Made to Measure Lean-to Conservatories
Get Your DesignsHigh quality and with a sleek, elegant design, our lean-to conservatories are the perfect option for those who have height restrictions around their home. These extension spaces allow you to enlarge the profile of your home and make the most of all available space. You’ll have an additional versatile area that you can use for virtually any purpose.
Ideal for those who live in bungalows or who have a space which doesn’t quite accommodate the size of a conservatory, lean-to conservatories are a great way to add some extra living space. This is because the pitch of the roof can vary in size. A shallow pitch works well with bungalows, whereas a steep pitch is great for a terraced house.
Customisation Options

Harvest Brown

Carbon Grey

Terra Brick
Get 3 FREE designs in 2 simple steps.
Available Online, In-Store or At Home
Experience the freedom of obtaining the products you desire, tailored to your preferences. Our dedicated team is always available to assist you whenever you require assistance. Your satisfaction is our priority.

Online
Request a quote, use our digital designer or schedule a free one-to-one session with a design expert
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In Store
Visit your local showroom to explore our stunning product range and see for yourself.
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At Home
Have our friendly design expert over to discuss your project, advise and take measurements for an on-the-spot quote.
Book a home visitAdd Natural Light to Your Home
Conservatories add light and space to a home, offering a bright space which is perfect for entertaining guests, especially in the summertime. Our lean-to conservatories take on the purist; less is more approach perfect for those who want something simple to let the light in. With this induction of natural light into the home, you could make your living space seem even larger than it really is.
They’re also an incredibly versatile space for you to use. Providing more space for your property, you’ll be able to use your lean-to conservatory for practically any purpose. Whether you’re looking for a new home office, home gym or even a dining room, you’ll have the area that you need.
Thermally Efficient Lean-to Conservatories
Now more than ever, thermal efficiency is a major consideration for homeowners looking to improve and extend their homes. With prices rising all the time, it’s one of the most important things to look out for when considering a new space. If you have an existing conservatory that isn’t energy efficient, it could be causing a strain on your home’s finances.
Our Ultraframe supplied lean-to conservatories are built to offer building regulation compliant thermal efficiency. Made from uPVC materials and using the latest double glazing, they trap heat within the space to ensure a cosy environment. The result? A space that you can use all year round no matter the temperature or weather outside.
Frequently Asked Questions
Why choose a lean-to conservatory?
A lean-to conservatory is a great option for properties that have restricted outdoor space, as they can extend just a small amount away from your home while still bringing in all that natural light and warmth.
What is a lean-to conservatory?
A lean-to conservatory is one of the simplest conservatory designs we offer. Often called sunrooms, this type of conservatory consists of three glass walls coming out from one of the main walls of your property and are often smaller than a traditional conservatory.
Do you have a showroom?
Come and visit us at any of our showrooms in Bristol, Clevedon and across the South East and South West.
What Our Customers Say
Meg Welch
Great job of our new front door. They couldn’t have been more helpful and even fitted earlier than originally planned. Also gave great aftercare advice and at a very reasonable price! Would 100% recommend.
Annette Clemons
Cannot recommend Britannia Windows enough! Joe & Keith, the installers were great – explained what was to be done, showed me everything I needed to know upon completion, very considerate & tidied up really nicely. Very friendly guys who are an asset to the team!!
I LOVE my new windows & door. Such an improvement.
Rachel Godfrey
We have been extremely pleased with Britannia’s service. From the initial quote through to installation they were great and really easy to communicate with. We had our conservatory roof replaced and they were by far the least pushy and most competitive in terms of pricing.
We can definitely recommend their services and will likely be returning again soon for a new front door!
Peter Burgess
Fantastic job from initial phone call through to final tidy-up.
Britannia provided great advice before purchasing my new windows and fitted them to a high standard being punctual and polite throughout.
No request was a problem and I will definitely be using them again and would recommend to friends and family.
Jerry G
Wow a fantastic job by both sales team and fitting team.
Sam provided excellent service and answered any questions that we had. Luke, Dave, Keith and Joe did a fab job at fitting the windows and doors. Never having had anything like this done before I was a little nervous but the guys were clean and tidy and the outcome is amazing.
Would highly recommend.






