Hail Ratings & Your Roof

Hail Proof Roof?

No roofing material is fully hail proof.  If anyone saw or was involved in the hailstorms that went through Minnesota this summer, you know what we’re talking about.  There are hail-RESISTANT roofs.  These products have Class 1 through Class 4 hail-resistance ratings, 4 being the highest.  The ratings are given by taking a steel ball and dropping it from a pre-determined height and measuring the damage the roof has sustained.  The American Society of Testing and Materials (ASTM) perform the tests.

Many roofs carry this rating.  For steep slope, these roofs include some metal roofs, some tile and some composition shingles.  For flat roofs, these are some gravel-surfaced built-up, and some spray foam (with the right coating system), and just a few others.

Installing a Class IV hail resistant roof may qualify you for lower insurance premiums, depending on where you live.  Call your agent for verification.  Keep this in mind, too, not many agents and adjusters will know the specifics about hail resistant roofs. Consult a good roofing contractor.

Also, for specific warranty information, ask your roofing contractor to provide a sample warranty of the materials he installs.

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