Roofing company do hereby certify that.
Hail resistant roof ul.
For fire resistance the standards are reversed with class a offering the best protection.
Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles.
For wind resistance these ratings are usually indicated by a letter with class f being the best and class a being the bare minimum.
Underwriters laboratories inc ul an independent for profit company has developed a series of laboratory test to measure how well roofing materials resist hail.
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.
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.
When it comes to impact resistance they use numbers instead of letters with class 4 being the best.
The corrugation helps deflect and hide any deformities that may occur from a hail storm.
Hail resistant is not hail proof.
With class 4 shingles there are no splits or tears.
In most cases a corrugated panel is the best option for pure protection.
Shingles on an impact resistant roof are designed to withstand high winds and hail damage and have a class 4 rating see below.
These tests are widely accepted by the roofing industry and the results are widely quoted in industry promotional materials.
Impact test ul 2218 intermittent flame testing ul 790 solar reflectance thermal emittance coating thickness astm c1549 and c1371 wind resistance astm d3161 wind uplift ul 1897 10x10 and 12x24 deck wind uplift ul 580 our building inspection services provide confidence that buildings meet critical code requirements.
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.
Storms that bring hail airborne debris and high winds put your roof at risk for damage and installing impact resistant shingles may.
What are hail ratings impact resistance ratings.
Here are the top hail resistant roofing options available for modern homes.
If you re one of the millions of american homeowners who live in an area where intense storms frequently occur then your choice of roofing shingles plays a critical role in protecting your roof from storm damage.
The last factor in determining a good choice for a hail resistant roof is choosing the type of metal panel itself.
Stance of prepared roof covering materials with an impact resistance.
It s important to remember that no roof is 100 immune to the damaging effects of an intense storm or some other catastrophic event.
