Impact-
Resistant.
Hail-resistant roofing systems designed for Colorado's severe weather. Class 4 impact ratings.
Colorado is one of the top three most hail-prone states in the country, and the Denver metro area sits in the heart of "Hail Alley" — the region stretching from Texas to South Dakota that sees the most frequent and severe hailstorms in North America. For Colorado property owners, impact-resistant roofing isn't just a premium upgrade; it's a smart financial decision that can pay for itself through reduced insurance premiums and avoided claim costs.
Impact-resistant roofing products are rated by the UL 2218 standard, which tests materials by dropping steel balls of various sizes from specified heights. Class 4 is the highest rating, indicating the material can withstand a 2-inch steel ball dropped from 20 feet without cracking or splitting — roughly equivalent to a 2-inch hailstone. Many Colorado insurance carriers offer discounts of 20–30% on homeowner's or commercial property premiums for Class 4 impact-resistant roofing, which can significantly offset the higher upfront cost of these materials. Class 4 products are available in asphalt shingles, metal roofing, synthetic slate, and other materials, providing options for virtually any architectural style.
ZMAC Construction specializes in impact-resistant roofing installation throughout the Denver metro area. We install Class 4 rated products from leading manufacturers including GAF Armor Shield II, Owens Corning Duration Storm, CertainTeed Landmark IR, and DECRA metal roofing. We can also help you document your new impact-resistant roof for your insurance carrier to ensure you receive the premium discount you're entitled to.
Key Features.
Class 4 Rated
Insurance Discounts
Premium Durability
Wind Resistant
FAQ.
Impact-resistant roofing installation follows the same process as standard roofing installation, but uses Class 4 rated materials throughout: removal of the existing roofing system (if applicable); inspection of the roof deck; installation of ice and water shield and underlayment; installation of the Class 4 impact-resistant material per manufacturer specifications; installation of all flashings and accessories; and final inspection. ZMAC provides documentation of the installed product for your insurance carrier, including the manufacturer's certification of the Class 4 rating.
Impact-resistant roofing project timelines are similar to standard roofing installations. A typical residential impact-resistant shingle replacement takes 1–3 business days. Metal impact-resistant roofing may take 3–7 days depending on the system and roof complexity. We provide a detailed project schedule before work begins and keep you informed throughout the installation.
Yes, ZMAC Construction provides free, no-obligation assessments and estimates for all impact-resistant roofing projects. Our assessment includes a review of your existing roof condition, current insurance policy, and available Class 4 product options, and results in a detailed written proposal with material options and pricing. We can also advise on the insurance premium discount process. Call 720-355-3780 or submit a request online to schedule your assessment.