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Free skylight installation cost calculator for residential projects. Estimate typical installed cost bands by unit count, size band, skylight type, roof covering, installation complexity, interior finish scope, and regional labor.
Last updated: April 19, 2026
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Typical scheduling window
0.5 weeks
Weather, lead times, and interior protection can extend field time.
Notes
Hardware
Motors & operators
Vented units add wiring, rain sensors, and commissioning time where applicable.
Detail
Step flashing
Tile and metal often require more cuts, clips, and sealant labor than shingles.
Trim
Paint & casing
Cathedral ceilings may need long shafts, insulation, and vapor control.
Labor
Steep roofs
Tie-off, plank, and debris handling add hours when access is difficult.
Engineering
Reframes
Wider openings may require engineered headers and inspections beyond this calculator.
Risk
Dry-in windows
Rain delays and dry-in practices can extend calendar time versus labor hours.
2 units • medium • fixed • asphalt • straightforward access • paint & trim • South:
Materials
$572
Labor
$598
Permits & fees
$130
Total
$1,300
The calculator applies illustrative per-unit material bands by size and skylight type, scales with quantity, adjusts for roof covering and installation complexity, applies an interior finish scope factor, and uses a regional labor multiplier. The total is split across skylights and related materials, roofing integration labor, and permits or fees. Structural engineering, premium glazing packages, and custom curbs are not priced line-by-line.
Core ≈ units × unit band × roof × complexity× interior finish; × regionUse results for budgeting—confirm with licensed roofing and interior contractors.
Skylight success depends on integrated flashing with the roof system—not just the unit price
Planning a roof project? See our metal roof cost calculator and roof area calculator.
Get a custom calculator for your platformTotal illustrative estimate: $1,300
Typical scheduling window: 0.5 weeks (weather dependent)
Small bath or hallway scope
Often lower total than large fixed units
Extra cutting, handling, and flashing time
Often materially higher labor than shingles
Share it with homeowners planning roof daylighting or replacement projects
Suggested hashtags: #Skylights #Roofing #Daylighting #HomeImprovement #Calculator