Class 4 Shingles: What the Rating Means

If you've shopped for a roof in Northwest Arkansas lately, you've probably seen the words Class 4. Salespeople use them, insurance letters mention them, and plenty of homeowners assume they mean a roof that hail can't touch. They don't. Here's what the rating actually says, and how to decide whether it makes sense for your house.

What the rating means

Class 4 is the highest impact-resistance classification under the UL 2218 testing standard, which is commonly used for roofing materials. In that test, steel balls are dropped onto a roofing sample from set heights, and the sample is checked for cracking. A material that passes the toughest level earns the Class 4 rating.

That's a useful measure. It tells you a product was built and tested to take impacts better than a standard shingle. It's a lab result, though, and a lab is not a hailstorm. Real hail varies in size, speed, angle and how long it lasts, and it hits a roof that has its own age and condition.

Class 4 does not mean hail-proof

Let's say it as plainly as possible. A Class 4 roof is not hail-proof. It can still be damaged in a severe storm. What the rating buys you is added resistance, so that a storm which might damage a standard shingle has a better chance of leaving an impact-resistant one in good shape.

Anyone who tells you a Class 4 roof will never need an inspection after a hailstorm is overselling. Roofing & Gutter Experts says the same thing on its Class 4 Roofing page: impact-resistant doesn't mean immune. After a significant storm, any roof deserves a look.

What to weigh before you decide

Class 4 shingles are one option among several, and the right answer depends on your house. These are the questions worth working through:

• Roof age and condition. A roof near the end of its life is a natural time to consider upgrading. A newer roof in good shape is a different conversation.
• Hail exposure. Northwest Arkansas gets hail, wind and severe storms through the year. How often your street and your tree cover see them is part of the math.
• Budget and plans. How long you expect to stay in the house, and what you can comfortably spend, matter as much as the product.
• Product, colour, style and warranty. Impact-resistant shingles come in more than one look, and warranties differ from product to product, so read the specific terms for the one you're considering.
• Insurer incentives. Some insurers may offer discounts or other considerations for qualifying impact-resistant roofing systems. Whether yours does depends on your carrier, your policy and the product.

That last point is worth a phone call before you decide. Don't assume an incentive exists, and don't assume it doesn't. Ask your carrier or agent what they offer for impact-resistant roofing, and what paperwork they'd want to see.

Looks and performance still matter

One worry homeowners have is that an impact-resistant shingle will look heavy or industrial. Today's Class 4 options are made to look like the shingles you'd expect on a quality roof, and they come in a range of colours and styles. The goal is added protection without giving up the appearance you want.

It's worth seeing real samples and finished roofs rather than choosing from a brochure. Colour reads differently in sun and shade, and against your brick or siding.

Comparing without being pushed

A fair comparison puts standard and impact-resistant systems side by side and lets the details of your home decide. Roofing & Gutter Experts says on its own site that it will help you compare them without pushing you toward a product that doesn't make sense for your house, and that it isn't simply choosing the most expensive option. That's the right attitude for any contractor to bring to this decision.

If your roof is older and has seen a few storms, a Class 4 shingle may be a sensible upgrade. If it's relatively new and the budget is tight, a standard replacement later on might make more sense. There isn't a single correct answer, and a good contractor will tell you which side of the line your house falls on.

A practical way to start

• Have the roof inspected so you know its real condition
• Ask for options for both standard and impact-resistant shingles
• Look at the warranty terms for each product in writing
• Call your insurance carrier or agent about any incentives for impact-resistant roofing
• Pick the colour from samples in daylight

For the full picture, read the Class 4 Roofing page, which covers the products and the questions above in more detail. To talk through your own roof with Emmanuel and the team in Springdale, use the Contact page or call 479-435-3837. Roofing & Gutter Experts is an Owens Corning Preferred Contractor serving Springdale, Fayetteville, Rogers, Bentonville, Bella Vista and Centerton.