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Leviathan Wooden Pergola
Approx. W4m x D3m / W13' x D10'
(Sizes shown are approximate & full sizes are shown in the product specification)
1. Change size
- Responsibly sourced timber
- Heavy duty timber, built to last!
- 10 Year guarantee on pressure treated timbers
- Chunky posts for a strong and robust structure
Leviathan Wooden Pergola Overview
The Leviathan 4m x 3m is a beautiful, fully pressure treated, timeless wooden pergola that will give your neighbours something to talk about. It is ideal for those priceless family gatherings where you can all dine out in the garden. Add a little personal touch to the structure and start growing wisteria or honeysuckle, with some pretty lights up the sturdy posts.
Key Features
- Designed with the DIYer in mind for quicker install
- All fixings included at no extra cost
- Slow grown Spruce, not cheap Pine. Built to last!
- Customisable design
The large, sturdy structure the Leviathan has is the quality you want, as it is durable and robust for that all year-round use. For easy construction the Leviathan pergola comes with pre-notched rafters that have been precisely cut. To ensure you have all the components you need to get your pergola erect, we provide you with all the correct fitting and fixtures.
Additional Information
Established in 1994, we are Industry Experts that YOU CAN TRUST!
We are a UK family-run business supporting more than 700 jobs up and down the UK with dedicated distribution centres strategically placed across the country so that we can deliver products to you quickly. We have been selling garden buildings and structures for decades, so you can realise your dreams and create the perfect outdoor space, whether it is for relaxation, a place of work or a destination to fulfil your hobbies or to simply entertain…
…our vast range of products means that you are bound to find the ideal solution for YOU.
Why have so many Chosen to Buy from Dunster House?
Trusted by Tens of Thousands of Customers
Our customers are at the forefront of every decision that we make, and that is why we have been able to sell millions of products to satisfied customers up and down the county. Why not check out our Trustpilot reviews? They speak for themselves!
Buy Direct from The Manufacture!
Buy directly from Dunster House, and you will benefit from great value prices. Who wants to pay more than you have to? Well, at Dunster House you can cut out the middleman – We design, We make, We deliver!
Exceptional Value, Superb Quality
We are known for providing exceptionally high-quality products at affordable prices. Be wary of competitors who offer lower-spec products, cut corners to save on prices and try to upsell you on necessary items such as flooring, roofing material and safety features!
To ensure the very best quality, we only use slow-grown White Spruce Timber, which is harvested in cold climates to ensure solid, dense log rings. This gives the wood superior strength and longevity, and a much more consistent colour than the likes of Pine.
Products Designed for the DIY Market
All of our garden buildings are designed with the DIY market in mind. Why? Because it saves the need to employ a carpenter or builder helping you to save money and costs. Follow our detailed instructions and you will be showing off your achievements to friends and family in no time.
Speak with Experts and Buy with Confidence
Our in-house sales team are available during business hours to answer any questions you might have before making a purchase. With expert product knowledge, have your questions answered so that you can buy with confidence. Contact us today
A Wide Range of Products to Choose From
Explore our extensive range of products online or download one of our free brochures for more detailed information. Our user-friendly website allows you to easily search and filter through our garden buildings to find exactly what you need. Each product page provides comprehensive descriptions, high-quality images, and customer reviews to help you make informed decisions.
If you prefer a more traditional approach, our free brochures are available for download. These brochures provide in-depth insights and product specifications to help you get the most out of our products. Whether you’re browsing on the go or reviewing options at your leisure, our brochures are designed to be a convenient and informative resource.
The majority of our garden buildings, structures and climbing frames are made from natural materials therefore variations in the materials provided can occur along with natural changes and differences. In some cases too, it may be necessary to treat your product. Be an informed buyer and learn more.
Looking for some Inspiration?
Explore our customer inspiration gallery, a treasure trove of creativity and innovation, showcasing a myriad of garden ideas brought to life by our valued customers. Immerse yourself in a visual journey where elegant outdoor living spaces come together to inspire your own garden projects.
Dive deeper into our customer case studies, where compelling customer stories unfold alongside captivating images. These real-life examples illustrate how our products have been used to achieve stunning results, offering practical inspiration and guidance for your own endeavours.
Whether you’re envisioning a serene sanctuary, a productive workspace, or a stylish entertainment area, our customer inspiration gallery and Case Studies provide a wealth of ideas and solutions to help you realise your garden dreams. Let these stories and images ignite your imagination and empower you to create a garden space that reflects your unique style and aspirations.
