When it comes to installing a skylight in your home, you have the option to do-it-yourself or find an installer near you. If you opt to do-it-yourself, installation instructions and videos are available on our website to help you along the way.

Installing your own skylights is no easy task so unless you are an expert, VELUX recommends requesting a consultation with an installer near you. You will end up with less hassle. Learn more on why you should choose a VELUX certified installer.

What should you expect during a consultation?

During a consultation, an installer will come and assess the room the skylights will be placed in. The installer will be able to tell you what size skylights and how many would be best for that room and what installation style would be most efficient (e.g. deck mounted or a curb mounted). The installer would also be able to review blind options with you to complete the look of your skylight.

What should you expect during installation?

A skylight installation happens in two phases: rooftop and interior. Depending on the circumstances, such as roof pitch, interior light shaft depth and shape, and weather, installations can take between a half-day and three days. The rooftop portion of the installation includes cutting the hole and fastening the skylight to the roof with the three layers of water protection found in VELUX deck and curb mount Skylights.

It takes about a half-day per skylight to complete the interior portion of the installation, which includes drywall and painting (unless an Instant Light Shaft is used). Installers will make every effort to protect your home’s interior from dust and other installation debris. Often, they will construct a curtain of plastic sheeting around the space in your ceiling where the skylight will be installed to contain dust.

What if I have a flat ceiling?

Flat ceilings require more drywall work than vaulted ceilings. If you have a flat ceiling, your installer will use drywall to build a shaft from the skylight to direct the daylight into the room. Your installer will paint the light shaft to match the surrounding ceiling area.

Watch our short video to see how a simple skylight light shaft can dramatically change your indoor environment.

Skylight Sizes

Solar Powered "Fresh Air" Skylight (VSS) - Deck Mounted

VSS Size Code

		C01	C04	C06	C08	M02	M04	M06	M08	S01	S06
Outside frame (W"xH")		211⁄2 x 273⁄8	211⁄2 x 383⁄8	211⁄2 x 461⁄4	211⁄2 x 5415⁄16	309⁄16 x 301⁄2	309⁄16 x 383⁄8	309⁄16 x 461⁄4	309⁄16 x 5415⁄16	443⁄4 x 273⁄8	443⁄4 x 461⁄4
Rough opening/ Finished frame (W"xH")		21 x 267⁄8	21 x 377⁄8	21 x 453⁄4	21 x 547⁄16	301⁄16 x 30	301⁄16 x 377⁄8	301⁄16 x 453⁄4	301⁄16 x 547⁄16	441⁄4 x 267⁄8	441⁄4 x 453⁄4

Solar Powered "Fresh Air" Skylight (VCS) - Curb Mounted

VCS Size Code

		2222	2234	2246	3030	3046	3434	4622	4646
Inside curb (W"xH")		221⁄2 x 221⁄2	221⁄2 x 341⁄2	221⁄2 x 461⁄2	301⁄2 x 301⁄2	301⁄2 x 461⁄2	341⁄2 x 341⁄2	461⁄2 x 221⁄2	461⁄2 x 461⁄2
Outside curb (W"xH")		251⁄2 x 251⁄2	251⁄2 x 371⁄2	251⁄2 x 491⁄2	331⁄2 x 331⁄2	331⁄2 x 491⁄2	371⁄2 x 371⁄2	491⁄2 x 251⁄2	491⁄2 x 491⁄2
Maximum skylight clearance (W"xH")		265⁄8 x 265⁄8	265⁄8 x 385⁄8	265⁄8 x 505⁄8	345⁄8 x 345⁄8	345⁄8 x 505⁄8	385⁄8 x 385⁄8	505⁄8 x 265⁄8	505⁄8 x 505⁄8