By Skylight Experts
Make informed decisions before cutting into your roof
Installing a skylight changes your roof structure, affects your home’s energy performance and can increase resale value. Asking the right questions helps you avoid expensive mistakes and ensures a successful project.
1. Which type of skylight suits my roof?
Skylights come in fixed, vented and tubular designs. Your roof’s slope and construction determine which options are realistic. Fixed skylights provide daylight without ventilation and suit living rooms or hallways, while vented skylights open for airflow — ideal for kitchens, bathrooms or laundry rooms. Tubular skylights are compact, making them perfect for tight or windowless areas.
2. How will you prevent leaks?
Leaks usually result from poor flashing or installation. Ask your installer whether they will use curb‑mounted or deck‑mounted skylights and which flashing kits are appropriate for your roof material. Professional flashing and weatherproofing prevent water ingress and protect your interior.
3. What about energy efficiency?
A skylight’s U‑factor indicates its insulation, while the Solar Heat Gain Coefficient (SHGC) shows how much solar heat it transmits. Positioning matters too: north‑facing skylights provide steady light with minimal heat, whereas south‑ or west‑facing skylights admit more warmth. Ask about low‑E coatings, argon‑filled glazing and blinds to optimise comfort and reduce utility bills.
4. Do I need a permit or structural assessment?
Cutting a hole in your roof is a major alteration. Many councils require building consent, and your roof structure may need reinforcing. Ensure your installer understands local codes and will arrange inspections.
5. What are the warranties and ongoing costs?
Quality skylights last 15–20 years. Ask about manufacturer and installer warranties, what they cover and how long they last. Discuss hidden costs such as interior finishing, blinds, motorisation and future maintenance.
FAQs
Q: What size should my skylight be?
A: A general guideline is that the glazing area should not exceed 5 % of a room’s floor area in rooms with many windows or 15 % in darker spaces. Your installer can refine this based on roof structure and daylight needs.
Q: How do I prepare my home for installation?
A: Well‑installed skylights that enhance daylight and energy efficiency can add value, but outdated or leaky units can be a liability.
Q: How do I prepare my home for installation?
A: Well‑installed skylights that enhance daylight and energy efficiency can add value, but outdated or leaky units can be a liability.
Q: How do I prepare my home for installation?
A: Well‑installed skylights that enhance daylight and energy efficiency can add value, but outdated or leaky units can be a liability.
