Are Tubular Skylights Durable?

Tubular skylights are generally considered to be durable, but like all building components, their longevity depends on the quality of materials used, the installation process, and the climate in which they are installed. Here’s a deeper look into their durability:

1. Key Factors Affecting Durability:

Materials:

• Lens or Dome: Tubular skylights typically feature a lens or dome made of durable materials such as acrylic, polycarbonate, or tempered glass.

  • Acrylic and polycarbonate are commonly used for the dome, offering resistance to weathering, UV rays, and impact. However, over time, acrylic can become yellowed or cloudy, reducing light transmission.
  • Tempered glass is more resistant to scratching and UV degradation but may be more expensive.

• Reflective Tube: The tube (which reflects the light into your home) is typically made of highly reflective materials such as aluminum or steel. The quality of the reflective coating plays a significant role in both the durability and performance of the skylight.

• Seals and Flashing: Just like traditional skylights, tubular skylights rely on good seals and flashing to keep out water. These materials should be resistant to weathering and designed to prevent leaks. If seals degrade over time, it can lead to water damage.

Installation:

Proper installation is crucial to ensuring the durability of tubular skylights. A professional installation ensures that the skylight is properly sealed, aligned, and flashed to prevent leaks and other issues.

• Quality of Installation: Incorrect installation, poor sealing, or improper flashing can lead to water infiltration, which might cause damage to the roof or interior. Always hire experienced professionals to install tubular skylights.

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2. Longevity and Maintenance of Tubular Skylights:

• Lifespan: Tubular skylights can last for 20-30 years or longer with proper care, depending on the materials used and environmental factors. High-quality materials and installation practices help ensure a longer lifespan.
• Maintenance:
  • Cleaning: The lens or dome may accumulate dirt, dust, and debris over time, which can reduce the amount of light coming through. Regular cleaning can help maintain optimal performance. However, the frequency of cleaning will depend on the location and the type of lens material.
  • Inspecting for Leaks: Periodically check the seals, dome, and flashing for signs of damage or wear. If seals begin to deteriorate, they should be replaced promptly to prevent water leaks.
  • Reflective Coating: The reflective tubing inside the skylight can lose its effectiveness if it gets dirty or damaged. Some tubular skylights have a protective coating that helps to keep the reflective surface clean and intact.

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3. Climate Considerations:

• UV Resistance: The lens or dome of a tubular skylight is exposed to direct sunlight, and over time, UV rays can cause acrylic or polycarbonate to degrade. Higher-quality acrylic or polycarbonate materials often come with UV protection, but even so, prolonged exposure to the sun can lead to discoloration or brittleness.
• Harsh Weather: Tubular skylights can withstand most weather conditions, but extremely harsh climates (like heavy snow, hail, or high winds) may impact their durability. Quality installation with strong seals and proper flashing helps to minimize the risks from such conditions.
• Heat and Humidity: In areas with extreme heat or humidity, ensure that your tubular skylight is designed to handle these conditions. For example, polycarbonate is often more heat-resistant than acrylic, which may be important for areas with high temperatures.

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4. Advantages of Tubular Skylights’ Durability:

• Low Maintenance: Compared to traditional skylights, tubular skylights require less maintenance because they are smaller and have fewer moving parts.
• Energy Efficiency: They are highly energy-efficient and can last longer without the need for frequent repairs or replacements. The reflective tube efficiently transfers light into the home, minimizing the risk of energy loss.
• Resilience: Tubular skylights are typically more resilient to roof leaks compared to traditional skylights due to their compact design and smaller opening.

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5. Common Issues That Can Affect Durability:

• Sealant Failure: Over time, the sealant around the skylight can degrade, leading to potential water leaks.
• Dome Degradation: Exposure to the elements can cause the dome to crack, yellow, or become cloudy, reducing its effectiveness.
• Debris Accumulation: If debris collects on the roof, it could block or damage the dome, diminishing light transmission.

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Conclusion:

Tubular skylights are durable and can last for 20-30 years or more, especially when made from high-quality materials like tempered glass and with proper installation. Regular maintenance, such as cleaning and checking for leaks, will help maximize their lifespan. While they may need some upkeep (like cleaning or occasional seal replacement), tubular skylights are a solid option for natural lighting and offer long-term value when properly maintained.