Lumi XL Slide+ 23.3m² Conservatory Extension

Manufactured from premium FSC-certified Nordic spruce and supported by substantial 120 x 120mm laminated timber posts, the Lumi XL combines Scandinavian design with impressive structural strength. The contemporary pent roof and expansive glazed elevations create a sleek architectural appearance that complements both modern and traditional properties.

At the heart of the Lumi XL are its large aluminium-framed sliding doors and matching single access door, available with a choice of 4mm toughened single glazing or the premium Slide+ 24mm double-glazed toughened glass system. The upgraded Slide+ glazing provides enhanced insulation, improved energy efficiency, and increased comfort throughout the seasons, creating a room that can be used far beyond the summer months.

With a generous 23.3m² floor area, the Lumi XL offers enough space to create a stunning garden lounge, dining room, home office, entertaining space, pool house, or even a multifunctional family room. For customers seeking true year-round usability, optional insulated floor and ceiling systems are available, allowing the building to perform more like a traditional extension while maintaining the flexibility and affordability of a modular garden structure.

Compared to a conventional extension project, the Lumi XL can often save homeowners thousands in construction costs while avoiding months of disruption, multiple contractors, and extensive groundwork. The result is a beautiful new living space that can be installed far more quickly and enjoyed sooner.

The Lumi XL can also be constructed in reverse, allowing the door position to be changed between side walls, providing greater flexibility to suit individual garden layouts and access requirements.

Key Features

• Large 23.3m² internal floor area
• Contemporary conservatory extension design
• Premium Slide+ aluminium sliding door system
• Choice of 4mm toughened single glazing or 24mm double glazing
• 120 x 120mm laminated timber posts
• FSC-certified Nordic spruce construction
• Modern pent roof design
• Reversible layout for flexible installation
• Optional insulated floor system
• Optional insulated ceiling system
• Ideal for year-round use
• Excellent alternative to traditional conservatories
• Fast installation with significantly less disruption than an extension
• 5-Year Manufacturer’s Warranty

Dimensions & Specifications

Overall Size

• External dimensions: 5.8m x 4.2m
• Internal floor area: 23.3m²
• Width: 5810mm
• Depth: 4190mm
• Contemporary pent roof design
• Reversible construction available

Construction

• FSC-certified Nordic spruce
• Laminated timber posts: 120 x 120mm
• Treated foundation joists included
• Premium engineered timber framework
• 19mm roof boards included

Doors & Glazing

• Large aluminium-framed sliding doors
• Matching aluminium access door
• Lockable door system
• 4mm Slide+ double-glazed toughened units
• Excellent natural light and garden views

Roof

• Modern pent roof design
• 19mm roof boards included
• Roof covering not included – see Optional extras
• Rainwater goods available separately

What’s Included In the Kit

• Full kit with pre-cut timber components
• Assembly kit (screws and fittings)
• Treated foundation joists
• 19mm roof boards
• Aluminium sliding doors
• Aluminium access door
• Comprehensive installation instructions

Not Included – some additional options

• Roof covering – Optional Extra
• Roof covering fixings – comes with Optional Roof Cobvering
• Rainwater gutters – Optional Extra
• Floor boards – Optional Extra
• Rear wall – No rear wall on this model as designed to be attached to an existing building

Style & Finish Options

• Natural untreated timber
• Factory preservative dipped finish
• Professionally factory painted finish

For maximum durability, untreated timber should be treated immediately after installation. Palmako’s factory-applied preservative and professional painting options provide enhanced protection while reducing future maintenance requirements.

Ideal Uses

• Conservatory Extension – Create a bright and spacious extension to your home without the complexity of traditional building works.
• Garden Lounge – A comfortable space to relax, entertain friends, or enjoy views of your garden throughout the year.
• Home Office – A productive, light-filled workspace separated from the distractions of the main home.
• Pool House – The perfect addition to a swimming pool area, providing relaxation and entertaining space.
• Outdoor Kitchen & Dining Area – Create a stunning indoor-outdoor entertaining environment for family and guests.
• Fitness & Wellness Room – Ideal for yoga, exercise, meditation, or creating a dedicated wellness retreat.

Why Choose the Lumi XL Slide+?

• The Largest Lumi Model – Offering an impressive 23.3m² of additional living space for maximum flexibility.
• Premium Slide+ Double Glazing Option – Creates a warmer, quieter, and more energy-efficient environment.
• More Affordable Than Traditional Extensions – Gain valuable living space at a fraction of the cost of many conventional extension projects.
• Year-Round Comfort – Optional insulation packages allow comfortable use throughout every season.
• Contemporary Scandinavian Design – Modern architecture combined with premium Nordic timber construction.
• Quick Installation – Less mess, less disruption, and significantly faster installation than a traditional conservatory or extension.