What Is UV Light and Why Does It Matter for Your Home?
The impact of UV rays on furnishings and interiors
UV rays are part of the sunlight spectrum, invisible to the human eye but powerful enough to break down pigments and fibres over time. Fabrics, carpets, artworks, timber flooring, and even plastics can all fade or discolour after prolonged exposure. This type of damage is irreversible - meaning once the colour is gone, you can’t bring it back.
Health risks associated with prolonged UV exposure indoors
It’s not just your home’s interiors at risk. Although being indoors provides some protection, certain UV rays can still penetrate glass and reach your skin. Over time, this can contribute to premature ageing and increase the risk of skin damage. Many homeowners are surprised to learn that standard single-glazed windows offer little defence against these harmful rays.
Can UV Light Pass Through Double Glazing?
How different types of glass affect UV transmission
A common assumption is that all double glazing blocks UV completely. While double glazing does help reduce UV transmission compared to single glazing, the level of protection varies widely depending on the type of glass and coatings used. Low-E coated glass, for example, can block more UV than plain float glass, but not all double glazing is created equal.
Why standard double glazing may not be enough
So, does standard double glazing block UV light completely? The short answer is no. In many cases, a percentage of UV rays still gets through, which means furnishings can still fade and occupants may still be exposed to harmful rays over time. If UV protection is your main concern, it’s important to choose a system designed specifically to address it.
How Magnetite's secondary glazing compares
This is where Magnetite’s retrofit double glazing stands out. Unlike standard glass systems, Magnetite uses optical-grade acrylic panels that block up to 99% of UV rays. That’s significantly higher than what standard double glazing typically offers, making it an ideal choice for protecting both your health and your home’s interiors. The acrylic panels are installed inside your existing window frames - no need for costly or invasive replacements.
You can see more about how our system works here: How It Works.
Protecting Your Home from UV with Magnetite
How Magnetite’s optical-grade acrylic blocks UV
The key to Magnetite’s superior UV protection lies in the acrylic panels. This material naturally filters UV light while still allowing natural daylight to flood into your home. You get the bright, open feeling you love without the slow, damaging effects of UV rays. For heritage and character homes where keeping original frames is important, this is a game-changer.
Other Ways to Reduce UV Exposure in Your Home
Window films vs double glazing
Some homeowners consider UV-blocking window films as a cheaper alternative. While films can be effective initially, they can degrade over time, leading to reduced performance and a need for replacement. Films also don’t address insulation or noise reduction, which are added benefits of a well-designed double glazing system.
Curtains and UV-blocking blinds
Curtains and blinds can help shield furnishings from direct sunlight, but UV rays can still filter through fabrics and around edges. Plus, closing curtains during the day often means living in a darker space - not ideal if you value natural light. A permanent, transparent barrier like Magnetite’s retrofit double glazing is a more practical, year-round solution.
Is Retrofitting Double Glazing Worth It for UV Protection?
Weighing cost against long-term damage
Some homeowners wonder if the investment is worth it purely for UV protection. The reality is that over years, UV damage can mean replacing expensive furniture, artworks, and flooring. When you compare these replacement costs with the one-off expense of installing retrofit double glazing, the value becomes clear. Plus, you gain the added benefits of better insulation, reduced condensation, and improved soundproofing.
If you’re weighing the options, you might find this related read helpful: The Real Cost of Single Glazing in New Zealand Homes.
Ready to Upgrade? Here’s How to Get Started
Simple retrofit process with no structural changes
Magnetite’s system can be fitted to almost any existing window, including those in older or heritage-style homes. The process is straightforward: a local team measures your windows, fabricates custom panels, and installs them with minimal disruption. There’s no need to rip out your existing frames, which means you can keep the character of your home while boosting protection.
Expert advice from your local team
Still wondering if Magnetite is right for you? Our experienced consultants can assess your specific needs, explain how UV protection works in their system, and provide a tailored quote. Whether you’re concerned about furniture fading, skin health, or both, we’ll help you choose the best solution.
Protect your home from UV damage the smart way. Book a free assessment with Magnetite today and discover how easy it is to upgrade your windows - no replacement needed.
