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.
Why choose atlas?
built for quality
We manufacture to the highest standards using premium materials.
made to perform
Products are secure, thermally efficient, and meet building regulations.
approved installers
Approved partner installers ensure every product is fitted perfectly.
nationwide coverage
We operate across the UK, 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.
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.
Our simple process
Browse our windows,
doors and glazed roof
systems.
Get in touch to
tell us what you’re
interested in.
We’ll match you
with an approved
installer.
Confirm your choice
and look forward to
installation.
Aluminium lean-to conservatories and extensions
Our lean-to conservatories and extensions are designed to maximise light, space and flexibility. Ideal for modern extensions, they combine slim aluminium profiles with advanced glazing to create bright, comfortable living areas that perform reliably in all seasons.
Durable
Built to perform for decades to come.
Energy efficient
Lower U values with reflective glass.
Security 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.
Multiple colours
Select from a vast palette of single and dual colours.
Bespoke sizes
Available in a range of sizes to suit any home.
Glazing options
Choose from a selection of high-performance glazing options.
Lean To Extensions
Designed to suit a wide range of properties, our systems are available in standard, low-pitch and high-pitch configurations, allowing you to accommodate planning constraints, roof heights and design preferences.
Standard Lean-To
Low Pitch Lean-To
High-Pitch Lean-to
Stock colour options
Choose from five stock colours – white, anthracite grey, anthracite grey on white, black and black on white.
White
Grey
Grey on White
Black
Black on White
Special colour options
Alternatively, select from hundreds of RAL colour options for a custom finish.
RAL Colour Range
250+ more
Lean To Extensions
Designed and manufactured in the UK, Atlas aluminium lean-to extensions combine precision engineering with dependable performance. Our Made in Britain–accredited systems use slim yet strong aluminium profiles and advanced glazing to deliver bright, durable extensions that are built to suit modern living and UK conditions.
Glass Types
For Atlas lean-to extensions, our solar control and self-cleaning glass options help manage heat, reduce glare and keep your roof looking its best with minimal maintenance.
Solar Control Glass
Uses special coatings or tints to reflect and filter the sun’s heat (infrared radiation) while letting in natural daylight, keeping buildings cooler in summer, reducing glare, cutting air conditioning costs.
Self-Cleaning Glass
Has a special transparent coating (usually titanium dioxide) that uses UV light from the sun to break down organic dirt and grime, and then uses rain (or water) to wash it away, leaving fewer streaks due to its hydrophilic (water-spreading) properties.
Key Specifications
Built for lean-to extensions, Atlas Aluminium’s roof systems combine high thermal performance with durable, low-maintenance materials for year-round reliability.
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
Take a look for yourself
Our designs are tailored to your home, delivering modern style, thermal efficiency and dependable weather protection in one seamless solution.
Frequently Asked Questions
Detailed answers to frequently asked questions covering lean-to conservatory construction, planning considerations and structural requirements.
Discover other products at Atlas
What sets Atlas apart
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.
