Dunster House Leviathan Garden Bar Gazebo | L-Shape Bar & Back Wall | W6m x D3m | Fully Installed Nationwide

If the standard Leviathan Garden Bar is impressive, the L-Shape Bar version is extraordinary. This is the Dunster House Leviathan at its most complete — a 6m x 3m outdoor bar gazebo with a full back wall for shelter and styling, and a full-length L-shaped bar running along the front and one side of the structure. The result is a bar that wraps around your guests, creates a natural serving zone on two sides, and turns your garden into the kind of space people talk about long after the evening is over.

Supplied by Dunster House and fully installed by our in-house team at Bespoke Oak and Slate across the whole of Mainland UK, this is a complete, ready-to-use outdoor bar from the moment our team hands it over. Foundations, felt roof, Smart Seal timber treatment, all fixings — everything included, everything handled by our own experienced installers.

The L-Shape Bar — A Fundamentally Different Entertaining Experience

A straight bar serves guests from one side. An L-shaped bar changes the entire dynamic of the space. Running along the full front of the structure and wrapping around one side, the L-shape bar creates two distinct serving positions, allows the bar to become the social centrepiece of the garden rather than just a backdrop, and gives you the kind of layout you find in a proper pub or commercial bar — in your own garden.

Whether you are serving drinks to a crowd at a party, hosting a relaxed summer evening with friends, or running a commercial outdoor bar for an event, the L-shape configuration gives you the flexibility and the surface area to do it properly. Combined with the full back wall — which provides a solid surface for shelving, bottle displays, mirrors, and a mounted screen — this is the most fully featured version of the Leviathan range.

Built to the Highest Standard in the Range

The L-Shape Leviathan is built from pressure treated spruce with 120mm x 120mm uprights — among the chunkiest posts in the Dunster House range — and a 19mm tongue and groove roof deck that provides a solid, weathertight base for the felt roof included as standard. At 3.04m overall height with 2.12m of internal eaves clearance, there is genuine headroom throughout the full 6m width of the structure.

Every piece of timber is pressure treated at the factory — not dip treated, but properly pressure treated through to the core — and backed by a 10-year guarantee against rot and insect infestation. Once our team completes the installation, all exposed timber is finished with Smart Seal, a premium sealant that locks in the treatment, repels moisture, and keeps the structure looking exceptional year after year with minimal upkeep.

Installed by Our Own Team, Nationwide

Every installation we carry out is done by our own experienced in-house team — no subcontractors, no agency labour, no passing your job to whoever happens to be available. We handle the full scope: foundation preparation, full structure erection including the back wall and L-shape bar, felt roof installation, Smart Seal timber treatment, and a clean, tidy finish. Your Leviathan is ready to use from day one.

We install across the whole of Mainland UK — from the south coast to the Scottish Highlands. Wherever your garden is, our team will be there.

What’s Included as Standard

• Nationwide installation — we install across the whole of Mainland UK using our own in-house teams
• Full professional installation — our team handles everything from groundworks to handover
• Full back wall — complete rear wall included as standard, professionally installed
• L-shaped bar — full-length bar running along the front and one side at 1.14m serving height, included as standard
• Foundation preparation — included as standard, no separate quote required
• All fixings supplied — every bolt, bracket, and fixing needed for a complete, secure installation
• Felt roof supplied and installed — a fully weathertight felt roof covering included in the price and professionally fitted
• Smart Seal timber treatment — all timber sealed with Smart Seal as standard for lasting protection and a premium finish
• Pressure treated timber throughout — factory treated with a 10-year guarantee against rot and insect infestation

Optional Upgrades

• Britmet Composite Slate Roof Upgrade — £1,500 — replace the standard felt roof with a premium Britmet composite slate finish. Based on the overall roof area of 6.06m x 3.22m (19.51m²), this upgrade includes supply, full installation, and all associated flashings — a finish virtually indistinguishable from natural slate, engineered to last a lifetime with zero maintenance.
• Timber Decking — £2,000 — complete the space with a professionally installed pressure treated timber deck beneath your bar gazebo. Based on the full footprint of 6.04m x 3.04m (18.36m²), sealed with Smart Seal as standard. The perfect foundation for bar stools, outdoor furniture, and a polished entertaining space.
• Composite Decking Upgrade — upgrade to a premium low-maintenance composite deck that never needs oiling, staining, or treating. Contact us for a price.
• Lighting Installation — add a professionally installed outdoor lighting scheme. From bar-top downlighters to back wall feature lighting and perimeter ambience, we design and install the full package. Contact us for a price.

Technical Specifications

• Overall External Dimensions: 6.06m x 3.22m (19’ 10" x 10’ 6")
• External Width: 6.04m (19’ 9")
• External Depth: 3.04m (9’ 11")
• Internal Width: 5.57m (18’ 3")
• Internal Depth: 5.57m (18’ 3")
• Overall Height: 3.04m (9’ 11")
• Internal Eaves Height: 2.12m (6’ 11")
• Bar Height: 1.14m (3’ 8")
• Bar Configuration: L-shape — full front and one full side
• Back Wall: Full rear wall included as standard
• Uprights: 120mm x 120mm spruce
• Roof Structure: 19mm tongue and groove boards
• Roof Covering: Felt (included as standard)
• Timber: Spruce, pressure treated
• Timber Finish: Smart Seal applied to all exposed timber as standard
• Guarantee: 10 years on pressure treated timber against rot and insect infestation

Frequently Asked Questions

How does this differ from the other Leviathan models?

The Leviathan range has three configurations: the open bar (front bar only, no back wall), the back wall version (front bar plus full rear wall), and this — the L-shape version, which has a full back wall and a bar running along both the front and one full side. This is the most fully featured model in the range and the one that most closely replicates the layout of a commercial bar.

Is this a Dunster House product?

Yes — the Leviathan L-Shape Garden Bar Gazebo is a Dunster House product, supplied by Dunster House and fully installed by Bespoke Oak and Slate. You get the quality and guarantee of a Dunster House structure with the peace of mind of a complete, professional installation service.

What does full installation include?

Full installation includes foundation preparation, erection of the complete structure including the back wall and L-shape bar, felt roof supply and installation, Smart Seal timber treatment, and all fixings. We leave your garden clean and tidy with a structure that is ready to use from day one. No hidden extras, no separate groundworks quotes.

Do you install across the whole of the UK?

We install across the whole of Mainland UK — from Cornwall to Caithness. Our own in-house installation teams travel nationwide, so wherever your garden is, we can get there.

Can I upgrade the felt roof?

Yes — you can upgrade to a Britmet composite slate roof for £1,500. This includes supply, full installation, and all associated flashings — a high-quality, low-maintenance finish that looks virtually identical to natural slate and is engineered to last a lifetime.

Can I add decking and lighting?

Yes to both. We can install a pressure treated timber deck beneath the full footprint (6.04m x 3.04m / 18.36m²) for £2,000, sealed with Smart Seal. Composite decking and full lighting installations are also available — contact us for pricing on both.

Is the L-shape bar suitable for commercial use?

The Leviathan L-Shape is popular with both domestic customers and those running commercial outdoor bars for events, hospitality venues, and private hire spaces. The two-sided bar configuration, generous headroom, and robust construction make it well suited to high-use environments. Contact us to discuss your specific requirements.

All sizes quoted are nominal. This is a fully installed product — no DIY assembly required. Supplied by Dunster House, installed by Bespoke Oak and Slate across Mainland UK.