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Leka Xi Modular Extensions

Fast, clean, future-proof home extensions without the usual disruption.

  • Installed in Weeks, Not Months – Save time, stress, and planning headaches
  • Save Time, Stress & Mess – Avoid the delays of traditional building methods
  • No Risk of Rot or Decay – No timber. No warping. No worries.
  • Fabulous Finance Options – Spread the cost with flexible payment plans
  • Highly Energy Efficient – Warm in winter, cool in summer
  • Building Control Compliant – Approved systems, ready for inspection
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Transform Your Home in Weeks, Not Months with Leka Xi Modular Extensions!

If you’ve been put off by the time, noise and disruption of a traditional home extension, the Leka Xi system changes everything. These are precision-engineered, factory-built extensions that can be installed in weeks — not dragged out for months on end.

Say goodbye to muddy gardens, heavy machinery, or half-built shells sitting outside your home. With Leka Xi, you get a fully insulated, energy-efficient space, ready to use — faster than you might think possible.

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Why choose Leka Xi from Capital uPVC?

If you’re thinking about a modular extension, it pays to do your research. Here’s why so many people choose Capital UPVC:

  • Building Control Approved – Fully compliant and ready for approval

  • Patented, Cutting-Edge LEKA Systems – Exclusive and only installed by trained professionals

  • Factory Assembled for Precision – Every part pre-tested before delivery

  • Installed in Weeks, Not Months – Quick, clean, and expertly managed

  • No Risk of Rot, Decay or Moisture Issues – Thanks to high-tech GRP construction

  • No Heavy Excavation Needed – Minimal mess, minimal fuss

  • Tried, Tested & Proven Results – Thousands installed across the UK

  • Trusted Local Installers with Excellent Reviews – You’re in safe hands from start to finish

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A Better Way to Build

Why Homeowners Are Choosing Leka Xi Over Traditional Extensions

We speak to homeowners every week who are worried about the time, cost and disruption of building an extension the old-fashioned way. And the truth is, they’re right to be cautious.

Traditional builds take months. They involve foundations, bricklayers, messy cement work, multiple trades, unexpected delays and inevitable budget creep.

Leka Xi changes all that. It’s modular, which means it arrives ready to be assembled. It’s lightweight, which means it can often be installed without digging up your garden. And it’s fully insulated, making it ideal for year-round use.

Whether you’re dreaming of a new kitchen space, home gym, office, playroom, or just more space to breathe — this is the smarter choice. Less hassle. More speed. Greater comfort. Beautifully built.

A Stunning Orangery Recently Built In Creigiau

Check out this amazing video highlighting the game-changing benefits of the Leka Xi system, which we recently used to build a beautiful Orangery in Creigiau.

Heavy Excavations are not Required

Due to the fact that the Leka Xi Modular System requires no heavy excavation work, work can be completed faster and less mess is generated as a result. This ensures that there is minimal disruption to your property and to other works going on if you are carrying out other renovations as well as the installation of your new extension, orangery, or conservatory.

This is better for the environment too, as heavy machinery is not required to install your new extension! The precision engineering of the Leka Xi Modular System is paramount in creating a product that is highly effective whilst hugely reducing installation times and waste generated.

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No Maintenance is Required

One of the best things about a Leka Xi extension is how little you need to think about it once it’s in.

No painting, no damp patches, no warping timber or cracked render. The GRP structure is designed to stay solid and smart for decades, without the headaches.

All you’ll need to do is keep your windows clean and give the exterior a gentle wash every now and then — just like the rest of your home. That means more time enjoying your space, and less time worrying about it.

Customised to Match Your Home

Extensions shouldn’t look bolted on — they should feel like they’ve always been there.

With a huge range of brick-effect finishes and colour options available, your Leka Xi extension can be tailored to suit your home’s exact aesthetic. Whether you want a perfect match or a bold contrast, we’ll help you design something that feels right.

The roof can be tiled to match your existing property, and windows and doors can be positioned exactly where you want them. It’s a truly bespoke solution — without the bespoke price tag.

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Get a Quotation for our Leka Xi Modular Extension System Today!

If you’re looking to add space, comfort, and value to your home — without the hassle of a traditional build — Leka Xi is the solution you’ve been waiting for.

Whether it’s a new kitchen extension, home office, snug, or garden room, the installation takes weeks instead of months. It’s cleaner, quicker, and incredibly energy-efficient — keeping your home warm in winter and cool in summer.

We offer flexible finance, full project management, and no-obligation quotes.
Call our friendly team today on
029 2047 2700
or use the
enquiry form
on our website — and let’s get your new space underway.

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