What Class 4 means
Class 4 is the highest classification within UL 2218, a laboratory impact test that drops a steel ball onto a shingle sample and rates how it resists cracking. It’s a standardized way to compare impact resistance — not a guarantee against real hail, and not an appearance grade.
Always verify exact test details against the manufacturer’s current documentation before relying on a rating for a specific product.
Class 3 vs Class 4
UL 2218 rates shingles from Class 1 to Class 4. Class 4 withstands a larger impact in the test than Class 3. The difference is a matter of degree in a controlled test — both can still be marked or damaged by large real-world hail.
When asphalt fits vs metal or composite
Class 4 asphalt shingles are a budget-accessible way to add impact resistance while keeping a familiar look. Metal and composite options also resist impact, but each behaves differently under hail and carries different cost and appearance tradeoffs. Moving beyond asphalt does not automatically prevent damage.
Bryan can help you compare Class 4 asphalt, BRAVA composite, DECRA stone-coated steel, and standing seam metal for your home.
Cost drivers
- The specific Class 4 product and its warranty terms.
- Roof size, slope, and complexity.
- Underlayment and system details required for the product.
- Preparation and any decking or flashing work.
A short note on insurance
Some carriers offer credits or terms for impact-resistant roofing, but eligibility and savings vary. Ask your carrier about the exact product you’re considering. Bryan doesn’t promise savings or claim approval.
Getting started
Bryan helps you weigh whether a Class 4 upgrade fits your roof, priorities, and budget — then connects you with a vetted local contractor who confirms product availability, scope, and price. Your selected contractor handles installation.