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Skylight Cost Calculator for Quick & Accurate Estimates

Skylights are a beautiful and functional upgrade that bring natural light and ventilation into your home. But before cutting into your roof, it’s important to understand the installation costs. Our Skylight Installation Cost Calculator helps you get a fast, tailored estimate based on your skylight type, roof structure, glazing options, and regional labor rates.< Whether you’re installing a new fixed skylight or upgrading to a solar vented system, this calculator guides your planning from start to finish.
Get a Free Skylight Installation Cost Estimate

Skylight Installation Cost Calculator

Installed cost per unit (approximate).
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Disclaimer: This tool provides an estimate only. Actual cost depends on site conditions, professional quote required.

How to Calculate Skylight Installation Cost Step-by-Step Process

Step 1: Enter Your Location

Type your city, state, or country. The calculator will apply a cost-of-living multiplier for accurate labor and material pricing.

Step 2: Choose Skylight Type

Select fixed, vented, solar-powered, or tubular skylight. Each type comes with different costs and installation requirements.

Step 3: Input Skylight Size

Measure the desired skylight opening or pick from standard sizes (e.g., 21×45, 30×60). This affects both skylight price and install time.

Step 4: Pick Roof Type

Choose your roof type: flat, low-slope, steep-slope, or tile/slate. This modifies the installation complexity and labor cost.

Step 5: Select Glazing Option

Choose between clear, low-E, tinted, or impact-resistant glass. Better glazing options increase material costs but offer more energy efficiency.

Step 6: Choose Retrofit or New Install

If you’re replacing an old skylight, select “retrofit.” New installations involve cutting and framing, adding time and cost.

Step 7: Add Interior & Flashing Options

Select if you want a factory trim kit, custom drywall box-out, and whether a premium flashing kit is included in the estimate.

Step 8: View Your Estimate & Export to PDF

Click “Calculate” to receive a complete cost breakdown, including hardware, labor, finish materials, and location modifier. Use “Export to PDF” to share or save the quote.

Main Cost Factors in Skylight Installation

Skylight Type

Choose between:
  • Fixed Skylight (non-opening)
  • Vented Skylight (manual or electric)
  • Solar-Powered Skylight
  • Tubular Skylight (for small or interior rooms)
Each option varies in cost, complexity, and functionality.

Roof Type & Slope

Flat, pitched, or complex rooflines influence labor intensity and waterproofing details. Steep or tile roofs add to installation cost.Select from asphalt shingles, metal, tile, or slate. Each has its own price point, longevity, and labor demand.

Skylight Size (in inches)

Input the approximate dimensions (e.g., 21×45 in). Larger skylights mean more framing, cutting, and finishing labor.

Glazing & Energy Performance Options

Double-pane, low-E coatings, impact-rated glass, or tinted options influence material cost. Select your preference to adjust pricing.

Installation Method: Retrofit vs New Cut-In

Is the skylight replacing an old unit or is it a new install? New cut-ins involve more labor, framing, and roofing work.

Interior Finish & Drywall Work

You can include trim kits or custom drywall finishing around the skylight tunnel, which adds to interior labor cost.

Flashing Kit & Waterproofing Details

Our calculator includes recommended flashing kits and waterproofing systems. These are essential to prevent leaks.

Region Modifier

Input your location to apply a labor/material modifier specific to your area’s roofing and glazing market.

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