{"product_id":"leviathan-wooden-pergola-5m-x-3m-120mm-posts-smart-seal-treated-nationwide-installation-included-copy","title":"Leviathan Wooden Pergola 4m x 3m | As Seen on ITV Love Your Garden | 120mm Posts | Smart Seal | Nationwide Installation","description":"\u003ch2\u003eLeviathan Wooden Pergola – 4m x 3m | As Seen on ITV Love Your Garden\u003c\/h2\u003e\n\u003cp\u003e📺 \u003cstrong\u003eAs featured on ITV’s Love Your Garden\u003c\/strong\u003e — the nation’s favourite garden transformation programme, and the show that chose the \u003cstrong\u003eLeviathan Wooden Pergola\u003c\/strong\u003e to create a stunning outdoor space on national television.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eLeviathan Wooden Pergola 4m x 3m\u003c\/strong\u003e by \u003cstrong\u003eDunster House\u003c\/strong\u003e is the pergola that means business. Four metres wide and three metres deep, it delivers a genuinely substantial outdoor living space — large enough to entertain properly, defined enough to feel like a room, and built with the \u003cstrong\u003eimposing 120mm x 120mm upright posts\u003c\/strong\u003e that give the Leviathan its unmistakable presence.\u003c\/p\u003e\n\u003cp\u003eThis is the sweet spot of the Leviathan freestanding range. Wide enough to zone into separate areas — a dining end and a lounge end, or an outdoor kitchen along one side — but perfectly proportioned for most UK gardens without overwhelming the space. It’s the pergola that garden designers reach for when they want impact without excess.\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. All timber is \u003cstrong\u003efully pressure treated\u003c\/strong\u003e (not merely dip treated) and finished with \u003cstrong\u003eSmart Seal timber sealant as standard\u003c\/strong\u003e, providing a superior barrier against moisture and UV damage. 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.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e📺 \u003cstrong\u003eAs seen on ITV Love Your Garden\u003c\/strong\u003e — trusted by the nation’s leading garden transformation programme\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGenerous 4m x 3m rectangular footprint\u003c\/strong\u003e — the perfect balance of space and proportion for most UK gardens\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eImposing 120mm x 120mm upright posts\u003c\/strong\u003e — heavyweight structural strength and premium visual impact\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\u003ePerfect for climbing plants\u003c\/strong\u003e — 4m of rafter span ideal for roses, wisteria, and jasmine\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 W4m x D3m (W13'1\" 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 — the same structures trusted by \u003cstrong\u003eITV’s Love Your Garden\u003c\/strong\u003e to transform outdoor spaces on national television. Every Leviathan order includes \u003cstrong\u003eprofessional installation and Smart Seal timber treatment as standard — completely free of charge\u003c\/strong\u003e. No hidden costs, no surprises.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eWas this pergola really featured on ITV Love Your Garden?\u003c\/h4\u003e\n\u003cp\u003eYes — the \u003cstrong\u003eLeviathan Wooden Pergola by Dunster House\u003c\/strong\u003e was featured on \u003cstrong\u003eITV’s Love Your Garden\u003c\/strong\u003e, the nation’s favourite garden transformation programme. It was chosen by the show’s team to create a stunning outdoor living space — a testament to the quality, visual impact, and versatility of the Leviathan range.\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. Our experienced fitting teams cover the whole of Mainland UK. The price you see is the price you pay — fully installed, no extras.\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 looking and 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.\u003c\/p\u003e\n\n\u003ch4\u003eWhy is the 4m x 3m the most popular size?\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003e4m x 3m\u003c\/strong\u003e hits the sweet spot for most UK gardens — wide enough to zone into a dining area and a lounge or outdoor kitchen, but proportioned to sit comfortably in a typical garden without dominating it. It’s the size that garden designers and programmes like \u003cstrong\u003eITV Love Your Garden\u003c\/strong\u003e reach for when they want maximum impact in a real-world setting.\u003c\/p\u003e\n\n\u003ch4\u003eHow does the 4m x 3m compare to the 3m x 3m and 5m x 3m?\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003e4m x 3m\u003c\/strong\u003e sits between the two — offering more space and zoning potential than the 3m x 3m, while remaining more proportionate for typical UK gardens than the 5m x 3m. It’s the most versatile size in the range and the one most commonly chosen for entertaining-focused outdoor spaces.\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, with \u003cstrong\u003e120mm x 120mm posts\u003c\/strong\u003e, full pressure treatment, Smart Seal finishing, and precision pre-notched rafters. It’s the pergola trusted by \u003cstrong\u003eITV Love Your Garden\u003c\/strong\u003e — and that’s not a coincidence.\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\u003eYes — the \u003cstrong\u003e4m span\u003c\/strong\u003e and open rafter design are ideal for climbing plants such as roses, wisteria, jasmine, clematis, and ivy. Over time they create a spectacular natural canopy across the full width of the pergola, adding fragrance, shade, and a beautiful living element to your outdoor space.\u003c\/p\u003e\n\n\u003ch4\u003eDoes this pergola need planning permission?\u003c\/h4\u003e\n\u003cp\u003eIn most cases, a pergola of this size falls within \u003cstrong\u003epermitted development rights\u003c\/strong\u003e and does not require planning permission, provided it meets standard conditions. We recommend checking with your local planning authority to confirm your specific situation before installation.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the guarantee?\u003c\/h4\u003e\n\u003cp\u003eThe Leviathan Wooden Pergola 4m 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":61599580946762,"sku":null,"price":3100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/5572\/1802\/files\/Atlas-Wooden-Pergola-Love-Your-Garden_xl.webp?v=1776107914","url":"https:\/\/www.bespokeoakandslate.com\/products\/leviathan-wooden-pergola-5m-x-3m-120mm-posts-smart-seal-treated-nationwide-installation-included-copy","provider":"Bespoke Oak and Slate","version":"1.0","type":"link"}