Skylight Installation Cost in 2026: Fixed, Venting, and Tubular Options
A fixed skylight costs $1,500 to $4,000 installed in 2026. A venting (operable) skylight runs $2,500 to $6,500 installed. A tubular skylight (sun tunnel) runs $600 to $2,500 installed. The skylight installation cost depends on the unit size, whether it is fixed or venting, whether the curb is built during a reroofing (significantly cheaper) or cut into an existing roof, and ceiling type below (flat ceiling is simplest; cathedral or vaulted ceiling requires more carpentry work).
A skylight is the single most effective way to bring natural light into a room that cannot receive it through a conventional window. Bathrooms, hallways, interior rooms without exterior walls, and kitchens with blocked exposure all benefit dramatically from even a small skylight. The difference in feel between a naturally lit bathroom and an artificial-light-only bathroom is striking; natural light quality is irreplaceable by artificial fixtures regardless of fixture cost or quantity.
The roof cost calculator includes skylight cost in a combined reroofing and skylight installation estimate.
Open the Roof Calculator →Skylight Types and Cost in 2026
| Type | Size | Unit cost | Installed cost | Best for |
|---|---|---|---|---|
| Fixed (no operable sash) | 22×30 to 44×46 | $300 to $900 | $1,500 to $4,000 | Light only; lower cost; no condensation risk |
| Manual venting (hand crank) | 22×30 to 44×46 | $500 to $1,400 | $2,000 to $5,000 | Ventilation + light; bathroom; kitchen |
| Solar-powered venting (no wiring) | 22×46 to 44×46 | $800 to $1,600 | $2,500 to $5,500 | Most convenient; tax credit eligible |
| Electric venting (wired motor) | 22×46 to 44×46 | $900 to $2,200 | $3,000 to $6,500 | Fully automatic; rain sensor optional |
| Tubular (sun tunnel, 10-inch) | 10 inch diameter | $200 to $400 | $600 to $1,500 | Small rooms; hallways; closets; flat roofs |
| Tubular (sun tunnel, 14-inch) | 14 inch diameter | $350 to $600 | $900 to $2,500 | Medium rooms; bathroom; kitchen |
Re-roof Install vs Standalone: Big Cost Difference
Installing a skylight during an active reroofing project costs 30 to 50 percent less than installing a standalone skylight into an existing roof. When the roofing crew is already on the roof with the existing shingles partially or fully removed, the curb framing and flashing integration with the underlayment is straightforward; the skylight flashing kit integrates with the new shingle installation in a single pass. Installing into an existing roof requires: carefully removing the surrounding shingles, cutting the roof deck opening, framing the curb, installing the skylight and flashing, and re-integrating the surrounding shingles to eliminate leak points. The additional labor and care required for an existing-roof installation adds $500 to $1,500 to the installed cost. If a roof replacement is on the horizon within 3 to 5 years, scheduling the skylight installation to coincide with the reroofing produces significant savings. For roof replacement timing and coordination, our roof replacement guide covers the reroofing project. For chimney flashing that uses the same principle of curb and counter-flashing as a skylight, our chimney repair guide covers that adjacent roofing element.
Leak Prevention: Flashing Kits Are Non-Negotiable
Skylights have a historically justified reputation for leaking; most skylight leaks are not a product defect but an installation defect. The correct installation uses the skylight manufacturer’s own flashing kit (Velux, Fakro, and other major brands all sell roofing-material-specific flashing kits matched to the shingle type being installed). A properly flashed skylight with the manufacturer’s kit does not leak; a skylight flashed with generic step flashing by a roofer unfamiliar with the skylight manufacturer’s system commonly does. Always specify the manufacturer flashing kit when requesting skylight installation quotes and verify it is included in the installer’s scope of work. Many skylight manufacturers offer a no-leak warranty when their flashing kit is used; this warranty is voided if non-OEM flashing is substituted.
Three Real Skylight Projects
Example 1: Fixed skylight in a dark hallway in Raleigh, North Carolina
A homeowner adding a 22×46-inch fixed skylight to a second-story hallway that received no natural light. Installed as a standalone project (not during reroofing). Velux FS C06 fixed unit: $380. Contractor curb framing, deck cut, shingle removal and reinstallation: $1,400. Velux EDL flashing kit for asphalt shingles: $85. Interior shaft drywall and painting (angled shaft from ceiling to attic plane): $580. Total: $2,445. The hallway transformation: from a space that required artificial light at all hours to a daylit corridor from 9 AM to 3 PM without any fixture activation. The homeowner described the change as the best dollar-per-impact renovation they had done in 20 years of home ownership.
Example 2: Solar-powered venting skylight in a bathroom during reroofing in Minneapolis, Minnesota
A homeowner adding a 22×46-inch solar-powered venting Velux skylight to a master bathroom during a roof replacement project. Added to the roofing scope during the re-roof allowed integration with new underlayment and shingles at lower cost. Additional cost added to roofing contract: $980 (curb framing and flashing integration). Velux VS C06 solar unit (includes built-in solar panel that powers the motor): $1,050. Velux EDL flashing kit: $95. Interior finishing (flush trim ring): $180. Total addition to roofing project: $2,305. Standalone installation quote had been $4,100 for the same scope. Savings from timing with the re-roof: $1,795. Federal 30% Energy Efficient Home Improvement Tax Credit on the solar-powered unit: $315 credit. Net cost: $1,990 for a solar-powered venting skylight that also ventilates bathroom moisture automatically.
