What is a thermally broken skylight and why do you want one?

December 9, 2024

A thermally broken skylight is designed with an insulating barrier that separates the frame into two distinct layers. This advanced design plays a crucial role in minimizing heat transfer through the glass. During the colder months, it helps to prevent heat from escaping, keeping your home warmer and reducing the need for excessive heating. In the warmer months, it prevents heat from entering, keeping your interior cooler and reducing the strain on air conditioning systems. The result is a more comfortable living environment year-round and improved energy efficiency.


If your current skylight often ices up during the winter or develops condensation, it’s a clear sign that it may not be thermally broken. Without a thermal break, the skylight allows heat to move freely between the inside and outside, leading to discomfort and higher energy bills. Replacing an outdated or inefficient skylight with a thermally broken option can make a significant difference not just in comfort, but in long-term energy savings.


Thermally broken skylights are known for their energy-efficient properties, helping to reduce the amount of energy lost to the environment. By minimizing thermal transfer, they can lower heating and cooling costs, making them a smart investment for homeowners looking to improve sustainability and reduce their carbon footprint. Additionally, they can enhance the overall value of your home.


At NSS Exteriors, we are proud to install VELUX skylights, which come equipped with thermal breaks for superior insulation. These high-quality skylights also feature a 10-year no-leak warranty, ensuring peace of mind and protection from the elements. For even greater convenience and energy efficiency, they can also be fitted with solar blinds, providing an extra layer of insulation and light control while harnessing the power of the sun.


If you’re considering upgrading your skylight, let us help you explore the best options for your home. Call us at 708-529-6379 to discuss how a thermally broken VELUX skylight can improve your comfort, efficiency, and style.

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NSS Exteriors is featured in the October 2025 BIG Benuzzi's Industrial Guide. Read the article below, or download the PDF.
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