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Rough Opening Width (in.)
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Outside Frame Length (in.)
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Outside Flashing Length (in.)

How Do I Measure a Skylight?

Learn how to measure a skylight for replacement from inside or outside your home.

Deck Mount Skylights

Access the beauty of daylight, sky views and a spacious home with VELUX Deck Mounted Skylights. This economical choice gives you durability that can take nature head on – perfect for transforming your space in more ways than one!

Install with Velux flashing for 10 Year No-Leak Warranty. 

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What are Deck Mount Skylights?

Deck mount skylights are a specific type of skylight installation where the skylight unit is mounted directly onto the surface of the roof deck. They are a popular choice for many homes due to their sleek design and efficient installation process.

What is the difference between curb and deck mounted skylights?

Unlike curb-mounted skylights, which are installed on a raised frame, deck mount skylights sit flush with the roofline. This design typically involves a lower profile, blending seamlessly with the roof for a more integrated and aesthetically pleasing look.

How are deck mount skylights installed? Do they require flashing?

Deck mounted skylights are fastened directly to the roof decking material. The installation process requires precision to ensure a watertight seal, making professional installation recommended. They are usually surrounded by flashing – a weatherproofing material that helps to divert water away from the skylight and prevent leaks. There are also deck mounted self-flashing skylights, which do not require rubber flashing underlayments.

Deck Mounted Skylights Benefits and Features

  • Aesthetic Appeal: Their low-profile design offers a sleek, modern look that can enhance the architectural beauty of a home.
  • Improved Natural Light: Like other skylights, they allow for abundant natural light, transforming interior spaces.
  • Energy Efficiency: Many modern deck mount skylights come with energy-efficient features, such as low-E coatings, that can help reduce heat gain and loss.
  • Ventilation Options: Some models offer ventilation features, providing fresh air and improved air circulation in the home.