All our garden buildings have been designed on the basis that any competent DIY customer should have no problem installing a product themselves in a short amount of time. You do not have to be an expert at DIY to build a Dunster House garden building, as we do provide you with comprehensive pictorial instructions. We totally understand that DIY is not for everyone therefore, you may want to consider getting in touch with a local carpenter or handyman to install it for you. But before you do, check out our construction video and decide for yourself!
There is nothing more annoying than being in the middle of building something and finding that you don’t have the right fixings to continue. We include all of the screws, nails and fixings that you will need to put your garden building together – not many of our competitors are that thoughtful. This eliminates the need to worry about the type of screws or the length of nails you might need to get started – it’ll all be with your delivery.
All of the timber in this garden building has been responsibly sourced and pressure-treated to ensure it lasts. Pressure treatment forces the wood preservative into the timber rather than simply dip treating (essentially just covering the exterior) like many companies still do.
Unlike some competition, we can offer a genuine 10-year guarantee against wood-eating fungal and insect infestation on pressure-treated timber.
All our Pressure Treated timber is for Use Class 3.
Unlike our competitors, we only use high-quality spruce timber on our wooden products rather than cheap pine or mixed timber. Why do we use slow grown spruce rather than the much cheaper knotty pine alternatives?
Spruce is considered more stable as it expands and contracts less than pine. This stability means that the spruce timbers in our garden buildings minimise splits from appearing as the timber changes along with the weather. We responsibly source all our timber, where it grows slowly in the cold northern regions. We all know the old adage of counting the rings to see how old a tree is, well our timber grows slower and takes longer to get to size meaning it has more rings in it. This means it has a tighter grain, and each ring helps prevent cracks and shakes from appearing in the densely packed timber.
Our wooden garden buildings and climbing frames really are built to last therefore we use only the highest quality, slow-grown spruce. Spruce is much more resilient to warps and splits compared to its cheaper alternative pine. Being a whitewood, it doesn’t discolour anywhere near as much as pine so it is also much more aesthetically pleasing for a garden structure. Considered more stable, less knotty and resinous than pine, spruce will also produce a lot less sap. It is also less dense meaning it is not as susceptible to mould and rot.
When we say chunky, we mean chunky! Our 120mm by 120mm chunky posts are made using high-quality spruce which has been pressure treated, before going through a laminating process which bonds the timber together. By laminating the timber, we can create a strong post which is less likely to shrink, swell and twist.
We also router grooves into the posts to not only give a distinctive look and mask the joints but to also further reduce the likelihood of the timber twisting. Most of our competition provide you with what they believe to be large posts, commonly 115mm thick. But when it comes to chunky gazebos, we think bigger is better!
All of our timber Pergolas, Gazebos, Carports and Porches are fully pressure treated as standard. We take the pre-cut lengths of timber and place them in a large pressure treatment tank, where the timbers are impregnated with a non-toxic preservative. We add a colourant during this process, giving the timber a rich brown colour. By pressure treating the timber, we can offer a genuine 10-year guarantee against rot and insect infestation. We only suggest that you apply a good quality water repellent to prolong the longevity of the timber.
The below image is a figurative example of how pressure treatment penetrates wood more effectively than the dip treatment technique which does not penetrate wood in the same way, often only providing a surface coat of treatment and stain. This method therefore offers less resistance to rot and decay.
Unlike some competitors, we pressure treat our timbers and what is more, we treat only after cutting to ensure no timber ends are left exposed!
A lot of dip-treated sheds require a preservative to be added upon installation or within one year of purchasing their sheds. Ours do not require this, saving you time and money!
Customise your garden structure by adding timber panels. The addition of wall panels will provide a useful and attractive way to hide certain areas of your garden. You can combine the half height panels with full height panels on the other sides of your structure, or even choose half glazed panels.
The thickness of the roof beams on our Pergolas show how the quality of our products is superior in that we are never sparing with the amount of timber we are willing to use. We do not compromise on quality when it comes to ensuring that our timber products will last and will stand the test of time and weather wear. Added to the increased durability of the thick beams, they also look impressive and will make your pergola stand out in your garden, adding to the magnificence of your new garden centrepiece.
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If you have any concerns about how to fix your pergola to the flat and level surface you are installing it onto, you can use the L-Brackets included in your fixing pack to attach these to the feet of the upright posts, as shown in the picture below. We would not advise burying the timber into the ground.
The posts are: 120mm x 120mm
We offer a genuine 10-year guarantee against rot and insect infestation on all pressure treated timber.
