The Better Way To Build
With no new base work used for conservatory conversions, they are pre manufactured off site which contributes to the fast paced installation. As no cement used, your home will benefit from a tidier space after installation is complete.
Our conservatory conversions are lightweight compared to others, it enables the use of existing conservatories bases. Transforming your conservatory conversion to become lighter than the old, it helps keep your costs down with Building Regulation compliant materials used.
Conservatory conversions are five times more energy efficient than a regular home. Something every homeowner wants, you can save money on your energy bills by a great deal each year, costing up to £1,000. Enjoy the warmth and comfort from your new conservatory conversion.
Conservatory conversions are perfect for adding increased space to your home, the walls are a slim build contributing to creating a larger space. It also helps to upgrade your conservatory as it adds to the saleable value of your home in Bristol, Clevedon or the wider south west.
The original and most configurable roofing system with over 1.5 million installed throughout the UK, the glass roof is a strong, high quality and reliable asset to your conservatory conversion.
- Watertight in winds up to 130mph
- Fully customisable with a choice of 4 unique Cornices and bespoke colours
- Advanced software to validate any large shape or complex designs
- NASA satellite data used to precision engineer for wind and snow loads
The Ultraroof is the lightest tiled conservatory roof available with easy installation and high quality performance.
- Weighing 38kg/m² lighter than any other solid roof
- U-Value of 0.15 or 0.12 for incredibly thermal performance
- Complete structure fully fire tested
- Strongest unsupported spans up to 4m
For any shape and any size, the livinroof is the most configurable solid roof system available with plenty of options available to suit your conservatory conversion.
- Weighing lighter than any other solid roof at 31kg/m²
- Bespoke options with highly configurable shaped glazing options for increased natural light
- U-Value of 0.15 or 0.12 for increased thermal insulation
- Fire tested and rated as B-roof according to EN13501-5: 2016.
The flat roof is the strongest and lightest flat standing roof system for your conservatory conversion, integrated with lanterns or flat skylights.
- Weighing only 51㎡
- Works with continuous window frames
- Customisable designs available in any RAL colour.
- Holds U-values as low as 0.12 W/m2K
Conservatory Conversion PricesGet Your Designs
Convert your old conservatory into a brand new conservatory conversion with hup!, the revolutionary new building system. You can benefit from increased thermal performance, bespoke designs and strong Building Regulation compliant materials.
Request a free quote today to find out more and start transforming your conservatory!
Get 3 FREE designs in 2 simple steps.
Available Online, In-Store or At Home
With Britannia, you're never far away from expert service. Whether it's online, in-store or on-site, our staff are highly trained and can deliver an exceptional level of support and advice.
Request a quote, use our digital designer or schedule a free one-to-one session with a design expert
Visit your local showroom to explore our stunning product range and see for yourself.
Have our friendly design expert over to discuss your project, advise and take measurements for an on-the-spot quote.
Decades of Experience
Britannia Windows has operated as a family run home improvements company for more than 40 years. In all that time, we have established ourselves as a source of excellence, whether you're looking for a new conservatory, orangery, window or door.
We take care of our customers along every step of the journey. Nothing is more important than installation. When fitting your orangery extension, our team will take great care to ensure a tidy, smooth and professional experience.
Made in the UK
As our name would suggest, we manufacture all of our orangeries right here in the UK. This is handled in our Clevedon based factory. From here, we can ensure that all of our house extension products meet our and your high standards.
10 Year Guarantee
We stand by the quality of our windows, doors and orangeries. So much so, in fact, that we include a ten year guarantee with every installation. This means you'll enjoy at least a decade of hassle free enjoyment from your new space.
It can be a big decision to choose a new orangery for your home. To help you make that decision, we have a range of finance options available that will allow you to spread the cost over a time that suits you. Explore our full range of options here.
Range of Accreditations
We are extremely proud of the level of service and the quality that our orangeries provide for homeowners. But you don’t have to take our word for it! We are accredited by Secured by Design and Certass, reflecting the quality of our products.
Increased Living Space
The special feature is the conservatory conversion walls are so slim, meaning you will gain 10% to 15% more floor space. This can completely transform your conservatory with lightweight materials, as they can be built onto your existing conservatory base. Create your new living space with our conservatory conversions.
Compatible with any finish, you can customise these conservatory conversions to your home. Usually, to renew your conservatory the options have been to replace the roof and upgrade the roofs. You can build a new extension in a similar time to replacing your roof.
New Building Technology
The new revolutionary building system that is hup!, the walls click together forming a strong I-Beam structure. This outstanding element is increasingly better than traditional building methods providing increasingly better strength.
Frequently Asked Questions
Do you need permission to convert a conservatory?
Planning permission isn’t needed to convert your conservatory. However, building regulations may be required. With our conservatory conversions, the designs are completely compliant with the latest building regulations. Saving the hassle and providing a smooth process from start to finish.
Which roof type is the best?
All our conservatory conversion roofs are high quality performing and create a comfortable living space. Each roof has it’s own features and values, but they are all energy efficient helping your home in Bristol, Clevedon or the south west stay warm all year round. Being customisable, they have the ability to style it to your own home and bring a new style.
How can I find out prices for your conservatory conversions?
You can request a free online quote or speak to our friendly team members by contacting us. Simply tell us your requirements and you will receive a quote.
British Board of Agrément (BBA)
The Ultrapanel technology used in our conservatory conversions has been independently and thoroughly tested, assessed, and approved by the BBA for use in UK housing products. Ultrapanel passed the BBA’s evaluation in thermal and structural performance, condensation, fire, and durability.
Applus confirmed that the fully assembled walls of our conservatory conversions comply with the Building Regulations’ fire safety standards. Independent fire tests also show that the fully assembled structure of our tiled and solid roofs comply with all the Building Regulations’ fire safety requirements.
The Ultrapanel technology used in our conservatory conversions is used on new houses throughout Bristol, Clevedon and the south west. This has been recognised by NHBC, which provides guarantees on new homes.
The Steel Construction Institute (SCI) conducted two strength tests on the walls of our conservatory conversions and compared them to traditional brick and block walls. It was found that the walls of our conservatory conversion have the same vertical loading strength as brick walls and are 70% stiffer than brick walls.
Assent is a Building Control Approved Inspector who works to industry codes of conduct and building control performance standards. The walls and roofs of our conservatory conversions fully comply with Building Regulations and have been pre-approved by Assent. This provides you with a quicker route to Building Regulation compliance.
JHAI is a government-licensed Approved Inspector that provides Building Control for all types of building projects. The walls and roofs of our conservatory conversions fully comply with Building Regulations and have also been pre-approved by JHAI for quicker compliance with Building Regulations.
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.
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.
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!
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.
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.