Glass Extensions and Wintergardens by Solarlux

Cool in the summer, warm in the winter, light all year round

Wintergarden in summer with bifold doors

Glass Extensions and Wintergardens by Solarlux

Bringing the Outside Inside

Glass Extensions and Wintergardens by Solarlux

Bringing the Outside Inside



Contemporary Conservatories, Glass Boxes and Orangeries

Fresh air in the summer, warmth in the winter, light all year round.

What is a Wintergarden?

"Wintergarden" is the German name for an insulated glass extension which
 can be used to create a stand-alone room, or to extend an existing room.

It is a contemporary aluminium or timber/aluminium system which brings light and extra space into your home. It's high thermal efficiency means you can use your living space all year round, while the use of bi-folding doors or sliding doors brings you closer to nature.

Heat Insulated

A Solarlux Wintergarden glass extension has high levels of thermal efficiency, with low U-values, which allow it to be used all year round and become part of your everyday living space, even in the coldest weather. The integrated bifolding or sliding doors allow you to open up your space in warm weather and help it to stay cool. There are also optional ventilation and shading systems including powered and climate-controlled options.

Impressive Solarlux quality — built to order in Germany

  • Glazing options with sound insulation, sun protection, burglar-resistance and self-cleaning features
  • Optional blinds or powered awning, sun & rain protection, climate controlled features.
  • A Wintergarden glass extension expansive, barrier-free access to the garden
  • Wide variety of possible designs for perfect integration into your home
  • Aluminium or timber/aluminium
  • All Solarlux products are tested and certified by various independent testing institutes
  • All Solarlux products are guaranteed "Made in Germany".


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Custom Built to Your Imagination

Wintergarden glass extensions are custom-built in Germany and can be made to a wide variety of shapes, sizes and configurations.

These are just some of the ways you can specify your wintergarden.

Customise your Wintergarden glass extension

Electric Ventilation System

Powered opening panels in the roof create ventilation at the push of a button.

AwningShade system

Even optimally heat-insulated glass extensions can become too warm in strong sunshine. High-quality shade systems for the Wintergarden provide the solution. Power-operated awnings, which catch the sun's rays before they hit the glass surfaces, provide effective exterior shade. Interior shade systems, such as roller and pleated blinds and canopies, are also available.

Wind and temperature sensors automatically control the shade system.

Wintergarden Awning animationHeating

Harsh, unpleasant weather really brings out the value of the protected comfort of your Wintergarden, and cosy hours spent overlooking the snow-covered garden are a delight. Surprisingly little heating energy is required to create comfortable temperatures, even on cold days. Fireplaces and tiled stoves, as well as underfloor heating, radiators and underfloor convection systems can easily be integrated into the glass extension.


Well-positioned light sources create a cosy ambience. Lightstrips with integrated low-voltage lights, fitted under the individual rafters, are a subtle yet effective solution. A range of spotlights, halogen lights and star spotlights, all equipped with dimmable transformers, are available.


Automatic controls offer maximum convenience: thanks to a reliable, highly sensitive automation module — not only the ventilation but also the shade and lighting can be automatically controlled.

See the Wintergarden for yourself in our Shropshire showroom


Choose your Product Version

Solarlux Wintergarden Akzent Plus

Akzent Plus

The Classic Choice

  • Structural members on outside to create almost flat internal ceiling
  • 100mm rafter width, making larger roof dimensions possible
  • Diverse design options and special roof forms possible
  • Lightstrips with recessed lights available


Solarlux Avantgarde


The Natural Choice

  • As a natural material, wood helps create a warm, relaxed, atmosphere
  • Rafter widths from 60mm (according to structural requirements)
  • Versatile design options
  • Individual lighting systems possible


Solarlux Wintergarden Nobiles


The Elegant Choice

  • Structural members on inside to create a flush external profile
  • 65mm rafter width tapered to only 36mm, notched rafter heads
  • Slim interior rafter sections create a floating construction for maximum light. Suitable for individual lighting systems
  • Expansive, barrier-free access to the garden


Akzent Vision

The Extraordinary Choice

  • Structural technical details internally serve as design highlights
  • Rafter width of only 60mm
  • Slim design with visible cable bracings and stainless steel components for maximum transparency

Project Galleries with Solarlux 'Wintergarden' Glass Extensions

We have installed dozens of Solarlux Wintergardens in recent years and these are just some of the galleries we have.

There are more on our amazing Project Galleries page along with many other products.

View All Galleries

Why Solarlux?

Solarlux is a premium German manufacturer of glazing products. They were the inventor of the modern bifolding glass door and have remained at the forefront of glazing technology ever since. 

Everything Made to Order in Germany
All Solarlux products are fully manufactured to order at their campus in Melle, Germany. Most of the range, such as bifolding or sliding doors are then shipped to the UK whole. Glass extensions are fully assembled in the factory but are then disassembled for shipping and re-assembled onsite by the installers. This means they have been completely checked by the manufacturer before shipping. 

Exceptional Performance
The phrase that comes to mind with Solarlux is "precision engineering". Everything is designed, engineered and manufactured to an obsessive standard that few can match. The entire range is tested to a high standard — the bifolding doors for example are independently tested to 1200PA (approximately 100 mph) and remain water-tight well beyond that. The SL80 has been tested to failure at 3000Pa (a typical tropical hurricane is about 2400Pa).

Thermal Insulation
All Solarlux products (including the Wintergarden) are thermally broken on the whole system, including the threshold. The class-leading U-values are provided on the whole unit, not just the door panels, so that you know exactly what you are getting. U-values range from 1.4 for the standard SL60e with double-glazing down to 0.79 for the SL79 with triple glazing (subject to specification).

As you'd expect from a German company, security is a high priority at Solarlux, and all doors & windows are tested to the rigorous European RC2 standard and beyond. The SL60 and SL80 bifold doors also have Secure by Design, a British standard created by the Association of Chief Police Officers.

Some manufacturers want to see evidence of a specific maintenance regime in order to qualify for a warranty claim. Spectrum provide a no-quibble Solarlux-backed warranty. We are also one of the elite Solarlux 'Quality Partners' which means we provide offer an enhanced warranty.

You want your Solarlux product to work just as effortlessly after 10 years (and more), not just in the first week, and Solarlux are engineered to last and last. For example, the stresses on a bifolding door are huge — and only doors made to such a high standard will last the distance. Solarlux bifolding doors are tested to 20,000 cycles — the equivalent to opening twice a day, every day for 27 years!

Passive House
The Solarlux SL97 timber-aluminium has a U-value of 0.79 (subject to specification) and meets the standard for Passive House installations.


To describe the Solarlux Campus in Melle, Germany, as outstanding would be an understatement! In recent years it has won all kinds of prizes such as the Lower Saxony State Prize for Architecture and the 2019 Environmental Award issued by the Osnabrück Regional Conservation Fund. However, even without these awards, the 58,000 m² facility would still have plenty to impress: workstations flooded with light, a huge 3,000 sq.m. showroom, one of Europe’s largest geothermal areas... the list is endless!

The Main Entrance to the Solarlux Campus in Melle- Germany


We'll do everything we can to make your project our best yet!