No, we do not have any showrooms or display sites. All business is completed online and via our website. If you do have any queries that haven’t been answered with the information provided online, please feel free to call our sales team on 01234 272445.
Yes, Dunster House offers finance through Black Horse FlexPay.
Black Horse FlexPay is a digital credit account which lets you buy now and spread the cost of your purchases.
An instalment plan is always available in your account when you are spending above £100 (up to £5,000); or you can pay using your flexible credit – all your purchases are consolidated into one monthly payment.
You can apply for finance by selecting Black Horse FlexPay at checkout.
For more information about FlexPay, visit https://www.blackhorseflexpay.co.uk/
Dunster House Limited is a credit broker and not a lender Registered Office: Caxton Road, Bedford, Bedfordshire, MK41 0LF. Registered in England and Wales number 02913901. Authorised and regulated by the Financial Conduct Authority, register number 1019922. Dunster House Limited is an appointed representative of Black Horse for the purpose of introducing credit provided by Black Horse.
Black Horse is a trading style of MBNA Limited. MBNA Limited Registered Office: Cawley House, Chester Business Park, Chester CH4 9FB. Registered in England and Wales number 02783251. Authorised and regulated by the Financial Conduct Authority.
MBNA Limited is also authorised by the Financial Conduct Authority under the Payment Services Regulations 2017, register number 204487, for the provision of payment services.
Dunster House commit to continuously improve the sustainability level of our sourcing, by favouring stricter more credible certification and verification standards, and sourcing requirements. We are committed to avoiding sourcing from unknown or unsustainable sources.
Where possible, Dunster House are committed to procuring wood products that have been certified against credible, internationally recognised standards for good forest management, to ensure that material originates from well managed forests. In line with this, we preference products certified to the standards of FSC (Forest Stewardship Council) and PEFC (Programme for the Endorsement of Forest Certification).
What about illegal timber?
Dunster House are committed to sourcing only material that is produced, processed and traded according to applicable legislation.
What is your Environmental Responsibility policy? Dunster House are committed to promoting responsible stewardship of the environment and its natural resources. We are committed to lessening the impact on the environment caused by our own activities, and those of our suppliers.
Do you have a Supply Chain Management policy? Dunster House will ensure that information about suppliers and material is gathered as part of the RPP. We will ensure regular engagement with our suppliers to ensure compliance with UKTR requirements, working with them to ensure continuous improvements. We will also specify that, wherever possible, that material sourced is covered by FSC and PEFC, to ensure responsible forest management.
Yes, we do! Some postcode restrictions do apply however we are pleased to be able to deliver to many parts of Scotland.
For more information – Where Do We Deliver?
We do not currently offer installation. All our garden buildings have been designed on the basis that any competent DIY customer will have no problem installing a product themselves in a short amount of time.
You do not have to be an expert at DIY to build a Dunster House garden building, as we do provide you with comprehensive pictorial instructions. Also, if you prefer video tutorials, we do have a selection of videos on YouTube which will support you in building your product.
We totally understand that DIY is not for everyone and it can be very overwhelming to start building your own garden product. Therefore, you may want to consider getting in touch with a local carpenter or handyman to install it for you.
If you do take on the challenge to put your garden building together, we are always here to help. Do not hesitate to contact us at any stage of putting your product together and we can provide you with all the assistance you may need. Contact our customer service team via email at [email protected].
We use slow-grown Spruce timber to make this Pergola. Spruce is less porous than Pine and so less likely to shrink, warp or split.
This Garden Structure is 2.33m (7' 7") high
Due to the unique design of a Dunster House product, in the vast majority of cases our garden buildings can be installed without the need for planning permission.
However, there are a few other factors to consider:
As all properties are different in size, shape and style we can only advise based on how we have designed our products, not on your property.
When to consider planning permission:
If the garden building exceeds over 2.5m tall – the majority of Dunster House buildings do not exceed this. If you intend on putting an outbuilding in front of the main elevation of your property (as it was originally built or as it was on 1st July 1948) will require Planning Permission. If you live in a listed or graded building If you live in a designated area such as areas of outstanding natural beauty, national parks, world heritage sites and conservation areas. If there is a possibility that over 50% of your garden would be taken up by outbuildings.Click here for more information on Garden Building Planning Permission in the UK.
Still not sure?
If you are still in doubt, we highly recommend getting in contact with your local authority before making a final purchase.
