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You've seen it before: a WPC fence or deck that's just a few years old, already showing ugly, patchy discoloration. Some sections are bleached by the sun, while others have developed a murky, weathered look. This isn't just an eyesore—it's a business nightmare that leads to angry customers, costly replacements, and a damaged reputation.
The problem isn't WPC technology itself. The problem is how it's made. Understanding the root cause of fading is the first step to ensuring you never have to deal with a callback again.
The Core of the Problem: Two Manufacturing Methods, Two Different Outcomes
1. The Cheap Way: Single-Extrusion & Surface Coatings
Many low-cost manufacturers use a process called single-extrusion, where colorants and UV stabilizers are mixed directly into the composite core. To enhance the initial appearance, a thin paint or coating might be applied to the surface.
Why It Fails:
UV Attack: The sun's UV rays break down the surface coating, causing rapid, uneven fading.
Wear and Tear: As the surface erodes from foot traffic and weather, the unprotected, differently colored core is exposed, creating a blotchy appearance.
Inconsistent Protection: The UV stabilizers within the core are not concentrated where they're needed most—at the surface.
2. The Right Way: Full-Cap Co-Extrusion
At Treslam, we use advanced full-cap co-extrusion. This process creates a board with a strong, recycled core, permanently wrapped in a dedicated, high-performance "cap" layer.
Why It Succeeds:
Concentrated Defense: The protective cap is engineered with a high density of UV stabilizers and colorants, creating a thick, durable shield.
Total Encapsulation: The core is completely protected from moisture and UV, preventing the warping and fading that starts from within.
Uniform Wear: Even under heavy use, the color runs through the entire cap layer, so it never wears off to reveal a different color underneath.
3 Questions to Ask Your Supplier to Avoid Fading Disasters
Before you order, get clear answers to these make-or-break questions:
"Is your product single-extrusion or co-extrusion?"
Demand co-extrusion. It's non-negotiable for commercial-grade durability."What is your specific fade resistance warranty?"
Look for a measurable guarantee (e.g., "≤ 3 delta E fade after 15 years"), not just a vague promise."Can you provide a sample for a real-world test?"
A credible manufacturer will let you test their product. Leave a sample in the sun and rain for a few months—see for yourself.
The Treslam Guarantee: Color You Can Count On
We don't take chances with your projects. Our full-cap co-extruded WPC fencing and decking is built to withstand the harshest conditions without losing its beauty. We guarantee consistent color, batch after batch, for a flawless installation that stands the test of time.
Stop gambling with fading. Request a free sample of our fade-resistant WPC and see the difference true co-extrusion makes.