FAQ and More


Velux Skylights

How much does a skylight cost?

  • An average installation including the skylight, weatherproofing, all interior finish except for interior painting averages about $1,800.  Some will cost more and some will cost less. If you install more than one skylight, the unit price goes down. See all our skylight options here.

How much light will a skylight add to a room?

  • The biggest difference is in the quality of light. Light from a skylight brings the light down from the ceiling, lighting up all corners of the room evenly. A window can cause “shadows” in your room, but a skylight does not because the light is coming from overhead.

Do I need a Fresh Air skylight?

  • Venting skylights work best in sun heated rooms, bathrooms, kitchens, rooms with high cathedral ceilings, or rooms without any other ventilation. Natural ventilation does not add to your electrical bill, like an exhaust fan would, and can reduce your cooling utility bill. Learn more about venting skylights here.

How long does it take to install?

  • We typically figure one day per skylight for the installation. If we are installing more than one in a vaulted ceiling, we may put enough workmen on the job to do all in one day. After the installation, the drywaller will come in. He typically does not need an entire day to do his job.

Do I need to be home while the installation is being done?

  • Typically you will need to be home to let us in and to be available during the layout of the skylight opening in the ceiling. After that, you will be free to come and go at will.

Where is the serial number on my skylight?

  • Every VELUX skylight and roof window features a data plate mounted on the frame or stamped into the side of the exterior covers. This dataplate contains the product serial number, which tells the skylight model, glass type and date of manufacture.
  • When ordering accessories for existing products or requesting product servicing, you should locate this number prior to contacting us. Doing so will help us provide you with the best service possible.


Velux Sun Tunnels

How Much Does A Velux Sun Tunnel Skylight Cost?

  • A standard installation including the 10 inch, rigid tube VELUX SUN TUNNEL skylight and 43″ of tubing — with no unusual circumstances — can be installed for as little as $954. Excludes any costs due to interior repairs needed, paint and/or staining, and any permit fees or associated costs.

What Are Unusual Circumstances?

  • Some examples: A flat or steep roof. A tile, metal or stone coat roof. Additional tubing. Difficult access and/or attic or framing obstructions. A nominal fee will be applied for locations outside our normal service area.

How Long Does It Take To Install?

  • A standard installation — with no unusual circumstances — can take as little as two to three hours.

Do I Need To Be Home While The Installation Is Being Done?

  • Typically you will need to be home to let us in and to be available during the layout of the skylight opening in the ceiling. After that, you will be free to come and go at will.

How Much Light Will A Velux Sun Tunnel Skylight Provide?

  • A VELUX 14″ Sun Tunnel provides daylight levels equivalent to a 60-watt incandescent bulb on a cloudy day and up to four 100-watt bulbs on a sunny day. The positioning of the skylight and the length and/or bending of the tubing will affect the available light; we are not responsible for specific amount of light provided by the VELUX Sun Tunnel.

How Long Is The Warranty?

  • For a period of 10 years, VELUX warrants Sun Tunnel skylights and flashing will be free from defects in material and workmanship. VELUX warrants the reflective material of the tube for a period of 20 years.
  • Skylight Specialists offers a Five Year Leak Proof Warranty* on VELUX SUN TUNNEL installations. *Leak proof warranty is void if work is done by others in the vicinity of the SUN TUNNEL. No condensation warranty is in effect.

2022 Velux Residential Catalog

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VELUX Curb Mounted Skylights

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VELUX Deck Mounted Skylights

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VELUX Solar Powered Skylights

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Residential Sun Tunnels

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VELUX Blinds & Skylight Accessories

BlindsSkylight Accessories

VELUX Product Warranty Guide

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How to Receive Your Tax Credit

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VELUX Care and Maintenance Guide

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Skylight Condensation Guide

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Blind Retrofit Kit for Older VELUX Skylights

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KLR Instructions

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Helpful Links