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Conservatory Conversions in Littlehampton & West Sussex

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Conservatory Conversions in Littlehampton & West Sussex

Do you find it difficult to use your conservatory because it gets too hot in the summer and too cold in the winter? If so, then our conservatory conversions may be what you need for you and your loved ones to enjoy your conservatory again. With modern engineering features, our conservatory conversions will enhance your Littlehampton, West Sussex, or nearby property. 

The Better Way To Build

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With no new base work used for conservatory conversions, they are premanufactured off-site, making for a quicker installation process. Additionally, no cement is used, which will keep your home tidy after installation.

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Because our conservatory conversions are lighter than others, they are able to take advantage of existing conservatory bases. Having a lightweight conservatory conversion also helps keep your costs down by using materials compliant with Building Regulations.

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Energy Efficient

Conservatory conversions are five times more energy efficient than a regular home. Because of this, you can reduce your energy bills by up to £1,000 annually. Enjoy the warmth and comfort of your new conservatory conversion.

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Added Value

Conservatory conversions are perfect for adding increased space to your Littlehampton or West Sussex home due to having slimmer walls that take up less space. This results in increased resale value as well.

Conservatory Conversion Roofs

Glass Roof

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 is used to precision engineer wind and snow loads

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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 as low as 0.12 W/m²K for incredible thermal performance
  • Complete structure fully fire-tested
  • Strongest unsupported spans up to 4m

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For any shape and size, the Livinroof is the most configurable solid roof system available, with plenty of options 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 as low as 0.12 W/m²K for increased thermal insulation
  • Fire tested and rated as B-roof according to EN13501-5: 2016

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Flat Roof

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
  • U-values as low as 0.12 W/m²K

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Conservatory Conversion Prices

Get 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!

Customisation Options


Harvest Brown


Carbon Grey


Terra Brick

Get 3 FREE designs in 2 simple steps.

Find the perfect living space for your home with our user-friendly conservatory contact form. No matter what design you’re looking for, you can find the ideal designs for your home with our services.
Step 1

Select Your Favourite Designs

Select your favourite designs, send us a photo of the back of your home, and we’ll send you three personalised living spaces superimposed onto the pictures you send us.
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Step 2

Choose Contact Method

We offer a variety of ways to get in touch with us for our living space designing services. Whether you prefer to message, email or call, you can choose the right method for you below.
Chat On WhatsApp
Request Callback
Submit Enquiry
Step 3

Enter Your Details

As you’ve selected to request a call or email, we’ll need some additional information from you to start the design process.
Final Step

Thank You! We’ll Be In Touch Shortly

Thank you for submitting your request. We look forward to working on your dream living space project with you.

What Happens Next?

Picking your favourite designs is just the start of your dream living space. Now that we’ve received your contact request and favourite designs, we’ll be in touch to assist you with our superimposed images. We look forward to hearing from you!

Why Choose Us?

Since 1982, we’ve developed a knack for high-quality work, with even higher quality customer service, so you’ll never need to worry when you’re with Britannia.

See Our Before & After

Want to see how we can transform your old conservatory? View our before and after photos here!
ISO 9001
Made in Britain
National Warranties
Sabik Marine

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.

Structural Integrity

Our conservatory roofs are BBA-approved and come with a 25-year life expectancy certificate. They have been wind-tested at speeds of up to 130mph and fire-tested by Warringtonfire. Our roofs are also capable of withstanding up to 4m of unsupported bifold or sliding doors.

Internal Pelmet

Our conservatory roofs consist of a vaulted ceiling and have an internal pelmet around the perimeter. This provides a space for you to install lights or speakers in a living space that is usually difficult to light.


Exova Warringtonfire tests our conservatory roofs to ensure compliance with fire safety. Our conservatory roofs also fully comply with the latest Building Regulations and have been pre-approved by Assent and JHAI.

Energy Efficient

Our decorative super-insulated columns provide high levels of comfort and have a U-value of only 0.15 W/m²K. Our slimline ridges are 30% slimmer than traditional ridges and come with high-performance thermal breaks to prevent cold spots and condensation.

More Floor 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.

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Adaptable Designs

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 roof. You can build a new extension in a similar time to replacing your roof.

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New Building Technology

In 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.

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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.

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Fire Safety

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.

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NHBC Accepts

The Ultrapanel technology used in our conservatory conversions is used on new houses throughout Littlehampton and West Sussex. This has been recognised by NHBC, which provides guarantees on new homes.

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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.

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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.

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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.

Happy Customers

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Network Britannia Windows Limited t/a Kayvex Windows is registered in England and Wales (Register no. 07750446). Credit is subject to status and affordability. Terms and conditions apply. Authorised and regulated by the Financial Conduct Authority. Network Britannia Windows Limited FCA Register no. 738269 trading as Kayvex Windows is an appointed representative of Ffenestri Limited FCA Register no. 716352 Kimberley Road, Clevedon, Somerset, BS21 6QJ is a credit broker, not the lender. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority.