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How Long Do Fibreglass Skylight Sheets Last?

· 3 min read

Skylight Sheets Exposed to Sun vs No Exposed

Fibreglass skylight sheets, also known as fibreglass reinforced plastic (FRP) panels, are a popular choice for bringing natural light into buildings. They are lightweight, durable, and cost-effective, making them ideal for applications like sheds, greenhouses, and industrial roofs. But one of the most common questions about these sheets is: How long do they last?

In this blog post, we'll explore the lifespan of fibreglass skylight sheets.

What Are Fibreglass Skylight Sheets?​

Fibreglass skylight sheets are made from a combination of fibreglass strands and a resin binder, often coated with a gel layer for added protection against UV rays and weathering. They are designed to transmit natural light while providing structural strength and resistance to environmental factors.

Lifespan of Fibreglass Skylight Sheets​

The lifespan of fibreglass skylight sheets depends on several factors, including material quality, installation, and environmental conditions. Here's what the facts say:

  1. Industry-Standard Lifespan

    • High-quality fibreglass skylight sheets, when properly installed and maintained, typically last 10 to 15 years.

    • Some premium-grade sheets with UV-resistant coatings can last up to 20 years or more, depending on exposure to sunlight and weather conditions.

  2. Factors Affecting Lifespan

    • UV Exposure: Prolonged exposure to ultraviolet (UV) rays can cause yellowing, brittleness, and reduced light transmission over time. UV-resistant coatings significantly extend the lifespan.

    • Weather Conditions: Hail, heavy snow, and extreme temperature fluctuations can impact durability. Sheets in harsh climates may degrade faster.

    • Installation Quality: Improper installation, such as inadequate sealing or support, can lead to premature wear and damage.

    • Maintenance: Regular cleaning and inspection can help identify and address issues early, prolonging the sheets' lifespan.

  3. Degradation Signs

    • Yellowing or discoloration.

    • Reduced light transmission.

    • Cracking, chipping, or brittleness.

    • Water leakage due to sealant failure.

How to Maximize the Lifespan of Fibreglass Skylight Sheets​

To ensure your fibreglass skylight sheets last as long as possible, follow these evidence-based tips:

  1. Choose High-Quality Sheets

    • Opt for sheets with UV-resistant coatings and warranties from reputable manufacturers.

  2. Ensure Proper Installation

    • Hire experienced professionals to install the sheets, ensuring proper sealing, support, and alignment.

  3. Perform Regular Maintenance

    • Clean the sheets periodically to remove dirt, debris, and algae buildup.

    • Inspect for cracks, leaks, or sealant damage and address issues promptly.

  4. Protect from Physical Damage

    • Trim overhanging branches to prevent scratches or impact damage.

    • Avoid walking on the sheets, as this can cause cracks or breaks.

Conclusion​

Fibreglass skylight sheets are a durable and cost-effective solution for bringing natural light into buildings. When properly selected, installed, and maintained, they can last 10 to 15 years, with premium options lasting up to 20 years or more. Factors like UV exposure, weather conditions, and maintenance play a significant role in determining their lifespan.

By investing in high-quality materials and following best practices for installation and care, you can maximize the longevity of your fibreglass skylight sheets and enjoy their benefits for years to come.