Skylights in NJ: VELUX Cost, Leak-Proofing & Are They Worth It?
A skylight installed in New Jersey typically runs $1,000 to $4,500, depending on the type: a fixed skylight (light only) is the least expensive, a venting skylight (light plus fresh air) is mid-range, and a solar-powered venting skylight — like VELUX's — is the priciest but the most convenient. And the big question everyone asks: no, a properly installed modern skylight doesn't leak. Leaks come from bad flashing or an old, failed unit — not from the skylight itself. Here's what to know before you add one.
Green Apple Roofing installs VELUX skylights across New Jersey and has completed roughly 3,000 roofs since 2008. Because we're roofers first, we get the one thing that actually matters with a skylight right: the flashing.
Skylight cost in NJ (2026), by type
| Type | Installed cost | Best for |
|---|---|---|
| Fixed (deck-mounted) | $1,000 – $2,500 | Natural light, lowest cost |
| Manual venting | $1,500 – $3,000 | Light + fresh air, hand-operated |
| Solar-powered venting (VELUX) | $2,500 – $4,500 | Light + auto venting, rain sensor & remote |
Cost depends on the size, the type, and how easy the roof is to work on. The single biggest way to save is to add a skylight while your roof is being replaced — the crew is already up there and the flashing integrates perfectly with the new shingles.
Do skylights leak? (The honest answer)
This is the number-one worry, and it's usually based on a leaky skylight from decades ago. The truth: a modern skylight installed with proper flashing does not leak. When a skylight leaks, it's almost always one of three things — worn-out flashing on an old unit, a bargain "curb-mount" install done without a real flashing kit, or a skylight installed by someone who isn't a roofer. VELUX skylights come with an engineered flashing kit and a no-leak warranty, and installing them is a roofing job, not a window job. That's exactly why it pays to have a roofer do it.
Are skylights worth it?
- Natural light — a skylight brings daylight into rooms a wall window can't reach: hallways, bathrooms, stairwells, and north-facing spaces.
- Ventilation — a venting skylight lets hot air escape at the highest point of the room, which helps cool the house in summer.
- Resale and feel — buyers love natural light, and a well-placed skylight makes a room feel larger and brighter.
- Energy — modern skylights use insulated, low-E glass that keeps the light without the old heat-gain problem.
The best time to add one: with a new roof
If your roof is aging, adding a skylight during a roof replacement is the smart play — you save on setup, the flashing ties seamlessly into the new roof, and there's no cutting into a roof you just paid for. Not sure your roof is due yet? Here are the signs your roof needs replacing.
Why have a roofer install your skylight
A skylight is a hole in your roof — the flashing around it is the whole game. As a roofing contractor that installs VELUX skylights, we flash them the same way we flash every penetration on a roof, and we back the work. We serve homeowners across New Jersey, from Howell and Middletown to the shore, and you can see finished roofs in our project gallery. Licensed, bonded, and insured, with a veteran + first-responder discount and a price-match promise.
Thinking about adding a skylight — or worried an old one is leaking? Schedule a free inspection and we'll give you a straight recommendation and an itemized quote.
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