LEKA Xi Modular Home Extensions
Create a warmer, more usable extension or conservatory space with a modern modular LEKA Xi base and wall system. Designed to reduce mess, speed up installation and deliver a thermally efficient living area for homes across South Wales.
A fast, clean alternative to a traditional extension base and wall build
LEKA Xi is a modular home extension and conservatory system using engineered GRP components rather than a conventional block or brick structure. It is designed to create extra living space with lower disruption, reduced mess and improved thermal performance.
- No timber, no aluminium and no corrosion risk within the structural GRP system.
- Suitable where access is limited and heavy groundworks are difficult.
- Fixed-cost design approach with no hidden extras once the specification is agreed.
- Choice of external finishes, roof styles, windows and doors to suit your home.
- Ideal for replacing tired conservatories or creating new living space.
Engineered base, wall and roof options
The LEKA Xi system is built around a structurally tested GRP base and wall system, with roof options to match your preferred style and performance requirements.
Ground connection options
Adjustable feet, concrete pads or ground screws can be considered depending on ground conditions and project requirements.
Insulated base system
Pre-manufactured GRP base sections with supporting joists and insulation help reduce heat loss through the floor.
Modular wall construction
Walls can be produced to bespoke sizes with insulation and a choice of internal and external finishes.
Roof compatibility
Suitable roof choices can include LEKA tiled, flat or orangery-style roof systems, as well as glass or polycarbonate options where specified.
Window and door options
Combine your Xi build with uPVC or aluminium glazing options to create a bright, practical living space.
Finish choices
External options can include render board, brick or stone skin style finishes, cladding or other installer-approved finishes.
Reduced excavation, faster build and a cleaner site
Traditional extensions can involve lengthy groundworks, wet trades and disruption. The LEKA Xi is typically installed on concrete pads or structural ground screws, reducing the need for heavy excavation in many projects.
- Engineered GRP base construction.
- Insulated floor build-up to support thermal performance.
- Pre-fabricated sections for faster site assembly.
- Suitable for many conservatory replacement and home extension applications.
Warm, usable living space through the year
The Xi wall system uses pre-manufactured lightweight sections with insulation built in. When combined with a suitable LEKA roof and quality glazing, it helps create a room that feels more like part of the home and less like an old-style conservatory.
- Designed to reduce thermal bridging and moisture absorption.
- Insulated wall sections with a range of finish options.
- Compatible with multiple roof designs for different property styles.
- Good option for kitchens, dining rooms, sitting rooms, playrooms and garden-facing spaces.
Send the right details and we can help price your LEKA Xi project
A few measurements and photos will help us understand the project and quote the correct system, roof and glazing options.
Project type
Tell us whether it is a new extension, conservatory replacement, old base replacement or full room upgrade.
Approximate sizes
Send width, projection, height and any rough drawings or photos of the existing area.
Roof and finish
Let us know the roof style, wall finish, colour and whether you want matching windows or doors.
Location and access
Include your town or postcode and any rear-access restrictions that could affect delivery or installation.
Modern, traditional and garden-facing designs
The Xi can be designed around your available space, with glazing, cladding, render, brick-effect finishes and roof styles to suit your property.
Built for comfort, efficiency and lower disruption
The LEKA brochure highlights efficiency gains for the roof, walls and base, including improved acoustics compared with a glass roof and cleaner construction compared with a traditional method.
- Roof system designed for energy efficiency and reduced condensation risk.
- Wall system designed to provide more internal floor space than cavity walls.
- Base system designed for cleaner construction and improved thermal efficiency.
- Building-control approved/certified details should be confirmed at quotation stage.
Speak to Building Plastics Wales about your LEKA Xi project
Building Plastics Wales supplies trade and DIY customers across South Wales, with branches in Blackwood and Newport and an online store team to help with enquiries.
Ready to plan a LEKA Xi extension?
Call the windows and doors quote line on 01495 533631 or email measurements, photos and preferred finishes to info@buildingplastics.co.uk.
Head Office: Unit 1-3, Block E, Penmaen Industrial Estate, Pontllanfraith, NP12 2DQ. Blackwood Shop 01495 221630 | Newport Shop 01633 893291 | Online Store 0333 050 0585. Product specifications, colours, performance values, planning/building-control requirements and lead times should be confirmed before ordering.