Impact Resistant Roof Classes

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

Impact resistant roof classes.

Your roof is an essential part of your home or building and you want to be sure it is strong enough to take an impact. To qualify in texas as impact resistant roofing class 4 the roofing product must meet underwriters laboratory testing requirements under designation ul 2218. Class 4 roof covering is the most impact resistant roof and receives the highest premium discount. There are four testing classes that use four different steel ball sizes that range from 1 1 4 to 2.

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. Ir shingles are impact resistant not impact proof. Shingles with the class 4 rating have an impact resistance rating of ul 2218. Storms that bring hail airborne debris and high winds put your roof at risk for damage and installing impact resistant shingles may.

A class 4 roof covering offers the best hail protection and will receive the highest discounts on insurance premiums. The amount of discount for each class of roofing material is established on a company by company basis. Impact resistant roofing as defined in texas. So while an ir shingle may reduce these effects the real benefit lies in the rubberized material making your shingle less likely to crack from the impact.

A class 4 hail resistant roof is the most durable type of roofing on the market and will not rip tear or crack when exposed to heavy winds rain or hail. Impact tested to prevent cracks and tears. Products qualifying for impact resistant roofing credits. Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4.

What are impact resistant roofing materials. Impact resistant shingles and other roofing materials are designed to resist damage from hail and flying debris abuse that might damage ordinary shingles. The ul 2218 is the roofing industry standard for testing shingles against hail impact. Class 4 impact resistant roofing shingles.

After a hail storm your shingles may still experience some granular loss and dents at impact points. 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. 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. 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.