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A
Internal Eaves Height:
2.12m (6' 11")
B
External Depth:
3.20m (10' 5")
C
External Width:
4.24m (13' 10")
D
Overall Height:
2.33m (7' 7")
- Please Note: All sizes quoted are nominal
- Overall External Dimensions: 4.24m x 3.20m (13' 10" x 10' 5")
- External Width: 4.24m (13' 10")
- External Depth: 3.20m (10' 5")
- Internal Eaves Height: 2.12m (6' 11")
- Overall Height: 2.33m (7' 7")
- Ridge Height: 2.33m (7' 7")
- Uprights: 120mm x 120mm
- Timber: Pressure Treated Spruce
- Guarantee: 10 Years on Pressure Treated Timber against Rot and Insect Infestation
- Approx. DIY Assembly Time: 1 - 2 Days* *This is an approximate time only, based on 2 people. Assembly time may vary depending on season/weather conditions, foundation type, ability of those constructing, etc
- Please Note: All fixings needed for assembly are supplied
- Please Note: All wood is pre-cut (with the exception of trims) for quick and easy construction.
- Internal Area (m²):
Leviathan Wooden Pergola Ratings
Graeme
Great addition to our outdoor space
Excellent quality of timber. Simple to assemble. Great impact from the final result
Verified order
Andy McGovern
Fantastic product easy to assemble and
Fantastic product easy to assemble and delivered in the correct time frame. I also asked a few questions on messenger and got helpful honest answers quickly!! It’s 5 stars from me ⭐️⭐️⭐️⭐️⭐️
Verified order
Customer
Wooden pergola
Easy ordering, prompt delivery, very good quality. Would definitely recommend
Verified order
Delivery Information
* Free delivery on orders over £200.
We deliver our products to the mainland United Kingdom (England, Wales and most of Scotland). Some exceptions apply; these are illustrated on the map below.
Postcodes affected include:
- TR
- TQ6, 7, 8, 9
- EX19, 20, 21, 22, 23, 38, 39
- LD
- PL10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35
- SA
- KW
- HS
- ZE
- KA27, 28
- IV1, 4, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 63
- PA20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 80
- PH32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44
Green – Free Assisted Delivery
Red – We are unable to deliver to these areas.
Purple – For orders to Ireland & Northern Ireland, please visit our Distributor in Ireland here.
Delivery Service
All of our products are delivered using our own fleet of vehicles, not sub-contractors. We have a large number of vehicles dedicated to delivering our quality products so we can guarantee maximum care is taken during the delivery process.
Our deliveries take place Monday to Friday between the hours of 8:00 am and 6:00 pm.
When the delivery vehicle is unloaded, it is important that you check to make sure all of the items and instructions have arrived and are correct. You will also receive a component list to check your items against. If anything is missing or damaged, it is essential that you note this on your paper work when you hand it back to the delivery driver.
Prices for our delivery services can be found on individual products.
Please note that goods will be delivered to the first point of contact at the front of your property e.g. on your driveway. This must be within 20m from the delivery vehicle (Safely Parked at Kerbside). Our team will be responsible for assessing the risk of carrying out delivery upon arrival at the property.
Should you require further information on our assisted delivery services, please click here to read our Terms and Conditions, alternatively you can contact a member of our Sales Team.
See the locations we deliver from.
Q: Where can I find more information?
A: If you have any questions regarding your delivery, you can telephone our Dispatch Team. Contact details for the Dispatch Team of your nearest branch can be found on your order confirmation. If you need to track your delivery or access your manuals in advance of your delivery, you can visit the Customer Log-In Area of our website.
Thank you for taking the time to read about our terms and advice during this period. We hope you can enjoy your Dunster House garden product for many years to come.
Why Buy From Us?
Established In 1994
Buy with confidence! Established for over 30 years, you can rest assured of our knowledge and experience as industry leaders.
10 Year Guarantee*
On pressure treated timbers*. We don’t dip-treat our timber unlike some competitors. Dip treatment isn’t as effective at protecting against rot and infestation!
Industry Leading Features
All products are uniquely designed and of high quality with many industry leading features you will struggle to find anywhere else!
Designed in the UK
A UK company and family run business. Our products are designed and distributed from our 11 UK distribution centres.
Millions of DIY Products Sold
Many have bought from us over the last 30+ years due to our superior specification and the fact that our products are designed with the DIY market in mind.
FREE Speedy Delivery*
Free delivery on most products*. Delivered to you by our own fleet of vehicles and dedicated drivers.
Customer Gallery
Customer images are to be used as a guide only and may show different sizes to what is advertised. We do not endorse any modifications that may be shown. See specification for full details.
Inspiration/Customer Stories
Similar Products
- *Free delivery on orders over £200.
- *Spring25 whilst allocated stock lasts.