform in severe fire conditions. CeDUR boasts a Class A Fire Rating without the need of a special fire resistant underlayment. View our Class A burning brand fire test certification video:
Why are CeDUR Shakes so resistant to fire?
Through our State of the Art Polyurethane manufacturing process we are able to engineer a product that is highly insulative and extremely resistant to fire. Natural wood shakes ignite at 375 degrees, the temperature on our Class A burn test reached a temperature in excess of 1,400 degrees and CeDUR did not ignite. Through our patented manufacturing process CeDUR shakes achieve a Class A Fire Rating without the use of a special fire resistant underlayment. Our products are solid throughout with fire retardant embedded within each shake and no cavity back. Discerning homeowners and industry professionals choose CeDUR because of our extreme fire resistance and stunning wood beauty.
WHAT IS THE UNDERWITERS LABORATORIES, INC. (UL) 2218 IMPACT TEST AND HOW DO CEDUR SHAKES RATE?
There are four impact resistance ratings from 1 to 4, with 4 being the most impact resistant. In the Class 4 test, a 2 inch steel ball is dropped from a height of 20 feet on multiple surface points of a CeDUR Shake. CeDUR did not incur damage from the steel ball and passed the test with a Class 4 Impact Rating.
HOW DOES CEDUR PERFORM IN HIGH WIND AREAS?
CeDUR is certified to a wind speed of 115 miles per hour (3 second gust) with a mean roof height no greater than 40 feet. Above 115 mile per hour wind resistance, installations are considered high wind and CeDUR should be consulted for proper design. By decreasing the exposure we are able to withstand greater wind speed. CeDUR is warrantied for wind speeds up to 90 miles per hour. For more information contact the CeDUR Technical Team at (720) 974-9200.
HOW LONG HAVE CEDUR SHAKE BEEN ON THE MARKET?
Since 1998 CeDUR has been one of the leaders in the composite synthetic roofing product market. For 20 years CeDUR has proven itself a reliable and dependable roofing material in one of nature's toughest testing grounds -the Western United States- where hail, wind, rain, fire, and snow conspire against all things man made. Learn more about us here.
DO I NEED TO WORRY ABOUT THE STRUCTURAL CAPABILITY OF MY ROOF FRAMING WHEN I REROOF WITH CEDUR SHAKES?
CeDUR weighs only 170 lbs. per roofing square. There should be no structural concerns at this weight.
HOW MUCH WATER DOES THE CEDUR SHAKE ABSORB?
Very low water absorption, eliminates freeze/thaw cycle effects.
WHAT IS THE BEST WAY TO FIND A CONTRACTOR TO INSTALL CEDUR?
CeDUR has established a strong network of roofing contractors that represent the highest standard of excellence, quality, and knowledge in the residential roofing industry. If you need assistance choosing a quality local roofing contractor contact CeDUR to help you choose.
CAN CEDUR SHAKES BE INSTALLED IN COLD WEATHER?
Yes, CeDUR can be installed in cold weather. Extra care should be taken when installations occur in temperatures below 40°F (4.4°C).
CAN CEDUR BE INSTALLED OVER EXISTING ROOFING MATERIALS LIKE ASPHALT OR WOOD SHAKES?
No. CeDUR should not be installed over existing roofing materials. Improper installation will void the warranty.
HOW IS THE CUT EDGE OF A CEDUR SHAKE SEALED AGAINST MOISTURE?
No sealant is required on cut surfaces and no repair is required if CeDUR is cut or chipped because our product is developed to prevent moisture intrusion with Closed Cell Technology and features color through pigmentation and no cavity back.
HOW IS THE CEDUR SHAKE MANUFACTURED?
CeDUR is manufactured in Colorado using a Reaction Injection Molding (RIM) system. This is a proven high quality manufacturing process in Polyurethane Technology.