Polycarbonate vs UV Protection

Polycarbonate is a popular material for roofing, glazing, and outdoor structures. One of its key benefits is its ability to block harmful UV (ultraviolet) radiation. But what does this really mean, and how does it work? Let’s break it down.

How Polycarbonate Blocks UV Rays

Most polycarbonate sheets come with a special coating that absorbs UV rays, stopping them from passing through. This means that even a thin sheet of polycarbonate provides excellent protection from both UVA and UVB rays. Unlike glass or acrylic, which need special treatment to block UV, polycarbonate naturally absorbs it.

Protecting the Material Itself

While polycarbonate protects people underneath from UV exposure, it also needs protection to maintain its quality. Over time, UV exposure can cause the material to yellow or degrade. To prevent this, manufacturers apply a thin, invisible UV-protective layer to the sheets. This coating helps extend the lifespan of polycarbonate, ensuring it remains clear and durable even after years of sun exposure. When looked after, polycarbonate can last up to 20 years.

The Role of Sunlight Angle

A polycarbonate roof offers great UV protection, but it doesn’t eliminate all sun exposure. Depending on the sun’s angle, direct sunlight may still reach exposed skin from the sides. To stay fully protected, consider wearing sunglasses, hats, or additional sun protection.

Benefits Over Other Materials

Polycarbonate has a clear advantage over other transparent materials like glass, acrylic, and fiberglass. While those materials often require additional UV protection treatments, polycarbonate naturally blocks UV rays while allowing visible light to pass through. This makes it ideal for structures like pool enclosures, patios, and conservatories, where people can enjoy natural light without worrying about direct UV exposure.

Installation Considerations

When installing polycarbonate sheets, it’s important to position them correctly. The side with the UV-protective coating should always face the sky. This ensures the sheet remains protected and retains its durability over time.

Conclusion

Polycarbonate provides two types of UV protection. First, it blocks harmful UV rays, keeping people safe underneath. Second, the UV-protective coating helps maintain the sheet’s quality and longevity. If you’re installing polycarbonate outdoors, always ensure you choose high-quality sheets with proper UV protection for the best results.