Roof Impact Resistance Ratings

In an effort to cut back on claims insurance companies have started to offer incentives for homeowners choosing to install impact resistant roofing.

Roof impact resistance ratings.

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. Most roofing material with a class 4 impact rating is considered impact resistant roofing. Gaf ir shingles meet the highest impact resistance rating. Does not have a class 4 impact resistance rating.

Gaf ir shingles pass class 4 see illustration below the highest rating possible. When it comes to shingles class 4 shingles are the highest classification you can get when it comes to hail damage resistance. If you live in an area that s prone to hail this is the shingle you need. 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.

The weakest material receives a rating of one and the material that can absorb the most impact enjoys a 4 rating. Those with the least resistance earn a class 1 rating. The roofing materials that show the greatest resistance earn a class 4 rating. 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.

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. 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. 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. It s based on dropping a 2 steel ball from 20 onto the top of a shingle to see whether the shingle cracks.

Impact resistant roofing materials that have been tested to stand up to severe hailstorms. 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. Roofing materials are rated based on their ability to absorb high impact contact from hail or flying debris. Overall iko shingles have poor consumer ratings but the company is working to improve their products.

What is impact resistant roofing. Resistance to impact is identified by classes. 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. Class 4 materials are those proven to have the highest resistance to damage caused by hail for instance.

Which roof coverings qualify for a roof discount. 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 1 class 2 class 3 and class 4.