{"product_id":"leviathan-wooden-pergola-4m-x-3m-as-seen-on-itv-love-your-garden-120mm-posts-smart-seal-nationwide-installation-copy","title":"Leviathan Wooden Pergola 6m x 3m | 120mm Posts | Smart Seal Treated | Nationwide Installation Included","description":"\u003ch2\u003eLeviathan Wooden Pergola – 6m x 3m | 120mm Posts | Smart Seal Timber Treatment\u003c\/h2\u003e\n\u003cp\u003eSix metres. That’s not a garden feature — that’s a statement. The \u003cstrong\u003eLeviathan Wooden Pergola 6m x 3m\u003c\/strong\u003e by \u003cstrong\u003eDunster House\u003c\/strong\u003e is the most expansive freestanding pergola in the entire Leviathan range, and it transforms outdoor spaces in a way that nothing else can match. At full six metres wide and three metres deep, this structure doesn’t just enhance your garden — it becomes the defining architectural element of your entire outdoor space.\u003c\/p\u003e\n\u003cp\u003eThink of what six metres makes possible. A full-length covered veranda running along the rear of your home. A dedicated outdoor dining room at one end and a fully equipped lounge at the other, with a bar or outdoor kitchen in between. A sheltered entertaining space large enough to host a party regardless of the British weather. The 6m x 3m Leviathan is the pergola for those who entertain seriously, garden ambitiously, and refuse to compromise on scale.\u003c\/p\u003e\n\u003cp\u003eBuilt by \u003cstrong\u003eDunster House\u003c\/strong\u003e from \u003cstrong\u003eslow-grown, pressure treated spruce\u003c\/strong\u003e — not cheap pine — with every rafter pre-cut, pre-notched, and planed to precision. The \u003cstrong\u003ecommanding 120mm x 120mm upright posts\u003c\/strong\u003e provide the structural integrity to carry this span with complete confidence, while the \u003cstrong\u003eSmart Seal timber sealant finish\u003c\/strong\u003e, applied as standard, delivers a superior protective barrier against moisture, UV damage, and the relentless British weather. Backed by a \u003cstrong\u003e10-year guarantee against rot and insect infestation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e🌟 \u003cstrong\u003eProfessional nationwide installation and Smart Seal timber treatment are both included in the price, free of charge.\u003c\/strong\u003e Our experienced fitting teams cover the whole of Mainland UK — handling everything from delivery to final fitting on this substantial structure, so you can simply step outside and enjoy.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eExtraordinary 6m x 3m footprint\u003c\/strong\u003e — the largest Leviathan freestanding pergola, for those who think big\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eImposing 120mm x 120mm upright posts\u003c\/strong\u003e — the structural strength to carry a full 6m span with confidence\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSlow-grown spruce, not cheap pine\u003c\/strong\u003e — denser grain, superior long-term durability\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFully pressure treated\u003c\/strong\u003e (not dip treated) — long-term rot and insect resistance\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSmart Seal timber treatment included as standard\u003c\/strong\u003e — superior moisture and UV protection\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e10-year guarantee\u003c\/strong\u003e against rot and insect infestation\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePre-notched, pre-cut, planed rafters\u003c\/strong\u003e — precision engineered for a clean, professional finish\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eAll fixings included\u003c\/strong\u003e — no hidden extras\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIdeal as a full-length veranda\u003c\/strong\u003e — 6m of covered outdoor space along the rear of your home\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSpectacular for climbing plants\u003c\/strong\u003e — 6m of rafter span creates an unrivalled living canopy\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNationwide installation included as standard\u003c\/strong\u003e — anywhere across Mainland UK, free of charge\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApproximate Size:\u003c\/strong\u003e W6m x D3m (W19'8\" x D9'10\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpright Posts:\u003c\/strong\u003e 120mm x 120mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Slow Grown Spruce (Fully Pressure Treated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTimber Finish:\u003c\/strong\u003e Smart Seal (included as standard)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGuarantee:\u003c\/strong\u003e 10 Years against Rot and Insect Infestation\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eAll sizes quoted are nominal. All fixings supplied. Rafters are pre-cut, pre-notched, and planed.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose Bespoke Oak and Slate?\u003c\/h3\u003e\n\u003cp\u003eAt Bespoke Oak and Slate, we supply and install premium \u003cstrong\u003eDunster House\u003c\/strong\u003e garden structures across the UK. A structure of this scale demands professional installation — and that’s exactly what you get, \u003cstrong\u003eincluded as standard and free of charge\u003c\/strong\u003e, anywhere across Mainland UK. No hidden costs, no surprises — just an expertly installed, fully Smart Sealed pergola ready for you to enjoy.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eIs the 6m x 3m the largest Leviathan pergola available?\u003c\/h4\u003e\n\u003cp\u003eYes — the \u003cstrong\u003eLeviathan 6m x 3m is the largest freestanding pergola in the entire Leviathan range\u003c\/strong\u003e. At six metres wide, it offers an unmatched covered outdoor space and is the ultimate choice for serious entertainers, large gardens, and those wanting a full-length veranda-style structure.