Lean To Roof Extensions
Aluminium lean-to roof extensions
Get more from your home with a lean-to roof extension from Atlas. As part of our modern glass roof systems range, lean-tos can add up to 4m of extra space to your home, ideal for flooding communal areas with light. When you partner with Atlas, you have free rein to customise the size, colour and fit of your installation – without compromising on energy efficiency. Get in touch to start your design or sign up as an installer today.
BUILT FOR QUALITY
Manufactured to the highest standards using premium materials for lasting quality and reliability.
MADE TO PERFORM
Every product is secure, meets building regulations and achieves market-leading thermal efficiency.
APPROVED INSTALLERS
Our network of expert installers ensure every Atlas product is fitted perfectly for lasting performance.
NATIONWIDE COVERAGE
Operating across the UK, Atlas is a trusted partner for projects of every scale, supporting homes nationwide.
Lean-to roofs
With a single sloped glass roof, lean-to extensions blend seamlessly with any property, perfectly complementing aluminium bifold doors. Open up a kitchen space or create an effortless transition between the home and garden. Each design is thermally efficient, allowing for comfortable temperatures year round, with both transparent and blue tinges available.
Our simple process
Browse Atlas Aluminium windows, doors and glazed roof systems
Get in touch to tell us what you’re interested in or have in mind
We’ll match you with an approved installer for pricing and advice
Confirm your choice and look forward to installation
Aluminium lean-to conservatories and extensions
Solar control glass helps to reflect over 60% of the sun’s energy, keeping interiors cool and preventing furniture from fading in the home. Each panel is made with toughened safety glass, and you can even upgrade to the self-cleaning option, made with a specialist coating. Protect your property from up to 91% of UV rays thanks to low-emission softcoats, supported by slimline, durable aluminium frames.
Long Lasting
Built to perform for decades to come
ENERGY EFFICIENT
Lower U values with reflective glass
SAFETY CERTIFIED
Toughened safety glass to BS EN 1279/12150
WEATHERPROOF
Water, wind and air tested
Lean to design options
Transform your extension with a lean-to design that combines versatility with clean, modern lines. From size and pitch to colour and glazing, every detail can be tailored to suit your style and surroundings.
Flexible Design
Variable roof pitch for easy installation
Bespoke sizes
Available in a range of sizes to suit any home
Multiple Colours
Select from a vast palette of single and dual colours
Glass Options
Choose from a selection of high-performance glazing options
Stock Colour Options
Choose from five stock colours – white, anthracite grey, anthracite grey on white, black, and black on white.
Special Colour Options
Alternatively, select from hundreds of RAL colour options for a custom finish.
Glass Options
Self Clean Solar Blue
Self Clean Solar Neutral
Key specifications
- Warm edge spacers
- Thermally broken aluminium
- BS EN 1279/12150 toughened glass
- White, Anthracite grey, black or mixed colours
- U value 0.5 w/m2K with Sunshield Blue
- Self-clean or solar control glass
- Low-E softcoats
- Argon-filled cavities
Download a brochure
Frequently asked questions
What is a lean-to conservatory?
A lean-to conservatory is used in an extension on a home, providing a single sloping glass roof with glazed panels on the side. Thanks to this simple design, they are easy to install and perfectly complement bifold doors to open up a space. This makes them ideal for both homeowners looking to extend, and installers seeking versatile, flexible styles.
Do I need planning for a lean-to conservatory?
It’s unlikely that you will need planning permission for a small lean-to conservatory. Like all developments, you should check that your plans do not contravene regulations for conservation areas or listed buildings, and it should comply with Building Regulations.
All Atlas products are compliant with the latest Building Regulations for thermal efficiency (Part L). If you are looking for something larger than 30m2, you may need permission. Our third-party trusted installers can help you with any questions you may have.
Does a lean-to conservatory add value?
A lean-to conservatory could add value to your home thanks to the additional space. All Atlas lean-to extensions offer up to 4m of extra space, maximising natural light thanks to slimmer ridges.
Typically, a conservatory can add 5-7% extra value to a home, but it must be energy-efficient. Our designs feature thermally broken technology and U values as low as 0.5 w/m2K, saving you money and making your home more attractive.
Do you need foundations for a lean-to conservatory?
You will need foundations for a lean-to roof extension, just as you would any other renovations or conservatory designs on your house. These will help to ensure your lean-to is structurally sound and complies with Building Regulations. Foundations vary in size from 1,000mm to 1,500mm.
Discover other roof products at Atlas
Why choose Atlas?
For the perfect home extension that makes the most of natural light, choose an Atlas lean-to. With our process, you can fully customise your design, from colours to glazing, security and self-cleaning glass. Blend your extension seamlessly with your home and open up a space with bifold doors.
Every product is manufactured to the highest standards of security and energy efficiency, without compromising on aesthetics. For installers, Atlas lean-to extensions are versatile and easy to fit, helping you deliver the best service possible.
If you want a long-lasting extension that’s weatherproof, secure and looks stunning, contact Atlas today.