Roofs in St. Charles County and the greater St. Louis area deal with hail, straight-line winds, and freeze-thaw cycles every year. The roofing material you choose affects how well your home handles those storms and how often you end up filing claims. This guide compares the three options homeowners ask about most: standard architectural shingles, Class 4 impact-resistant shingles, and metal roofing.
What is the best roof for hail and wind in St. Louis?
For most homes in St. Charles, St. Peters, O’Fallon, and Wentzville, Class 4 impact-resistant architectural shingles offer the best balance of cost and storm protection. Metal roofing resists storms best overall but costs roughly two to three times as much as asphalt shingles. Standard architectural shingles are the most affordable but the most likely to be damaged by hail.
Standard vs. Class 4 vs. metal: side-by-side comparison
Standard architectural shingles |
Class 4 impact-resistant shingles |
Metal roofing |
|
|---|---|---|---|
| Hail resistance | Basic; vulnerable to bruising and granule loss | Tested to resist 2-inch steel ball impact (UL 2218 Class 4) | Resists penetration; may dent |
| Typical wind rating | Often 110-130 mph, depending on product and installation | Often 110-130 mph, depending on product and installation | Often well above 140 mph, depending on panel system |
| Typical lifespan | 20-30 years | 25-30+ years | 40-70 years |
| Cost compared to standard shingles | Baseline | Often 10-30% more | Often 2-3x more |
| Main downside | Most likely to need hail repair or replacement | Higher upfront cost; can still be damaged by large hail | Highest cost; dents may be cosmetic but can affect insurance |
Cost and lifespan figures are general industry ranges. Actual pricing depends on roof size, pitch, tear-off layers, and the specific product.
What does “Class 4 impact-resistant” actually mean?
Class 4 is the highest impact rating under UL 2218. To earn it, a shingle must survive a 2-inch steel ball dropped from 20 feet without cracking. It’s a lab test, not a promise: very large hail or hail driven by strong wind can still damage a Class 4 roof. The rating means the shingle is much more likely to resist the damage that triggers claims.
How does wind rating work for shingles?
Wind ratings come from standardized tests, and the number printed on the package depends on the shingle and how it is installed. Under ASTM D7158, Class H shingles are rated for winds up to 150 mph, and ASTM D3161 Class F is rated at 110 mph. Proper nailing and sealing matter as much as the product. Poor installation is a common reason shingles lift or crease in storms. See our guide to wind-damaged and creased asphalt shingles.
What kind of hail damages a roof?
Hail around 1 inch in diameter, about the size of a quarter, can begin to damage asphalt shingles. Larger hail, driven by wind, does more. Damage often shows up as bruised or dented spots, missing granules, and cracked shingles, and it isn’t always visible from the ground. After a storm, a professional inspection is the reliable way to find it.
Do Missouri insurers give discounts for impact-resistant shingles?
Some insurers offer premium discounts for Class 4 roofing, but whether you qualify and how much you save varies by company and by policy. Ask your insurer for a written quote before choosing a roof. Also ask whether your policy excludes cosmetic damage, such as dents on metal roofing, because that can affect what a claim covers. Our guides explain hail damage roof insurance claims and how to file a roof insurance claim in Missouri.
Which roof should you choose?
- Your roof is 15+ years old and you’ve had hail damage: Class 4 shingles are usually the best value, since you’re replacing the roof anyway and may qualify for an insurance discount.
- You plan to stay 15 or more years and want maximum durability: Metal offers the longest lifespan and strongest wind performance. Confirm your insurer’s cosmetic-damage policy first.
- You’re selling within about 5 years or working with a tight budget: Standard architectural shingles with a properly wind-rated installation are a reasonable choice.
- Your roof is fairly new and only partly damaged: A repair may be enough. Get an inspection before deciding on full replacement.
Does a new roof need a permit?
In many Missouri cities, yes, and requirements differ by city. Check our city-by-city roofing permit guide for Missouri before starting work.
Frequently Asked Questions
No, they reduce it. Class 4 shingles resist cracking and bruising from hail better than standard shingles, but very large or wind-driven hail can still cause damage.
Standard architectural shingles typically last 20-30 years. Hail, heat, ventilation problems, and storm exposure can shorten that.
Metal can be louder than shingles in heavy hail, but proper decking and underlayment reduce noise significantly.
It can be if you plan to stay in the home long-term. Metal lasts longest and handles wind well, but the upfront cost is highest, and some insurers treat cosmetic dents differently.
Yes. Horizon serves homeowners across the St. Louis area, including O’Fallon and Chesterfield.
Get your roof inspected
If your roof has taken a hit from hail or wind, or you’re planning a replacement and want to compare materials for your home, contact Horizon Roofing & Exteriors to schedule an inspection.
Brian Donohue
Brian Donohue is the owner of Horizon Roofing & Exteriors, the leading roofing company in St. Peters, Missouri, dedicated to delivering quality roofing solutions. With a strong background in project management, sales, and customer service, Brian has built a reputation for reliability and excellence in the roofing and construction industry.