Skylight installation costs $900 to $4,500 for a single unit, fully installed, with most homeowners paying around $1,800 to $2,500 for a standard fixed skylight on a sloped shingle roof. A tubular skylight (the smaller, sun-tunnel style) runs $750 to $1,500 installed, while a large vented or motorized skylight with flashing and interior trim can push to $5,000 or more. If you need to add structural framing or drywall work inside, budget an extra $500 to $1,500 on top of that.
If you are standing in a dark hallway or a windowless bathroom wishing you could flood the space with natural light, a skylight can genuinely transform a room. But the cost ranges are wide, and a poorly installed skylight is one of the most common sources of roof leaks homeowners face. This guide breaks down exactly what you will pay, what drives the price up or down, and how to make sure you get one that lasts.
Skylight Cost by Type
Not all skylights are created equal, and the type you choose has the biggest single impact on your final bill.
| Skylight Type | Unit Cost | Installed Cost |
|---|---|---|
| Tubular / Sun Tunnel | $150 to $500 | $750 to $1,500 |
| Fixed Skylight (small, up to 2x2 ft) | $200 to $600 | $900 to $1,800 |
| Fixed Skylight (standard, up to 2x4 ft) | $300 to $900 | $1,500 to $2,800 |
| Vented Manual Skylight | $400 to $1,200 | $1,800 to $3,500 |
| Vented Motorized / Electric | $800 to $2,500 | $2,500 to $5,500 |
| Custom or Roof Window (walk-on) | $1,500+ | $4,000 to $10,000+ |
Tubular skylights are the friendliest entry point. They use a small dome on the roof connected to a reflective tube that carries daylight down into a ceiling fixture. They require very little structural work and can be done in a half day.
Fixed skylights are the classic choice. They bring in a large, dramatic sweep of daylight but do not open. They are also the most prone to leaking if flashing is done wrong.
Vented skylights let you open them to release heat and humidity, which is especially valuable in bathrooms, kitchens, and attic spaces. Electric versions include rain sensors that automatically close when it rains.
What Factors Drive the Cost Up
You might get a quote for $1,200 and a neighbor might get $4,500 for what sounds like the same project. Here is why:
Roof pitch and complexity. A steeply pitched roof (over 7:12) requires more scaffolding, more careful cutting, and more complex flashing work. Flat roofs need a completely different type of skylight (called a curb-mounted skylight) and extra waterproofing. Expect to add $200 to $800 for either scenario.
Attic space between the roof and the ceiling. If your home has an attic, the installer needs to build a light shaft, a framed tunnel that carries light from the roof opening down through the attic to the ceiling. Simple shafts run $300 to $700. An angled or splayed shaft that widens as it drops can run $800 to $1,500 with drywall and paint.
Roof material. Asphalt shingles are the easiest to work with. Tile, slate, and metal roofs require specialty flashing kits and more skilled labor, adding $300 to $1,000 to the project.
Number of units on one trip. If you install two or three skylights during the same visit, the per-unit labor cost drops by 20 to 30 percent because the crew mobilization, scaffolding, and travel costs are shared.
Location in your home. A skylight over a first-floor room with a finished ceiling below involves more interior drywall work than one in a vaulted great room where the roof deck is visible.
Labor Costs for Skylight Installation
Labor is typically 40 to 60 percent of the total project cost. You should expect to pay:
- Roofing contractor labor: $45 to $85 per hour. Installing a standard fixed skylight takes 3 to 6 hours for a skilled crew.
- Carpenter for light shaft framing: $50 to $90 per hour. Add 2 to 6 hours for a typical attic shaft.
- Electrician (motorized units): $75 to $150 per hour. Wiring a motorized skylight with a switch or smart home integration adds 1 to 3 hours.
- Drywall and painting: $200 to $600, depending on the size of the shaft and whether you match existing texture.
On average, labor for a straightforward fixed skylight installation runs $600 to $1,200. Complex projects with long shafts, tile roofs, or electric openers can push labor to $2,000 or more.
Cost by State and Region
Like most roofing and home improvement work, skylight costs vary noticeably by region. Labor markets and material shipping costs are the main drivers.
| Region | Installed Cost Range |
|---|---|
| Northeast (NY, MA, CT, NJ) | $1,800 to $4,500 |
| Pacific Coast (CA, OR, WA) | $1,700 to $4,200 |
| Mountain West (CO, UT, AZ) | $1,400 to $3,500 |
| Upper Midwest (MN, WI, IL) | $1,300 to $3,200 |
| Southeast (FL, GA, SC, NC) | $1,100 to $2,800 |
| Texas / Oklahoma | $1,100 to $2,600 |
| Mid-Atlantic (PA, VA, MD) | $1,500 to $3,800 |
Tip for coastal homeowners: In hurricane-prone states like Florida, Texas Gulf Coast, and the Carolinas, look for skylights rated for high-wind impact. Some counties require impact-rated glazing for all new roof penetrations. The unit itself costs 30 to 50 percent more, but it can save your homeowner’s insurance policy from a headache.
VELUX vs. Other Brands: Does Brand Matter?
VELUX is the dominant brand in the skylight market and the one most roofing contractors are trained to install. Their products come with a 10-year installation guarantee (through certified installers), and their flashing systems are widely considered the industry benchmark. A VELUX curb-mounted skylight typically costs $300 to $900 for the unit; their deck-mounted models run $400 to $1,500 before installation.
Other brands worth knowing:
- Fakro: A strong European competitor, roughly 10 to 20 percent less expensive than VELUX for comparable products. Gaining market share in the US.
- ODL: Budget-friendly, available at big-box stores for $100 to $400. Suitable for simple projects, but you get lighter flashing kits and shorter warranties.