\u003c\/p\u003e\n\n\u003ch4\u003eDoes the price include installation?\u003c\/h4\u003e\n\u003cp\u003eYes — \u003cstrong\u003eprofessional nationwide installation is included in the price, free of charge\u003c\/strong\u003e. Given the scale of this structure, professional installation is essential — and our experienced fitting teams handle everything from delivery to final fitting, anywhere across Mainland UK.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is Smart Seal and is it included?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSmart Seal is a premium timber sealant\u003c\/strong\u003e that provides a superior protective barrier against moisture penetration, UV damage, and weathering — going beyond standard pressure treatment to keep your pergola performing at its best for longer. \u003cstrong\u003eSmart Seal is applied as standard with every order\u003c\/strong\u003e, free of charge, by our installation team as part of the fitting process.\u003c\/p\u003e\n\n\u003ch4\u003eDo you install anywhere in the UK?\u003c\/h4\u003e\n\u003cp\u003eYes. We install \u003cstrong\u003eanywhere across Mainland UK\u003c\/strong\u003e at no extra cost. Whether you’re in the South West, the Midlands, Scotland, or anywhere in between — our teams will come to you, regardless of the size of the structure.\u003c\/p\u003e\n\n\u003ch4\u003eCan the 6m x 3m be used as a veranda along the back of a house?\u003c\/h4\u003e\n\u003cp\u003eYes — the \u003cstrong\u003e6m width\u003c\/strong\u003e makes this pergola exceptionally well-suited for use as a \u003cstrong\u003efull-length veranda or covered walkway along the rear elevation of a property\u003c\/strong\u003e. It provides continuous covered outdoor space across the full width of many UK homes, creating a seamless transition between indoors and outdoors.\u003c\/p\u003e\n\n\u003ch4\u003eWhy choose the 6m x 3m over the 5m x 3m?\u003c\/h4\u003e\n\u003cp\u003eIf you have the garden space, the extra metre makes a meaningful difference — particularly for those wanting to create \u003cstrong\u003ethree distinct zones\u003c\/strong\u003e beneath the structure (dining, lounge, and bar or kitchen), or for those using it as a veranda where full-width coverage along the house is the goal. The 6m x 3m is also the better choice for larger social gatherings where you need genuine all-weather coverage for a crowd.\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pergola need planning permission?\u003c\/h4\u003e\n\u003cp\u003eAt 6m x 3m, this is a substantial structure and we \u003cstrong\u003estrongly recommend obtaining confirmation from your local planning authority\u003c\/strong\u003e before installation. Depending on your garden size, property type, and location, permitted development thresholds may apply. Our team is happy to advise, but formal planning confirmation must come from your local council.\u003c\/p\u003e\n\n\u003ch4\u003eWhat makes the Leviathan different from cheaper pergolas?\u003c\/h4\u003e\n\u003cp\u003eThe Leviathan is a \u003cstrong\u003eDunster House\u003c\/strong\u003e product built from \u003cstrong\u003eslow-grown spruce, not cheap pine\u003c\/strong\u003e. The denser grain structure makes it significantly stronger and more durable. Combined with \u003cstrong\u003e120mm x 120mm posts\u003c\/strong\u003e, full pressure treatment, Smart Seal finishing, and precision pre-notched rafters, the Leviathan is engineered to carry a 6m span with complete structural confidence — something a budget pergola simply cannot do.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the difference between pressure treated and dip treated timber?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003ePressure treatment\u003c\/strong\u003e forces preservative deep into the timber fibres under pressure, providing long-lasting protection from the inside out. \u003cstrong\u003eDip treatment\u003c\/strong\u003e only coats the surface and offers far less protection over time. The Leviathan uses full pressure treatment plus \u003cstrong\u003eSmart Seal\u003c\/strong\u003e as an additional protective layer — backed by a \u003cstrong\u003e10-year guarantee against rot and insect infestation\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch4\u003eCan I grow climbing plants on this pergola?\u003c\/h4\u003e\n\u003cp\u003eAbsolutely — and the \u003cstrong\u003e6m span\u003c\/strong\u003e makes this the most spectacular pergola in the entire range for climbing plants. Wisteria, roses, jasmine, clematis, and ivy can spread across the full six metres of rafter, creating a breathtaking living canopy that completely transforms the feel of your garden or outdoor entertaining space.\u003c\/p\u003e\n\n\u003ch4\u003eAre all fixings included?\u003c\/h4\u003e\n\u003cp\u003eYes — \u003cstrong\u003eall fixings needed for assembly are included\u003c\/strong\u003e at no extra cost. As professional installation is included as standard, our team handles the entire build for you.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the guarantee?\u003c\/h4\u003e\n\u003cp\u003eThe Leviathan Wooden Pergola 6m x 3m comes with a \u003cstrong\u003e10-year guarantee against rot and insect infestation\u003c\/strong\u003e on the pressure treated timber, provided the care instructions supplied by Dunster House are followed.\u003c\/p\u003e","brand":"Dunster House","offers":[{"title":"Default Title","offer_id":61599595856202,"sku":null,"price":3300.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/5572\/1802\/files\/Leviathan-Pergola-6x3-Day.webp?v=1776108330","url":"https:\/\/www.bespokeoakandslate.com\/products\/leviathan-wooden-pergola-4m-x-3m-as-seen-on-itv-love-your-garden-120mm-posts-smart-seal-nationwide-installation-copy","provider":"Bespoke Oak and Slate","version":"1.0","type":"link"}