If you've installed metal roofing for any length of time, you've likely taken a call like this:
"The roof still looks great, but I think the color might be a little lighter than when it was new. Can someone take a look?"
The homeowner isn't upset—they're uncertain. They simply want clarity.
Meanwhile, you're balancing two truths:
McElroy's Kynar 500® (PVDF) finish is one of the longest-performing paint systems in the industry.
Even the best finishes experience weathering over time.
This guide will help you explain the warranty in a clear, reassuring way that builds confidence and prevents misunderstandings later.
McElroy's Kynar 500® (PVDF) finish is engineered to resist chalking, fading, and surface breakdown better than most other paint systems. However, the warranty sets a measurable performance standard, not a promise of zero change.
| Warranty Feature | Term | Meaning |
|---|---|---|
| Film Integrity | 40 Years | The coating will not peel, crack, or lose adhesion. |
| Fade (Color Change) | 30 Years | Any color shift will stay within 4 ΔE Hunter units for sidewall applications and 5 ΔE Hunter units for roofing applications. |
| Chalk | 30 Years | Chalking will not exceed an ASTM D-4214 rating of 8 on roof surfaces. |
Highly saturated colors (like Dark Blue, Bright Red and Orange) naturally weather faster and therefore offer different warranties.
Each metal panel manufacturer handles warranties a bit differently. Once a claim is validated, McElroy may repair, repaint, or replace affected panels. The selected remedy is determined by McElroy.
Expectation vs. Definition: Homeowners often assume the word “warranty” means “no visible change.” However, metal roofing warranties define a level of change that is acceptable over time.
Visual vs. Measured Change: In some cases, color change or chalking may be noticeable to the eye, but still fall within warranty tolerance. This is especially true with Silicone Modified Polyester (SMP) paint systems.
Learn the truth behind metal roofing warranties.
Film Integrity: This refers to the coating staying bonded to the metal. If the coating peels or cracks, that could signal a warranty issue.
Color Retention and Chalking: These refer to how the roof looks as it ages. Some gradual color shift and surface chalking are normal and expected over time.
Over time, exposure to the elements can cause minor color shifts in even the best coatings—but that doesn't reduce your roof's protection or performance.
| Feature | Kynar 500® (PVDF) | SMP (Silicone-Modified Polyester) |
|---|---|---|
| Long-Term Color Retention | Excellent | Moderate, more noticeable change over time |
| Chalk Resistance | High | Can chalk sooner, especially in sunny climates |
| Film Durability | Long-lasting protection | Can become more brittle with age |
| Best Fit | Homeowners wanting long-term beauty | Projects where minimizing upfront cost is the priority |
"Both finishes work well. Kynar 500® simply holds its color and appearance longer. If long-term looks matter, it's the right choice. If cost is the priority and some visible change over time is okay, SMP could be a practical alternative for you. With that said, the cost difference is less than you might think. Why don't we price it both ways for you?"
Here is clear and reassuring language for homeowner conversations:
"We use McElroy's Kynar 500® finish because it offers outstanding long-term performance. The warranty covers against peeling or cracking for 40 years, and while all finishes weather over time, Kynar 500® ensures any color change remains minimal and uniform. The result is a roof that stays strong and visually appealing for decades."
When a homeowner reaches out with a concern about color change or chalking, your role isn't to determine whether it's covered under the warranty. You aren't expected to perform ΔE measurements or chalk tests — those are handled by the manufacturer if a claim is formally evaluated.
Your job is simply to listen, document, and initiate the review process.
Thank them for reaching out.
"I appreciate you letting us know. We'll take a look together."
Gather photos and project details.
Inform them of the next step.
"The next step is to submit these photos and project details to the manufacturer. They have the tools and testing methods to evaluate whether what we're seeing is normal weathering or something that may qualify as a warranty claim."
Set realistic expectations about timelines.
"Once we submit everything, the manufacturer will review it and determine what action, if any, is needed. That part of the process can take some time, but I'll keep you informed along the way."
You can reassure without dismissing:
"Some gradual softening of color happens naturally over time, especially on areas that receive more sun. But we'll still submit everything, so the manufacturer can confirm that it's within the expected range."
Keep the tone cooperative and confident:
"This is exactly the kind of situation the warranty review process was designed for. We'll submit the documentation to the manufacturer and see what they determine. If they believe it qualifies for coverage, they'll guide us on the next steps."
Being upfront about what the warranty covers prevents frustration later. It also positions you as a contractor who is honest, informed, and reliable. Homeowners remember trust. Trust becomes referrals. Referrals become long-term business stability.
McElroy's Kynar 500® finish provides outstanding roof performance and long-term appearance. When contractors explain the warranty clearly and kindly, homeowners feel informed, confident, and supported. Clear expectations today create satisfied clients tomorrow.