Class 1 class 2 class 3 class 4.
Ul class 4 roof.
The list of approved laboratories is shown below.
Stance of prepared roof covering materials with an impact resistance classification of.
Trudefinition duration flex shown in the color brownwood a class 4 impact resistant sbs roofing shingle from owens corning roofing.
Class 4 roofing shingles are considered to be a premium product and therefore may cost more than standard non impact resistant shingles.
With a regular shingle most of our competitors impact resistant shingles are only class 3 cracks and ruptures will appear from that kind of impact.
But what is most important for homeowners to know about a class iv roofing system is that it can save you big money on your homeowner s insurance premium with a class iv roof discount.
To meet class 4 impact criteria the shingle must show no evidence of fractures or cracks on the back side.
These shingles do not sacrifice style or aesthetic to earn their distinction as ul 2218 certified class 4 roof shingles.
In a class 4 ul 2218 impact resistance test a 2 inch steel ball is dropped from 20 feet to see if the shingles will fracture.
An oc storm roof is about 5 more than a standard asphalt roof.
With class 4 shingles there are no splits or tears.
Ul standard ul 2218 edition 2 impact resistance of prepared roof covering materials edition date.
Stormmaster shingles with core4 are ul 2218 class 4 impact rated.
Roof coverings that have passed the ul standard 2218 test are classified as either class 1 2 3 or 4.
They are more resistant to hail than normal shingles however medium sized hail will damage them.
Class iv roofing systems include many different types of roofing materials not just asphalt shingles such as tile metal or synthetic roofing.
One great option for class 4 impact shingles is cedur roofing shakes.
Underwriters laboratories ul is a not for profit independent testing organization that delivers the verified information to help consumers make accurate decisions about products like impact resistant roofing materials.
The test consists of simulating the speed and terminal velocity of a 2 hail stone falling from the sky.
This roof will qualify homeowners for a discount with most insurance companies.
As you contact various contractors or suppliers you should ask about roofing materials that meet ul standard 2218.
I have installed in accordance with the manufacturer s specifications on the above described residence a roof covering listed as complying with underwriters laboratory standard 2218 impact standard for impact resi.
Owens corning oc duration storm shingles are the most economical class 4 asphalt shingle on the market.
However due to the various benefits of class 4 impact resistant shingles the extra cost upfront may be a worthwhile investment if you live in an area where hail and wind storms frequently occur.
January 25 2010 ansi approved.
