Skylight Installation Cost
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Get free quotesWhat drives the price
The single biggest cost variable is whether the installation fits within your existing roof framing or requires structural changes. A skylight sized to fit between two existing rafters, on a roof with straightforward access, is a relatively contained job. A larger skylight, one that requires cutting and reframing rafters, or one on a steep or multi-story roof, costs meaningfully more — both for the extra carpentry and for the added labor complexity and safety equipment.
Skylight cost by type
| Type | Typical installed cost |
|---|---|
| Fixed skylight (doesn't open), standard size, fits existing framing | $1,000–$2,000 |
| Vented (operable) skylight, standard size | $1,500–$3,000 |
| Skylight requiring new framed opening / rafter modification | $2,500–$4,500+ |
| Tubular skylight / light tunnel (for rooms without direct roof access) | $500–$1,500 |
| Solar-powered vented skylight with rain sensor | $2,000–$3,500+ |
Pro tip from our network contractors
If you're already planning a full roof replacement, ask about adding a skylight as part of that same project. Your roofer is already handling the tear-off, decking, and flashing work — integrating a new skylight opening at that stage is typically more efficient (and often cheaper) than a standalone skylight installation later.
Don't forget flashing and placement
A skylight is a roof penetration, and like any penetration, it lives or dies on its flashing — see parts of a roof, explained for how flashing systems work generally. A quality skylight installation uses a manufacturer-matched flashing kit designed for your specific roofing material, not a generic sealant-based approach. Placement matters too: south-facing skylights bring in the most light but also the most heat gain in summer, while north-facing units give more even, glare-free light — worth discussing with your installer based on the room and climate.
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Get free quotesFrequently asked questions
How much does a skylight cost installed?
Typically $1,000–$2,500 for a standard fixed or vented skylight fitting existing rafter framing, and $2,500–$4,500 or more if a new framed opening or rafter modification is needed.
Is it cheaper to install a skylight during a roof replacement?
Often, yes — since the roofer is already handling tear-off, decking, and flashing, adding a skylight opening at that stage is typically more efficient than a standalone installation on an existing, finished roof.
What's a tubular skylight and how much does it cost?
A tubular skylight (or light tunnel) uses a reflective tube to bring daylight into a room that doesn't have direct roof access, like an interior hallway or bathroom. It's usually the cheapest skylight option, typically $500–$1,500 installed.
Do skylights leak?
A properly installed skylight with correct, manufacturer-matched flashing shouldn't leak any more than the rest of a well-maintained roof. Most skylight leaks trace back to improper flashing or aging seals, not the skylight glazing itself.
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Most homeowners bundle exterior work while the crew and access equipment are already on site — it usually costs less than booking each job separately. Quotes are free and carry no obligation.