White glazed extension interior

Energy-Efficient Glazed and Glass Extensions

When choosing to extend your home, the last thing you want to do is see your energy bills rise when doing so. But, fortunately, our glass and glazed extensions in Surrey possess excellent thermal properties, ensuring they’ll stay comfortable all year without causing your energy bills to suddenly shoot up.

Visit Our Conservatory Showsite

The best way to envisage how a conservatory or orangery will look on your home is to head on down to a glazed extension show centre, see one for yourself and get some expert advice when doing so. Click on the link below for details on how you can pay us a visit.

Orangery at Sherborne's Farnborough showroom
Prefix replacement tiled conservatory roof

Roof Replacements Available Too

In addition to new glazed extensions across Hampshire, we also offer a range of roof replacements. This includes tiled and glass roofs. So, if you’re current conservatory or orangery isn’t giving you as much as it once did, we can restore it to its former glory.

Designed for Hampshire Living

Embrace the Outdoors

Hampshire’s beautiful landscapes and coastal views deserve to be enjoyed year-round. Our glazed extensions feature full-height glass walls, bi-fold doors, and panoramic windows—perfect for connecting your living space to your garden or countryside surroundings. Whether you want a modern glass box extension or a classic orangery, we tailor every project to suit your property’s character and your lifestyle.

Built for Local Conditions

Living near the coast or in rural Hampshire means your extension needs to withstand the elements. We use advanced double glazing, thermally broken frames, and weather-resistant materials to ensure comfort and durability. Our energy-efficient glass keeps your extension warm in winter and cool in summer, while self-cleaning glass options reduce maintenance—ideal for busy families.

 

Large white uPVC orangery in Surrey.
Sherborne staff opening Hartley Wintney showroom

Key Benefits for Hampshire Homeowners

• Flood Your Home with Natural Light: Our high-performance glazing maximises daylight, creating bright, airy spaces even on cloudy days.

• Expand Your Living Space: From kitchen-diners to home offices and playrooms, our extensions add valuable, versatile space tailored to your needs.

• Boost Property Value: A well-designed glazed extension can add up to 15% to your home’s value—an excellent investment for Hampshire’s competitive property market.

• Year-Round Comfort: Advanced insulation and climate control systems keep your extension comfortable in all seasons, whatever Hampshire’s weather brings.

• Seamless Indoor-Outdoor Living: Enjoy uninterrupted views of your garden, the Solent, or the South Downs with floor-to-ceiling glass and wide-opening doors.

Why Choose Sherborne Windows in Hampshire?

• Over 1,200 successful installations across Hampshire and the South Coast.

• Local expertise in coastal and rural property requirements.

• Comprehensive service—from design to aftercare.

• Specialising in glazed extensions, roof replacements, and energy-efficient upgrades.

Ready to transform your Hampshire home?

Book your free design consultation today and discover how a Sherborne glazed extension can bring more light, space, and value to your property.

brick orangery
uPVC black glass roof replacement

How much does a glass extension cost?

The cost of a glass extension will depend on a few factors. The size of the area you would like the glass extension to be on, the larger the extension the more exspensive. The material you want to use for the conservatory and the style choices.

Its always best to speak to an expert to get an accurate quote and overview of all the options.

Are glass extensions cold?

No, glass extensions are not cold. Glass extension made from modern materials are very thermally efficient which means they are cheaper to heat and dont let the cold in. This means you can use your glazed extension all year round.

Do you need planning permission for glass extensions?

Normally you do not need plannig permission for glass extensions. The basic limits you can build to before needing plannig permission is that the extensions should not take up more than hald the area of land around the home. However it is always best to ask a local expert and check your planning rules in the local area just to make sure you are within the limits.

sherborne brochure

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Visit our Showroom