Roof Impact Resistance Ratings

The difference between the ratings is that class 3 shingles withstand a smaller steel ball dropped from a lower height and likewise for class 2.

Roof impact resistance ratings.

If you re considering using iko shingles on the advice of your roofing contractor it could be a decent choice but you may want to look into a higher rated. 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. Those with the least resistance earn a class 1 rating. The ul 2218 impact test was developed in conjunction with insurance industry leaders.

Ul standard 2218 describes a series of tests which involve dropping steel balls from various heights onto roofing materials and then measuring whether the material cracks. Class 4 materials are those proven to have the highest resistance to damage caused by hail for instance. What is impact resistant roofing. Which roof coverings qualify for a roof discount.

Gaf ir shingles meet the highest impact resistance rating. Roofing materials are rated based on their ability to absorb high impact contact from hail or flying debris. Roof coverings that have passed the ul standard 2218 test are classified by ul as either class 1 2 3 or 4. Aging or similar effects on the impact resistance of prepared roof covering materials.

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. Does not have a class 4 impact resistance rating. Class 1 class 2 class 3 and class 4. While class 4 is the highest rating for impact resistance there are also lower ratings a shingle can receive such as class 3 and class 2.

Overall iko shingles have poor consumer ratings but the company is working to improve their products. Gaf ir shingles pass class 4 see illustration below the highest rating possible. It s based on dropping a 2 steel ball from 20 onto the top of a shingle to see whether the shingle cracks. Most roofing material with a class 4 impact rating is considered impact resistant roofing.

When it comes to shingles class 4 shingles are the highest classification you can get when it comes to hail damage resistance. The benefits of northgate s sbs modified formula include a class 4 impact resistance rating the industry s highest superior weatherability and improved granule adhesion which make this arguably the most durable shingle in the industry. In an effort to cut back on claims insurance companies have started to offer incentives for homeowners choosing to install impact resistant roofing. They are associated with the ul 2218 impact test which involves dropping a two inch steel ball from 20 feet high onto the shingle and examining whether the shingle cracks or not.

The weakest material receives a rating of one and the material that can absorb the most impact enjoys a 4 rating. 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. If you live in an area that s prone to hail this is the shingle you need.