Hybrid, Glass and Warm Roofs
Conservatory Roofs Winchester
For many Winchester homeowners, the conservatory is a beloved space with a major flaw: it is freezing in winter and boiling in summer. Whether you have a Victorian-style conservatory in St Cross or a modern lean-to in Weeke, the issue is almost always the roof.
At KJM Group, we specialise in transforming these underused spaces using Ultraframe’s advanced “Warm Roof” technology. By replacing your old polycarbonate or inefficient glass roof with a high-performance solid or tiled system, we can turn your conservatory into a permanent, comfortable extension of your home that blends seamlessly with your property’s heritage.
You can explore our complete range of Winchester windows, doors, and conservatories here.
Key Product Features
Winchester Roof Options: At a Glance
- Ultraframe Ultraroof: A lightweight tiled roof system that mimics traditional slate, offering U-values as low as 0.12 for maximum warmth.
- Livinroof Hybrid: The flexibility of a solid roof with shaped glazing panels inserted exactly where you need light.
- Performance Glass: Modern solar-control glass that reflects up to 86% of solar heat, far superior to older units.
- Local Heritage: We tailor designs to respect Winchester’s unique architecture, from period terraces to modern new builds.
Let the light in
Glass Conservatory Roofs
If you want to maintain the maximum amount of light but eliminate the “greenhouse effect,” a modern glass roof is the ideal solution. Unlike the polycarbonate roofs of the 1990s, which were noisy and thermally inefficient, our Ultraframe glass roofs use advanced solar-control glazing.
These high-tech units can reject up to 86% of the sun’s energy in summer while retaining heat during the winter. We offer a range of tints—from subtle blue to neutral—that reduce glare and protect your furniture from UV fading. It is the perfect way to enjoy the sky views of the Hampshire countryside without the temperature extremes.
Glass Roof page
An extension
Tiled Conservatory Roofs
The Ultraframe Ultraroof is designed to make your conservatory look and feel like a permanent extension. It is an incredibly lightweight tiled roofing system that can often be fitted onto your existing window frames, saving you the cost of a full rebuild.
Finished with authentic slate-effect tiles (available in Carbon Grey, Terra Brick, or Harvest Brown), it blends beautifully with the traditional rooftops found across Winchester. Inside, you get a stunning vaulted plastered ceiling, complete with an insulated pelmet that is perfect for housing downlights or speakers. With a U-value of just 0.15 (or even 0.12), it is warmer than many standard house roofs.
Tiled Roof page
Hybrid/Livinroof Conservatory Roofs
If you can’t decide between a solid roof and a glass roof, the Ultraframe Livinroof offers the ultimate compromise. It is constructed from insulated composite panels in a contemporary Urban Grey finish, offering the thermal performance of a solid roof.
The genius of the Livinroof is its flexibility. We can insert shaped glass panels into virtually any part of the roof structure, allowing us to direct sunlight exactly where you need it—for example, over a dining table or reading nook—while keeping the rest of the room shaded and cool. It is particularly effective for low-pitch lean-to conservatories often found on bungalows in Kings Worthy and Badger Farm.
Hybrid Livinroof pageAccurate Conservatory Roof Prices in Winchester
If your Winchester home needs a new conservatory roof, you have come to the right place. For over 40 years, KJM Group has been installing high-performance roofs across Hampshire. We believe in being transparent with our costs, which is why we offer three easy ways to get a quote:
- Online: Use our pricing engine on this page for an instant guide price in minutes.
- Email: Send us your approximate measurements and photos for a quick estimate.
- Home Visit (Recommended): For the most accurate figure, let us pop round for a quick survey.
Get it Priced Properly
A warm roof conversion is a structural project. A brief site visit allows us to check your existing frames and load-bearing support, ensuring we price the job properly from the start, with no hidden surprises later.
Our No Pressure Promise
We know inviting a company into your home can be daunting. We are different. We don’t use high-pressure sales tactics or stay in your house for hours. You will simply get honest, expert advice and a fixed written price to consider in your own time—completely hassle-free.
See why we are top-rated on Google, Which? and Checkatrade, or call us on 01264 359355 to arrange your free survey.
Common Questions About Conservatory Roofs
The cost varies significantly based on the size and style of your conservatory. As a general guide for Winchester properties:
- Polycarbonate Roof: Typically starts from around £6,500.
- High-Performance Glass Roof: Typically starts from around £8,500.
- Solid/Tiled Warm Roof (Ultraroof): A complete replacement usually starts from £15,000 depending on complexity.
While a solid roof is a larger upfront investment, it effectively turns the space into a permanent extension, adding significant value to your home.
The absolute cheapest option is a polycarbonate roof, but we generally advise against this for modern homes. It offers poor insulation, is noisy when it rains, and has a shorter lifespan.
For a balance of cost and performance, replacing old polycarbonate with modern solar-control glass is the most cost-effective upgrade. It massively improves thermal efficiency and natural light without the structural cost of a solid roof conversion.
Warning: You may see companies offering to "clad over" your existing roof internally or externally with insulation and timber. While this is the cheapest method, it is highly risky and often unsafe.
Adding weight to a structure designed only for lightweight plastic or glass can lead to collapse. Furthermore, trapping moisture between layers often causes severe condensation and rot ("interstitial condensation"). KJM Group will never install clad-over systems; we only install properly engineered replacement roofs that meet Building Regulations.
Absolutely. Most homeowners in Winchester find that replacing an old roof transforms their conservatory from a "part-time" room (too hot in summer, too cold in winter) into a "full-time" living space.
An Ultraframe warm roof offers U-values as low as 0.12, making the room as warm as the rest of your house. This usability, combined with the improved aesthetic of a tiled finish, adds genuine value and "kerb appeal" to your property.
Yes, usually. Changing a glass or polycarbonate roof to a solid tiled roof is considered a "material change" to the structure, which typically requires Planning Permission.
However, many projects may still fall under Permitted Development rights depending on the specifics of your property. You will also definitely need Building Regulations approval. KJM can manage this entire process for you, assessing your specific situation and ensuring your new roof is fully compliant and certified.
