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Garden room project · Garden Spaces

Low-maintenance garden office by Garden Spaces

A 4.2m × 4.9m Garden Spaces office with an ebony-stained Thermowood front, black cement board on the boundary sides, aluminium bi-folds and a lit canopy over a composite step.


Published 29 December 2022 · Updated 24 October 2026 · 2 minute read · Written by The Garden Room & Annexe Guide

Garden Spaces garden office with Thermowood front wall stained ebony
Garden Spaces  4.2m × 4.9m garden office

Investing in a garden office is a significant decision, so it’s essential to choose durable, low-maintenance finishes that ensure longevity. Garden Spaces, one of the UK’s most established garden room companies, offers a diverse range of robust exterior finishes. By exploring their extensive project archive, you can see the variety and quality of their finishes.

At a glance

  • Size: 4.2m wide by 4.9m deep.
  • Finishes: Thermowood in an Ebony oil-based stain on the front; cement particle board in RAL9005 Resifine on the three boundary walls.
  • Glazing: Powder-coated aluminium bi-folds, matched to the cladding and trims.
  • Inside: Plastered and decorated, with Smoked Oak laminate.
  • Company: Garden Spaces.

Part of our garden office guide →

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Cladding

Ebony Thermowood & cement particle board

In this custom garden office, Garden Spaces combines two resilient exterior cladding materials. The front elevation features Thermowood, a Scandinavian Redwood treated at high temperatures. This process transforms the wood’s structural composition, making it exceptionally durable and long-lasting.

Thermowood naturally displays a distinct grain pattern and a warm honey-brown tone that ages to a silver hue. This versatile material takes stains and paints well; here, an Ebony-coloured oil-based stain has been applied, enhancing both the protection and colour of the boards while retaining the wood’s natural grain.

The remaining three elevations, which face the garden boundaries, are clad in cement particle boards. These boards are highly durable, dimensionally stable, and resistant to rot. Garden Spaces colour-matches the cement particle boards with other external finishes, in this case applying RAL9005 Resifine-a flexible, durable finish that dries to a smooth surface.

Doors

Coordinated doors and cladding

A cohesive look is achieved by matching the bi-fold door frames with the cladding and trims. High-spec bi-fold doors with powder-coated aluminium frames were used for this office. When open, these doors create a seamless connection between indoor and outdoor spaces, perfect for garden offices.

The garden office features aluminium bi-fold doors on the front elevation
Aluminium bi-folds  matched to the cladding
Entrance

Composite decking and roof canopy for a welcoming entrance

The roof extends beyond the front wall to create a stylish canopy, fitted with recessed exterior-grade downlights that cast a warm glow over the building’s entrance. The canopy is complemented by a black composite decked step, offering a durable, slip-resistant alternative to traditional timber decking.

Inside

Bright, airy interior

Garden Spaces finishes their rooms to a high standard, offering various flooring options. In this case, the clients chose Smoked Oak laminate, adding a warm, inviting tone to the interior. Plastered and decorated walls and ceilings enhance the light, airy feel of the room.

The garden office has a light, airy interior
Inside  Smoked Oak laminate
Dimensions

Bespoke garden office dimensions

As custom builders, Garden Spaces can create a garden office that maximises your available space. This particular office measures 4.2m wide by 4.9m deep, making it both spacious and efficient in footprint.

Floorplan for the 4.2m x 4.9m garden office
The plan: 4.2m wide by 4.9m deep.
Planning something similar?

Learn more about Garden Spaces

To explore how you can create a low-maintenance, durable garden office with Garden Spaces, contact their team on 0845 387 9 387 or email info@gardenspaces.co.uk. Visit www.gardenspaces.co.uk to see the full range of personalisation options for your garden room.

Visit Garden Spaces More Garden Spaces projects
More projects like this Garden offices Garden rooms with a canopy 20–30sqm garden rooms
Read the guides What garden rooms cost Permitted development What is a garden room?

Published 29 December 2022 · Photographs courtesy of Garden Spaces.

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Uniquely designed
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building across England
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