Installation Process

Expert installation made easy.

VELUX® skylight systems and Sun Tunnel® Skylights can be installed in flat or vaulted ceilings in two worry-free phases: rooftop and interior. The pros will recommend where skylight systems should be installed, so you can reap the maximum benefit from the natural light and fresh air they provide.

Installation Types

The Room

VELUX-trained pros will come inside for interior finish work and possible painting. If you have a flat ceiling, your installer will use drywall or other finish material to build a shaft from the skylight to direct the daylight into the room. This phase takes around half a day per skylight.

The Rooftop

VELUX-trained pros will cut a hole and fasten the VELUX skylight to the roof with three layers of protection to prevent leaks. Depending on the circumstances such as roof pitch and weather, the rooftop phase can take between one and three days.
2-3+ Days Total*

The Room

VELUX-trained pros will cut a hole in the ceiling to install the lower portion of the reflective tube between the roof and ceiling.

The Rooftop

VELUX-trained pros will cut a hole in the roof and install the top collar, the upper portion of the reflective tunnel, the lens and the flashing.
2 Hours*

The Room

There may be a small amount of interior drywall work depending on your replacement situation, but the majority of the replacement process will take place on the roof.

The Rooftop

VELUX-trained pros will get measurements from your existing skylights to ensure your replacements are a perfect fit, then they’ll replace your skylights
1 Day Total*

*Time estimates are based on averages. Project duration varies based on its complexity.

Get a Quote

Call us at 206-512-8419 or fill out the form to start your quote today.

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  • Yvonne Yao
    Can't believe we never reviewed them. I just referred someone to them and thought we should share our experience. We used this company to install 3 sun tubes with night lights. We were told that if we weren't happy with the results, they would refund our money. One tube did not seem to put out much light. They gave us a refund with no problems. However we noted that the tube functioned well in a different season (due to the change in angle of the light) so we sent them back the money. They know their stuff and and stand behind their products. We were thrilled with them from installation to the time we moved 5 years later. Their prices were competitive.
  • David Rogers
    My wife and I recently had 5 new Velux solar powered skylights w/shades installed for our home. Lead installer, Levi, and his co-worker, Jose, did a superb job of removing the existing skylights (from 1992) and installing the new ones. The guys were really professional, on time, very helpful in answering our questions and thorough in cleanup. They programmed our remotes so we can activate opening/closing the skylights and the shades. We highly recommend Seattle Skylights for anyone considering replacing old units or thinking about adding skylights for the first time.
  • Robert Duncan
    We recently had two skylights replaced and the team at Seattle Skylights/Roof Boss did a fantastic job. Great communication, competitive cost, installation was professional and efficient, and the finished skylights look and function perfectly. All-around excellent experience and highly recommended!