Ul Class 4 Impact Resistant Roof

Shingles on an impact resistant roof are designed to withstand high winds and hail damage and have a class 4 rating see below.

Ul class 4 impact resistant roof. 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. Class 4 roof covering is the most impact resistant roof and receives the highest premium discount. Meets class f wind rating from underwriters laboratories the highest wind rating possible dura grip adhesive seals each shingle tightly and reduces the risk of shingle blow off. 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.

Ul developed a test to rate the strength of roofing materials called the ul. 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. Summarizing the result we would be looking at for a class 3 roof is earned if the sample does not crack when hit twice in the same spot by a 1 75 inch diameter steel ball. Class 4 impact resistant roofing shingles.

Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4. Roof coverings must be tested and approved by underwriters laboratories ul or factory mutual fm and be rated as a class 1 2 3 or 4. Stance of prepared roof covering materials with an impact resistance classification of. But it is also important to note that the price you pay for a class 4 roof will mean your home or building is well.

What are impact resistant roofing materials. To meet class 4 impact criteria the shingle must show no evidence of fractures or cracks on the back side. Storms that bring hail airborne debris and high winds put your roof at risk for damage and installing impact resistant shingles may. Impact tested to prevent cracks and tears.

After performing the test roofing manufacturers would be scored based on the resistance of the material getting a rating from 1 least hail resistant to 4 most hail resistant. Passes the ul 2218 class 4 impact resistance test and may qualify for insurance discounts. Stormmaster shingles with core4 are ul 2218 class 4 impact rated. 1 excellent wind performance.

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. Class 1 class 2 class 3 class 4. Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles. Class four is an impact standard used to rate roofing materials like shingles and metal materials.