- Sun-Tek: A mid-tier option often used by production builders.
- Solatube: The market leader in tubular skylights (sun tunnels), with excellent quality and good dealer networks.
For most homeowners, VELUX or Fakro with a certified installer is the safest choice. The warranty and flashing quality are worth the slight premium because skylight leaks are expensive to repair.
Energy Efficiency and Tax Credits
Skylights have a complicated relationship with energy efficiency. A south-facing skylight in Minnesota lets in welcome winter heat but can cook your home in summer without the right glazing.
Look for the ENERGY STAR label. ENERGY STAR-certified skylights meet energy performance standards set by the U.S. Department of Energy that reduce heat gain in summer and heat loss in winter. The key specs to look for:
- U-factor (heat loss): Lower is better. Look for 0.45 or below in cold climates, 0.60 or below in mixed climates.
- Solar Heat Gain Coefficient (SHGC): How much solar heat comes through. Lower is better in hot climates; higher helps in heating climates.
Federal Tax Credit. Under current law (consult IRS.gov or your tax advisor for the latest rules), ENERGY STAR-certified skylights may qualify for the Energy Efficient Home Improvement Credit (25C), which covers 30 percent of the cost up to $600 per year for eligible products. Motorized vented skylights with solar-powered openers can also qualify under different energy categories.
Utility rebates. Many state utilities offer additional rebates for ENERGY STAR-certified windows and skylights. Check your utility’s website or the ENERGY STAR rebate finder to see what is available in your area.
DIY vs. Hiring a Pro
Installing a skylight yourself is theoretically possible if you are comfortable with roofing work, but it is one of the riskier DIY projects in home improvement. Here is the honest breakdown:
Arguments for DIY:
- Save $600 to $1,500 in labor
- Kits from VELUX and ODL come with detailed instructions
- Tubular skylights are relatively beginner-friendly
Arguments against DIY:
- A bad cut through your roof deck that hits a rafter requires a structural repair
- Improper flashing is the number one cause of skylight leaks, and they often show up years later
- Most homeowner’s insurance policies do not cover water damage from improper DIY installations
- Permits in most jurisdictions require a licensed contractor for roof penetrations
- Working on a pitched roof is genuinely dangerous
Bottom line: If you are experienced with roofing and comfortable at heights, a tubular skylight is a manageable DIY project. For fixed or vented skylights, the leak risk and permit requirements make hiring a pro the smarter financial decision in most cases.
How to Avoid the Most Common Skylight Problems
Skylights have a reputation for leaking, and it is not entirely undeserved. But most leaks come from installation errors, not the product itself. Here is what to watch for:
Insist on proper flashing. The flashing kit is the waterproof connection between the skylight frame and your roofing material. Always use a manufacturer-specific flashing kit (never generic step flashing alone), and confirm your installer is using it. Ask to see it before they close up the roof.
Check the curb height on flat roofs. Curb-mounted skylights on flat or low-slope roofs need a curb that rises at least 4 inches above the roof surface to prevent water pooling inside the unit. The International Building Code (IBC) referenced by FEMA disaster-proofing guidelines sets this minimum.
Avoid north-facing skylights in cold climates. A north-facing skylight gets almost no direct sun in winter and can be a major source of heat loss. It can also accumulate ice in northern states.
Plan for condensation. In humid climates, interior glass surfaces can develop condensation in winter. Low-e glazing reduces this significantly. Vented skylights that can open briefly help even more.
Get a permit. Most jurisdictions require a permit for skylight installation because it is a structural roof modification. A permit means an inspector signs off that the work was done correctly. Never let a contractor talk you out of pulling one.
Questions to Ask Your Installer
Before you sign a contract, ask these questions:
- Are you a certified installer for the brand you are recommending?
- What flashing kit are you using, and is it brand-specific to this unit?
- Does the installation include interior drywall and painting, or just the roof portion?
- What warranty do you offer on the installation itself (separate from the product warranty)?
- Will you handle the permit, or do I need to?
- What is your process if the unit leaks within the first year?
A contractor who cannot clearly answer question 2 or 5 is a red flag.
Skylight Repair vs. Replacement
If you have an existing skylight that is leaking or fogging between the panes, repair is sometimes possible and often cheaper than full replacement.
| Problem | Likely Fix | Approximate Cost |
|---|---|---|
| Leaking flashing | Re-flash the perimeter | $300 to $800 |
| Cracked or fogged glazing | Replace glazing panel only | $200 to $600 |
| Broken mechanism (vented units) | Replace operator/motor | $150 to $400 |
| Rotted curb framing | Replace curb and reflash | $400 to $1,200 |
| Old unit over 20 years old | Full replacement | $900 to $4,500 |
If your skylight is more than 15 to 20 years old and leaking, replacement is usually the better investment. Older polycarbonate domes become brittle and yellow, reducing light transmission and insulation value significantly.
Official Resources
Before starting a skylight project, these authoritative sources can help you make informed decisions:
- ENERGY STAR Skylight Specifications: energystar.gov for certified product listings and efficiency benchmarks
- Department of Energy Window and Skylight Guide: energy.gov/energysaver/energy-efficient-window-coverings for climate-zone recommendations
- IRS Energy Efficient Home Improvement Credit (Form 5695): irs.gov for current tax credit rules and limits
- National Fenestration Rating Council (NFRC): nfrc.org for understanding U-factor and SHGC ratings
- National Roofing Contractors Association (NRCA): nrca.net for finding qualified roofing contractors and installation standards
- Consumer Product Safety Commission: cpsc.gov for safety standards related to glazing materials
- Your state’s contractor licensing board: Search “[your state] contractor license lookup” to verify your roofer is properly licensed before signing anything