Lightweight, Tiled, Replacement Conservatory Roof

Leka Xi Modular Conservatory Walls & Base

Transform your conservatory into a comfortable, usable living space all year round

Thermolite Roofs offers tiled replacement solutions for conservatory roofs, providing lightweight replacement systems for conservatory roofs across the North West.

To complete the Leka suite of products, the Leka Xi can provide a warm, sustainable alternative to a traditional block/brick built conservatory base/wall

Thermolite Roofs offers tiled replacement solutions for conservatory roofs, providing lightweight replacement systems for conservatory roofs across the North West.

Modular Conservatory – Save Time and Reduce Mess

Typically installed on concrete pads, the Leka Xi saves time, reduces mess, and alleviates stress when planning a new conservatory or single-storey extension.

The GRP cladding skins are available in various colors, providing a sustainable alternative to real brickwork, stone, or timber. Additionally, we offer external boarding that is ready for a plasterer to render directly onto.

Leka Xi: Complete Efficiency

Typically, a conservatory with the Leka Xi base and wall system, along with a Leka roof, can be installed in days rather than weeks. Our GRP lightweight, structurally sound framework ensures no thermal bridging or moisture absorption. It meets building regulation standards for thermal efficiency.

The Xi features highly engineered, prefabricated modular sections, ensuring that every component has been factory-tested before delivery. This revolutionary system transforms the building market, offering homeowners numerous benefits.

Advantages of Leka Xi

  • Dwarf Walls, Full Walls, or a Combination
  • Installed in Days, Not Weeks
  • Minimal Excavation Work, Resulting in Less Mess
  • Outstanding Thermal Efficiency
  • Compliant with Building Regulations
  • Perfect for Homes with Limited or No Rear Access
  • Cost-Effective
  • Precision-Engineered, Prefabricated Modular Sections
  • Maintenance-Free with Authentic GRP Brick Cladding in Various Colors
  • Realistic GRP Timber Cladding Options Available
  • Onsite Rendering Capability for Maximum Flexibility

Let’s begin

Contact us today for a free quote on a Leka Xi Modular Wall & Base installation in your area!

Leka Xi Modular Wall & Base Overview

Below is a detailed breakdown of the Leka Xi Modular Wall & Base system, which offers lighter and superior conservatory base insulation. The Xi system provides numerous benefits for your freestanding garden building or home extension

Step 1 – Adjustable Feet

Depending on the ground conditions at the installation site, the supporting feet for the Leka Xi can typically be installed on basic concrete pads, reducing the need for extensive groundwork.

The adjustable capability of the Xi feet accommodates varied floor levels, ensuring a precise and level finish upon completion.

Step 1b – Ground Screws


Ground screws provide an excellent alternative to concrete pads for Leka Xi foundations.

These innovative, structurally tested products are suitable for various ground conditions and are typically installed in under a day. Installation companies also offer ground surveys, saving you hassle and time.

Step 2 – Base System Installation

After laying a sufficient membrane over the ground area, the pre-manufactured Leka Xi GRP base system is installed. This includes a floor perimeter beam and structurally advanced supporting joists, thermally enhanced with PIR insulation sheets placed between them..

Step 3 – Modular Wall System


The Xi wall system is highly modular, allowing each wall to be custom-made to your desired heights and widths. These walls are pre-manufactured into lightweight sections for easy installation.

Step 4 – Roof Installation

Once the modular Xi framework is installed, the appropriate roof system is added. Various roof options can complement your Leka Xi installation, including:

  • Leka Flat Roof
  • Leka Orangery Roof
  • Leka Tiled Roof

Step 5 – Insulation

High-grade EPS insulation is pre-cut to size and neatly installed between the thermally efficient GRP framework.

Step 6 – Plastering and Flooring

After installing windows and doors, internal energy-efficient plasterboards are added, along with high-grade Weightrock flooring. This provides a surface ready for plastering and the application of your preferred floor covering.

Step 7 – External Finish

Finally, the desired external finish is applied. The Leka Xi offers a range of options:

  • Maintenance-free GRP brick, timber, or stone skin finishes, all quick to install
  • The unique external Leka board that allows for a wet render coat to be applied directly by a plasterer
  • Custom finishes upon request

Fast Installation

In most cases, the Leka Xi system, including any roof, can be installed and completed in less than a week, eliminating the need for heavy groundworks, reducing mess, and shortening build time.



Homeowners are realising that they can get a great deal more from their conservatory if they convert to a new lightweight tiled roof. Our ethos is to provide high-quality conservatory conversions at competitive prices coupled with the kind of service only a local company can provide.

Take a look at our ‘BEFORE‘ & ‘AFTER’ images by clicking below.

  • Building regulation compliant conservatory roofs

  • Free visit to discuss requirements

  • Free technical advice.

  • No Obligation Quotations Supplied

  • No salesmen.

  • Time served tradesmen.

  • All work to British Standard.

  • 10-year guarantees.

  • Completed within 3 days.

  • Watertight within a day.

Our Customers Recommend Us

Our Customers Recommend Us

We have been planning, designing and building conservatories for over 30 years