By Skylight Experts
Signs it’s time for replacement
Skylights generally last 15–20 years, but older units lack modern thermal performance and weatherproofing. Common signs that replacement is warranted include recurrent leaks, fogging or condensation between panes, cracked or yellowed acrylic, or outdated flashings. Energy costs may rise as seals fail, and ultraviolet (UV) degradation can damage interiors.
Modern skylights use laminated safety glass or high‑impact plastics and insulated glazing to provide better insulation and UV protection. Upgrading improves daylight quality and reduces heat loss, making your home more comfortable year‑round.
Replacing old acrylic domes
Many homes, schools and factories in New Zealand still have the original one‑piece acrylic dome skylights that were widely used in the 1960s. These units were inexpensive and offered a simple way to bring daylight into low‑pitched roofs, but they lack insulation and are prone to yellowing or cracking as they age. Unique Skylights notes that steel‑frame or double‑glazed replacement skylights are now available for these older domes and can be supplied in clear or opaque finishes, with trafficable or security glazing if required. Our custom fitting team can replace outdated acrylic domes with modern, energy‑efficient units sized to fit the existing opening. This upgrade retains the simplicity of a dome while providing better weatherproofing, security and thermal performance.
Benefits of upgrading
Replacing an ageing skylight eliminates leaks, improves thermal efficiency and enhances aesthetics. High‑performance units feature thermally broken frames and argon‑filled glazing, achieving low U‑values that minimise heat loss. Opening models allow passive ventilation; in winter, they capture solar gain, while in summer, rising hot air escapes through the roof. New skylights can increase property value by transforming dark rooms into bright, inviting spaces.
FAQs
Q: Should I repair or replace a leaking skylight?
A: If leaks are due to flashing failure, repairs might suffice. However, cracks in glazing or worn seals often mean replacement is the more cost‑effective solution.
Q: Can I reuse the existing opening?
A: Yes. Most replacements fit into the existing roof aperture, minimising disruption.
Q: Do modern skylights block UV rays?
A: Many high‑quality products block 99 % of harmful UV radiation while still allowing beneficial daylight.
