What First N Class Roofing Means and How It Affects Your Home

First N Class roofing is a rating system that tells you how well a roof material resists fire, wind, and impact damage

When you see "First N Class" on roofing materials or contractor bids in South Carolina, it refers to underwriter classifications that measure how a roof performs under specific hazards. The "First" part means the material meets the highest fire-resistance standard. The "N" indicates the wind and impact rating. Understanding this classification helps you know what protection you're actually getting and whether the material meets building codes in your area.

These ratings come from testing done by organizations like Underwriters Laboratories (UL) and the American Society for Testing and Materials (ASTM). A contractor or supplier can show you the specific test results and certifications for any material they propose. The rating affects your homeowner's insurance premiums, your roof's lifespan under South Carolina weather, and whether your roof meets local building requirements.

Key Takeaways

• First N Class means a roof material has the highest fire rating and meets mid-to-high standards for wind and impact resistance.
• These ratings come from independent laboratory testing and are documented on the product's certification paperwork.
• Your insurance company may offer discounts for roofs with higher impact and wind ratings, especially in areas prone to hail or storms.
• South Carolina building codes in some counties require specific wind or impact ratings, so check your local requirements before choosing a material.
• The rating appears on the manufacturer's documentation, not on the roof itself, so ask your contractor to show you the certificates.

How the First N Class rating breaks down

The "First" designation means the material earned a Class A fire rating, the best available. This matters most if your home is near a wildland area or in a community with strict fire codes. In South Carolina's coastal regions and areas prone to brush fires, insurers sometimes require Class A materials.

The "N" refers to the wind and impact rating. An "N" rating means the material has passed impact tests (usually simulating hail) and wind-resistance tests, but sits below the highest "A" impact rating. For most South Carolina homeowners, an N rating is sufficient unless you live in a high-hail zone or your insurance company requires better. The difference in cost between N and A impact ratings can be significant, so knowing what your area actually needs prevents overpaying.

Some manufacturers also assign a number alongside the letter—like "First N Class 4"—where the number indicates additional performance metrics. Ask your contractor what the specific number means for the product they're recommending, because it varies by manufacturer.

Why First N Class matters for South Carolina homes

South Carolina's weather brings wind, hail, and occasional hurricanes. A roof rated for impact and wind resistance holds up better during storms and may reduce your insurance costs. Insurers in the state often offer premium discounts for roofs with higher impact ratings, especially if you live in areas that see frequent hail or tropical storms.

Building codes in some South Carolina counties—particularly in coastal areas—require minimum wind or impact ratings. Beaufort, Charleston, and Horry counties have stricter codes than inland areas. Before you choose a roofing material, check your county's building department website or call them directly to learn what ratings your roof must meet. Installing a roof that doesn't meet code can delay your project and cost money to replace.

The rating also affects how long your roof lasts under local conditions. A material rated for impact and wind resistance typically performs better through multiple storm seasons than a lower-rated alternative, which can mean fewer repairs and longer intervals between replacements.

Where to find First N Class certification

The certification comes from the manufacturer and should be included in the product documentation your contractor provides. You can ask to see the UL or ASTM test report before you sign a contract. The report shows exactly what tests the material passed and what conditions it was tested under.

Your contractor should be able to pull up the certification online or provide a printed copy. If they can't or won't show you the documentation, that's a red flag. Legitimate manufacturers publish their ratings publicly, and reputable contractors keep this information readily available for customers.

You can also contact the manufacturer directly with the product name and ask them to send you the certification. Most will email it to you within a day or two. This gives you independent confirmation of what your contractor is telling you about the material's performance.

First N Class versus other rating options

The highest impact rating is "A," which costs more than "N" but offers better hail resistance. If you live in an area that experiences frequent hail or your insurance company requires it, the extra cost may be worth it. If hail is rare in your area, an N rating usually provides adequate protection at a lower price.

Some materials carry lower ratings like "D" or no impact rating at all. These are cheaper upfront but may not meet your county's building code and typically don't may have access to for insurance discounts. In South Carolina, the jump from no rating to an N rating is usually more cost-effective than the jump from N to A, so N is often the practical middle ground.

Fire ratings also vary. Class A is the best, but some materials earn Class B or Class C. For most South Carolina homes outside high-fire-risk zones, Class A is standard practice, and many insurers expect it. Check your insurance policy to see whether they require a specific fire rating.

How First N Class affects your insurance and costs

Insurance companies in South Carolina often reduce premiums for roofs with higher impact and wind ratings. The discount varies by insurer and by your specific location, but it's common to see 5 to 15 percent reductions for impact-rated materials. Ask your insurance agent what discount, if any, applies to the specific material your contractor is proposing before you make a final decision.

The upfront cost of a First N Class roof is higher than a non-rated roof, but the insurance savings and longer lifespan often offset that difference over time. Get quotes from at least two contractors and ask each one to specify the rating of the material they're recommending. This lets you compare not just price but actual protection and long-term value.

If you're replacing a roof after a storm, your insurance company may cover part or all of the cost. In that case, the rating of the replacement material can affect whether the claim is paid in full. Some policies require that replacement materials meet the same or higher rating as the original roof.

Questions to ask your contractor about First N Class

Before hiring a contractor, ask them to show you the certification for any material they recommend. Ask what the specific rating means—fire, wind, and impact—and why they chose that material for your home. Ask whether your county's building code requires a specific rating and whether the material they're proposing meets it.

Ask whether the material qualifies for any insurance discounts and what documentation you'll need to provide to your insurer. Ask how the rating affects the warranty and whether the manufacturer backs the rating with a may provide. Ask what happens if the material doesn't perform as rated—who is responsible, and what recourse you have.

Get everything in writing, including the material name, the specific rating, and the certification details. This protects you if there's a dispute later about what was installed or whether it meets code.

Frequently Asked Questions

Does First N Class mean my roof won't leak or get damaged?

No. The rating measures how the material resists fire, wind, and impact under laboratory conditions. It doesn't may provide the roof won't leak or that it will never be damaged. Proper installation, maintenance, and ventilation also matter. A well-installed First N Class roof will perform better in storms than a poorly installed one with a higher rating.

What's the difference between First N Class and First A Class?

First A Class has the highest impact rating (A) instead of N. This means better hail resistance and typically a higher price. If you live in a high-hail area or your insurance requires it, First A Class is worth considering. For most South Carolina locations, First N Class is sufficient and more affordable.

Do I need First N Class if I live inland?

It depends on your county's building code and your insurance company's requirements. Inland counties usually have less strict codes than coastal areas, but some still require impact or wind ratings. Check with your county building department and your insurance agent before deciding. Even if not required, the rating may may have access to you for insurance discounts.

Can I see the First N Class rating on my roof after it's installed?

No. The rating is a laboratory classification, not something visible on the finished roof. The certification lives in the manufacturer's documentation and your contractor's records. Keep your copy of the certification for insurance claims and future reference.

What if my contractor says the material is First N Class but can't show me the certification?

Ask them to get it from the manufacturer before work begins. If they refuse or say it's not available, that's a sign to find a different contractor. Legitimate manufacturers always provide certification, and reputable contractors always have it on hand.