If your skylight dome has yellowed or cracked, replacing it is often more affordable than installing a new skylight. This guide explains what factors affect cost so you can plan with confidence.
Typical Price Ranges
For standard residential domes:
- Small sizes (e.g., 400 × 700): $150–$250
- Medium sizes (e.g., 800 × 1100): $220–$350
- Large sizes (e.g., 1500 × 1500): $400–$700
Note: Prices are indicative only and exclude installation.
What Influences Cost?
Size
Larger domes require more material and cost more.
Materials
Acrylic is generally more affordable. Polycarbonate typically adds 15–30% due to higher durability.
Finish
Opal can cost slightly more for thicker diffused material.
Custom Sizing
Non-standard sizes often require special fabrication.
Installation
DIY installation may save on labour costs. Professional installation can range from $200–$500, depending on access and complexity.
Example Cost Scenarios
Illustrative Example Only:
- Scenario 1: A homeowner replaces a 550 × 800 acrylic dome themselves for $220.
- Scenario 2: A large 1500 × 1500 polycarbonate dome installed professionally costs $1,100 (materials + labour).
- Scenario 3: A 800 × 1400 clear dome with DIY installation costs $450.
Is It Worth Replacing Just the Dome?
In many cases, yes:
- Replacing only the dome can save 30–60% over a full skylight replacement.
- Most curb-mounted frames can be reused.
- You avoid re-roofing or major structural work.
Tip:
Measure accurately to avoid additional costs from ordering the wrong size.
Need a Quote?
We can provide a tailored estimate based on your project.