Installing a skylight can transform a dark room with natural light — and models with integrated LED lighting add a handy backup for cloudy days or night-time use. The short answer is: some of this project is DIY-friendly, but the electrical wiring is restricted work in New Zealand and must be carried out by a licensed electrician. Here's how to break it down sensibly.
Understanding the Two Trades Involved
A skylight with integrated LED lighting sits at the intersection of building work and electrical work. These are governed by different rules:
- Building work — cutting the roof opening, framing, weatherproofing, and fitting the skylight unit itself — may be DIY-able in some cases, but often requires a building consent and must comply with the NZ Building Code.
- Electrical work — connecting the LED driver, transformer, or any mains wiring — is restricted work under the Electricity Act 1992 and must be done by a registered electrician. Doing this yourself is illegal and dangerous.
What Building Work Is Involved?
Cutting a hole in your roof and installing a skylight is significant structural and weatherproofing work. Key considerations include:
- Building consent: Many skylight installations require a building consent from your local council. Some minor work may qualify as exempt under Schedule 1 of the Building Act, but this depends on your roof structure, the size of the opening, and your council's interpretation. Always check with your council before starting.
- NZ Building Code compliance: The installation must comply with relevant clauses, particularly E2 (External Moisture) — ensuring the skylight is properly flashed and waterproofed to prevent leaks. Poor flashing is one of the most common causes of water damage in NZ homes.
- Roof structure: Cutting into rafters or trusses can compromise structural integrity. Engineered roof trusses (common in NZ homes built from the 1980s onwards) must never be cut or modified without engineering sign-off.
- Licensed Building Practitioners (LBPs): If the work involves restricted building work (such as structural alterations), it must be carried out or supervised by an LBP.
If you're confident in your building skills, have a simple rafter roof (not trusses), and your council confirms no consent is needed, fitting the skylight unit itself may be within reach for a competent DIYer. However, getting a professional roofer or builder to at least flash and seal the unit is strongly recommended — a leaky skylight can cause serious and costly damage.
Why the Electrical Work Is Not DIY
This is the critical point: in New Zealand, connecting any integrated LED lighting to mains power is restricted electrical work under the Electricity Act 1992. It doesn't matter how straightforward it looks — even wiring a light fitting to an existing circuit must be done by a registered electrician.
Unlicensed electrical work:
- Is illegal and can result in significant fines
- Voids your home insurance if a fault or fire occurs
- Creates serious risk of electrocution or fire
You can check that your electrician is properly registered through the Electrical Workers Registration Board (EWRB).
Once the work is complete, your electrician must issue a Certificate of Compliance (CoC) — keep this document safe, as you'll need it if you ever sell the property.
What About Battery-Powered or Solar LED Options?
Some skylight models include self-contained solar-powered or battery-operated LED lighting that doesn't connect to your mains wiring. These units are generally not restricted electrical work, since there's no mains connection involved. However, always check the product specifications and, if in doubt, ask a licensed electrician.
Choosing the Right Skylight
NZ's variable climate — UV exposure, high rainfall in many regions, and temperature swings — means product quality matters. Look for:
- UV-stabilised glazing (polycarbonate or glass) rated for NZ conditions
- Integrated flashing kits suited to your roof pitch and cladding type
- LED drivers and transformers that are SAA or equivalent approved for use in NZ
- Compliance with BRANZ guidance on roof penetrations and weatherproofing
Leading NZ trade suppliers such as Bunnings, Mitre 10, and PlaceMakers stock a range of skylight options, though specialist roofing suppliers may offer better-quality flashing systems.
A Practical Step-by-Step Overview
| Step | Who Does It | Notes |
|---|---|---|
| Check consent requirements | You + your council | Do this first — before buying anything |
| Assess roof structure | Builder or LBP | Critical if trusses are involved |
| Cut opening & frame | Builder/roofer or skilled DIYer | Only if rafters, not trusses |
| Install & flash skylight unit | Roofer or skilled DIYer | Waterproofing is critical |
| Connect LED wiring to mains | Licensed electrician only | Restricted work — no exceptions |
| Obtain Certificate of Compliance | Your electrician issues this | Keep it on file |
When to Call a Professional
You should engage a licensed professional if:
- Your roof has engineered trusses (most homes built post-1980)
- Your council requires a building consent
- You're unsure about flashing or weatherproofing
- The skylight has any mains-connected LED lighting (always required)
- You want peace of mind that the work is code-compliant and insured
A qualified electrician and an experienced roofer or builder working together will get this done safely and correctly. You can find licensed local tradespeople on tradedirectory.co.nz.
Safety Note
Working at height on a roof carries serious injury risk. WorkSafe NZ provides guidance on safe working at height for homeowners. Always use appropriate fall protection and never work on a wet or steep roof alone.