Which conservatory roof is best? (Glass vs tiled vs polycarbonate)
Let's compare glass, tiled, and polycarbonate conservatory roofs. What are the pros and cons of these 3 popular roofing systems?
When it comes to choosing a conservatory, most people focus on the doors, the frames, or how the room will look from the garden. But it's the roof that truly determines how the space feels to live in.
Too hot in summer. Too cold in winter. Deafening in heavy rain. Glare at certain times of day. These are some common issues that arise with conservatories – and they're almost always related to the roof. In other words, it's important!
So, what kind of roof is best? Glass, tiled or polycarbonate?
The honest answer is that each system has its place. The better answer is that it really depends on how you want to use the space. To help you make an informed decision, let's break down the pros and cons of all three.
Polycarbonate roofs
The pros
Polycarbonate was once the standard choice for conservatories across the UK.
These roofs are lightweight and easy to install. But most of all, they're cost-effective.
As it's usually the most budget-friendly option, polycarbonate is an attractive choice for homeowners who want to add space without a huge investment.
And because it's lightweight, it can often be fitted onto existing conservatory frames without major structural changes. Installation is usually quick and straightforward.
Modern polycarbonate sheets also offer improved UV protection compared to older versions.
The cons
Polycarbonate roofs aren't without their limitations.
They tend to provide less insulation than glass or tiled systems. This can lead to a space that becomes very warm in summer and noticeably cold in winter. As energy efficiency expectations have improved, this has become more of a concern for homeowners.
Noise can also be an issue. Heavy rain or hail can be loud – not always ideal if you want to use the space for work or relaxation.
Over time, polycarbonate can also discolour or lose clarity, affecting the appearance of the conservatory.
For occasional use, such as a bright garden room for the summer months, polycarbonate can still work really well. But for year-round living, many homeowners now look for something more substantial.
Glass roofs
The pros
Glass roofs are a popular modern upgrade and are often seen as the middle ground between polycarbonate and tiled systems.
Glass provides a sleek, contemporary finish. It allows plenty of natural light into the space, which is one of the key reasons people choose a conservatory in the first place.
High-performance glazing has improved significantly in recent years. Many glass conservatory roofs now include solar-control coatings and improved thermal insulation compared to older designs.
They also tend to be quieter than polycarbonate during heavy rain.
Visually, glass roofs maintain that classic conservatory feel, helping the space feel bright, airy and connected to the outdoors.
The cons
Even with modern glazing, glass roofs can still struggle with temperature extremes compared to a fully insulated tiled system.
Large expanses of glass can allow significant heat gain in summer, so blinds may be needed to reduce glare. And in the winter, heat loss can still occur through the glazed panels, even with improved insulation.
There's also the practical reality of cleaning. Glass roofs tend to show dirt a little more easily and may require extra maintenance to keep them looking their best.
While it may not be the ultimate choice for everyone, glass is still an excellent option if you want maximum light and that traditional conservatory aesthetic.
Tiled roofs (warm-roof systems)
The pros
Tiled (warm-roof) conservatory systems are designed to transform a conservatory into something much closer to a true extension.
Rather than relying on glazed panels, a tiled roof is fully insulated and finished with lightweight roofing tiles to match your home.
The biggest benefit of a tiled roof is its thermal performance. A properly designed tiled conservatory roof significantly improves insulation, helping keep the room cooler in summer and warmer in winter. This makes the space inviting all year round, not just on mild spring days.
Because the roof is insulated, noise is dramatically reduced compared to glass or polycarbonate. Heavy rain becomes a soothing background sound rather than a distraction.
A warm roof also changes how the room feels internally. With a plastered ceiling and the option for integrated lighting, the space becomes more like a natural continuation of your home rather than a separate garden structure.
Externally, tiled roofs can be colour-matched to your property, creating a cohesive, high-quality finish and a space that looks the part inside and out.
At Calder Windows, we specialise in SupaLite and Equinox tiled roofs – and we believe there are no better options on the market. Built to look great and last for decades, these thermally efficient conservatory roofs can really take things to the next level.
The cons
Tiled roofs are generally a larger investment than polycarbonate and sometimes more than glass. They are also heavier, which means structural suitability must be assessed properly.
However, modern warm roof systems are specifically engineered to be lightweight and suitable for many existing conservatories – provided they are installed by experienced professionals. (That's where we come in!)
Making the right choice for your home
The best conservatory roof isn't just about the materials – it's about what works best for your lifestyle.
If you love the bright, traditional conservatory look and want maximum natural light, a high-performance glass roof can be an excellent choice.
But if your goal is to create an energy-efficient space that feels as comfortable in January as it does in July, a tiled warm roof is often the superior solution.
At Calder Windows, we offer a range of conservatory roof options, including high-performance glass and advanced tiled warm roof systems. That means instead of compromising, you can choose the solution that truly fits your home and how you want to live in it.
If you're unsure which direction is right, why not talk to our team? We can help clarify what's structurally possible and what will deliver the comfort you're looking for.
In the end, the best conservatory roof is the one that turns your conservatory into a space you love – all year round.
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