Example 3: Tubular skylights in a kitchen in Phoenix, Arizona
A homeowner adding two 14-inch Velux sun tunnels to a north-facing kitchen with poor natural light. Sun tunnels require a shorter installation than traditional skylights: a 10 to 14-inch round tube runs from the roof dome to a ceiling diffuser, making the installation through an attic straightforward when the attic clearance allows. Two units: $1,100 in materials. Installation labor (2 units, same day): $900. Interior diffuser trim (2): $80. Total: $2,080 for both sun tunnels. The kitchen daylight result: the equivalent of approximately 150-watt natural sunlight input through each 14-inch tube during peak daylight hours, which eliminated the need for artificial kitchen lighting from 9 AM to 3 PM on clear days. The homeowner estimated 4 to 5 hours per day of reduced kitchen lighting use, saving approximately $45/year in Arizona electricity at current rates.
The roof calculator estimates combined reroofing and skylight installation cost for the most favorable timing.
Calculate Skylight and Roof Cost →Frequently Asked Questions About Skylight Installation Cost
How much does it cost to install a skylight?
A fixed skylight costs $1,500 to $4,000 installed in 2026. A solar-powered or electric venting skylight costs $2,500 to $6,500 installed. Tubular skylights (sun tunnels) cost $600 to $2,500 installed for a 10 to 14-inch unit. Installing during a reroofing project saves $500 to $1,500 over standalone installation by eliminating the shingle removal and replacement labor. Solar-powered venting skylights qualify for the 30 percent federal Energy Efficient Home Improvement Tax Credit.
Do skylights always leak?
No. Properly installed skylights with manufacturer-specific flashing kits do not leak. The reputation for leaking comes from: improper flashing using generic materials rather than the manufacturer’s OEM flashing kit; installation by roofers unfamiliar with the specific product’s flashing system; and condensation dripping from cold glass (not a leak, but visually similar). Velux, Fakro, and other major brands offer no-leak warranties when their OEM flashing kits are used by their certified installers. Specifying the OEM flashing kit and using a manufacturer-certified installer is the most reliable way to avoid leaks.
What is the difference between a fixed and venting skylight?
A fixed skylight does not open; it provides natural light only and has no ventilation function. It costs less than a venting unit and has no moving parts to fail. A venting skylight opens (by hand crank, solar-powered motor, or electric motor) to allow warm air to escape from the space below, improving natural ventilation and reducing cooling load. Venting skylights are particularly valuable in bathrooms (moisture removal) and kitchens (cooking heat and steam removal). The solar-powered venting type has a built-in solar panel that powers the motor with no wiring required; it also typically includes a rain sensor that closes the skylight automatically when rain is detected.
What is a tubular skylight?
A tubular skylight (also called a sun tunnel or light tube) consists of a roof-mounted dome that captures sunlight, a highly reflective aluminum tube that channels the light through the attic space, and a ceiling-level diffuser that distributes the light into the room below. Tubular skylights are significantly less expensive than traditional skylights, require no structural modification to ceiling framing, and can light spaces that cannot accommodate a full skylight due to roof access or ceiling height constraints. The 10-inch diameter tube lights a 100 to 150 sq ft room; the 14-inch diameter tube lights 200 to 300 sq ft. They do not provide ventilation, views, or the dramatic visual of a large skylight opening.
Do skylights increase home value?
Skylights add perceived value to buyers who prioritize natural light, which is consistently ranked as one of the top home features in buyer preference surveys. However, skylights do not add a predictable, measurable dollar amount to appraised value the way square footage does. The value is in differentiation: homes with natural light in typically dark areas (bathrooms, hallways, interior rooms) show better, receive more positive feedback in showings, and can command a premium in competitive markets. In high-end homes, skylights in master bathrooms and kitchen areas are often expected features rather than upgrades.
Can I install a skylight in a cathedral ceiling?
Yes, but installation is more complex because there is no attic space between the roof deck and the ceiling finish; the skylight shaft (the tunnel from the ceiling to the roof) is either absent (ceiling immediately below the roof deck) or angled (with a short angled shaft). Cathedral ceiling skylights typically require flush installation with a curb that exits directly through the roof deck with no extended shaft, or a short angled shaft finished with drywall or wood trim. Labor cost is 20 to 40 percent higher than flat ceiling installation because of the precision carpentry required for the shaft reveal and the angled trim work at the ceiling.
What size skylight do I need?
A general guideline: skylight glazing area should be 5 to 15 percent of the floor area of the room being lit. A 150 sq ft bathroom benefits from one 22×46-inch skylight (7 sq ft of glass area = approximately 5% of 150 sq ft). Over-sized skylights (more than 15% of floor area) can produce excessive heat gain in hot climates and glare issues. For a room where heat gain is a concern (south-facing skylight in a hot climate), choose a skylight with a low solar heat gain coefficient (SHGC) to reduce summer heat gain while still admitting light. Velux’s product selector and the ENERGY STAR ratings are useful guides for climate-appropriate glazing selection.
Do skylights qualify for a federal tax credit?
Solar-powered venting skylights (with a built-in photovoltaic panel powering the motor) qualify for the 30 percent federal Energy Efficient Home Improvement Tax Credit under the ENERGY STAR program in 2026. Fixed and electric-wired skylights that meet ENERGY STAR requirements may also qualify for the credit on the product cost (not installation labor). The credit maximum is $600 per year for windows and skylights combined. Keep the ENERGY STAR certification documentation for the specific product purchased when filing IRS Form 5695 to claim the credit.
Related Calculators and Guides
For ENERGY STAR qualifying skylights and tax credit eligibility, the ENERGY STAR skylights page provides the product qualification database and climate zone recommendations. For manufacturer-specific flashing and installation requirements, Velux’s installation resource library covers their product-specific flashing kit installation procedures.