Skylight Window
Replacement Costs

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Skylight Windows - Replacement Window Costs - 2018 - Modernize

Skylight Window Costs

The average cost for a replacement skylight window installation is $900 to $2130 per window + labor  costs which can average around $38 per hour depending on your local window installers average price.


Skylight Windows

Skylight windows bring sunlight in through the roof of the home and often offer useful ventilation to let heat out during the warmer months of the year. Some skylight windows even serve as emergency exits.

skylight windows cost

Pros of Skylight Windows

  • Improved Attic Ventilation
    Skylight windows are one of the best options for ventilation and safety in an attic room with slanted ceilings. That’s because you can’t fit most standard windows in that angled setup without them leaking. Skylight windows are designed to keep the water out, but they will also help allow air into your home or even allow escaping during a fire if that’s a concern.
  • Increased Natural Light
    Although skylights are one of the least common windows used in homes today, they are still a great option for bringing sunlight in through the roof of the home.

Cons of Skylight Windows

  • Extra Maintenance
    Unlike most windows installed on a home, maintenance is vitally important for skylight windows. If they aren’t maintained properly they will eventually start leaking and cause issues in your home. Annually inspect your skylights from the roof while paying particular attention to the flashing surrounding the skylight.
  • Potentially Damaging UV Rays
    If you’re going to install a skylight window over top of furniture, carpeting or other items in your home that can be damaged by UV light you should consider a Low-E treatment to help keep out the more damaging rays. It will keep UV rays from making it into your home and help keep everything in better shape overall.

Types of Skylight Windows

There are several different types of skylight windows to choose from. Some open fully, others don’t open at all, and there are various options in between.

Fixed Skylights

Fixed skylights are nonmoving. These roof-mounted windows don’t open in any way and can’t be used for ventilation purposes. They tend to last the longest and require the least amount of maintenance.

Manual Venting

Manual venting skylights typically crank up and out to provide ventilation. They’re simple to operate and work similarly to an awning window. You crank the handle in one direction to open the skylight and crank it the other way to close it once again.

Electric Venting

An electric venting skylight works much the same as a manual, but it’s electrically powered. This is handy for skylights positioned in hard-to-reach areas. You press a button and the skylight opens, you push another button and it closes. Some even run off solar power and have rain sensors to open and shut the windows automatically depending on the weather conditions.

Three skylight windows installed in the roof of a home.

Roof Windows

Roof windows are the option you’ll want to choose for attic rooms with no flat walls. These windows open up and out all the way, offering the occupants a way out of the room in the event of a fire. They’re often required by code and they make an easier option than adding a dormer with a standard window.

Attic Ventilation

Skylight windows are one of the best options for ventilation and safety in an attic room with slanted ceilings. That’s because you can’t fit most standard windows in that angled setup without them leaking. Skylight windows are designed to keep the water out, but they will also help allow air into your home or even allow escaping during a fire if that’s a concern.

Skylights are a good option in upstairs bathrooms to let trapped humidity out, and they can let out summer heat to keep a house cooler as well.

Leaks aren’t an Issue

Most people who think about adding a skylight window to their home worry the skylight will leak and lead to water damage eventually. Improved flashing and skylight designs help make these sections of your roof watertight.

Consider a Low-E Treatment

If you’re going to install a skylight window over top of furniture, carpeting or other items in your home that can be damaged by UV light you should consider a Low-E treatment to help keep out the more damaging rays. It will keep UV rays from making it into your home and help keep everything in better shape overall.

Skylight Maintenance

Unlike most windows installed on a home, maintenance is vitally important for skylight windows. If they aren’t maintained properly they will eventually start leaking and cause issues in your home. Annually inspect your skylights from the roof while paying particular attention to the flashing surrounding the skylight.

Skylight windows are a nice option for accenting your home and bringing in more light; yet they can also ventilate a room or even provide an escape route. If you do decide to have a skylight window added to your home make sure that it’s sealed with flashing properly and consider adding in things like insulated glass and low-e treatments to help protect your home and keep it insulated.


Here are some other helpful pages to prepare you for your replacement window project.


Best Window Brands 

Cost for Window Replacement

Measuring Replacement Windows 

Standard Window Sizes

Types of Window Frames

When to Replace Windows 

Window Glass Repairs 

Window Rebates & Incentives 

Window Replacement Information

Window Replacement Contractors Near Me


Let us help you decide what type of replacement window you should choose for your window installation project below: 

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