Class 4 Shingles and Your Colorado Insurance Bill

In hail country, the shingle you choose changes your insurance math for the life of the roof. Here is how Class 4 ratings, carrier discounts and Colorado’s deductible rules actually work.

July 2026 · 5 min read · Castle Pines Roofing Co.

What Class 4 means. UL 2218 is the impact-resistance standard for roofing: a steel ball dropped from height, twice in the same spot, at increasing sizes. Class 4, the top rating, means the material took a 2-inch steel ball strike without cracking. That is roughly the energy of the hail that Castle Rock logged in June 2019, minutes south of Castle Pines.

The discount. Insurers price Colorado roofs for the hail they expect to replace. A roof that survives hail changes that math, and many Colorado carriers offer premium discounts for certified Class 4 roofs, industry sources report 15% to 35% off the dwelling portion of the premium, varying by carrier and policy. On a Castle Pines home, where dwelling coverage runs high, that discount compounds year after year for the life of the roof. Ask your agent specifically what your carrier offers; we supply the certification paperwork they will ask for.

The catch worth knowing. Some carriers pair Class 4 discounts with cosmetic-damage exclusions, meaning dents that do not cause leaks may not be covered on metal or some Class 4 products. Read what you sign, and ask the question directly: “Does this discount change what hail damage you will pay for?”

While we are talking insurance, two Colorado rules to keep handy. First: it is illegal for a roofer to waive or cover your deductible. The “free roof, we’ll eat the deductible” pitch is insurance fraud with your signature on it. Second: when an insurance claim is involved, you have the right to rescind a roofing contract within 72 hours of signing. A roofer who pressures you past either rule has told you everything you need to know.

Bottom line for Castle Pines. If a hail claim is already replacing your roof, upgrading to Class 4 at the same time is usually the cheapest that upgrade will ever be, the claim covers the base roof, you pay only the difference, and the discount starts working immediately. It is the rare roofing decision where the spreadsheet does most of the arguing.