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Dunster House Ltd.
Incorporated. 1994
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1. Protecting your building
2. Optional extras
3. Foundation options
4. Delivery choices
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One Person Delivery
Two Person Delivery
Collection: Monday – Friday (9:00 – 17:00)
inc. VAT
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Use promo code BFO1 at checkout to claim your free roof felt or discounted shingles.

If you’re looking for a place to relax in, then look no further than the Vantage 350! This Summerhouse is perfect for those moments when you just want to sit back, relax and enjoy the view of your garden! With long windows to allow plenty of natural light to flood in, the Vantage Summerhouse puts you in a peaceful and relaxing environment, to either entertain or for those moments when you just want to be alone to get into that book you’ve been meaning to read! 

Product Features
Summerhouses Heavy Duty Frames
Heavy duty frames
The chunky 60mm or 86mm thick corner posts coupled with the 45mm thick framework either side makes our summerhouses very solid. The 16mm thick cladding adds to this rigidity and gives a substantial look and feel.
Summerhouses 4mm Toughened Glass
Summerhouses Styrene
4mm Toughened Glass
We use 4mm toughened glass in our windows and doors for increased safety and security. It's much better than 3mm horticultural glass, commonly found in garden buildings, as it's a lot harder to break, and if ever it is broken it breaks into small pieces rather than large shards. It is also much harder to scratch than the plastic alternatives, styrene, acrylic and perspex, so will preserve your clear view out for far longer.
Summerhouses Strong Cylinder Lock
Summerhouses Strong Cylinder Lock II
Strong cylinder lock
A strong cylinder lock will help keep your summerhouse secure. It'll keep your belongings safe from unwanted visitors, and it'll stop the kids from messing up your relaxation space.
Summerhouses No Glued Together Offcuts
Summerhouses No Glued Together Offcuts II
No glued together offcuts
We only use full lengths of timber in our buildings - we don't glue separate pieces together with finger joints. Not only are they stronger, but they look much better too.
Summerhouses Georgian Bars
Summerhouses Georgian Bars II
Georgian Bars
Our windows and doors come with optional sculpted Georgian bars that sit firmly against the glass, rather than float in front of them. When applied to the windows and doors they add a traditional, elegant charm to your cabin. The Georgian bars are easily removed for maintenance, or if you decide you prefer the look of the building without them.
Summerhouses 10 Year Timber Guarantee
Summerhouses 10 Year Timber Guarantee II
10 year guarantee
The bearers of your garden building are pressure treated to help protect your garden building from the ground up. We provide a 10 year guarantee against rot and insect infestation for all pressure treated timbers.
Summerhouses Fixings Included
Summerhouses Fixings Included II
Fixing pack Included
We include all of the screws, nails and fixings needed to put your garden building together, not everyone is that thoughtful! So there's no need to worry about the type of screws, or length of nails etc you might need to get started, it's all there in the pack!
Summerhouses Avoid Sagging Roof
Summerhouses Avoid Sagging Roof II
Avoid sagging roof
Our summerhouses have robust 70mm x 35mm roof beams, which are reinforced by additional supports at the sides of each roof panel. With the metal spider brackets this gives a very strong roof structure to make sure that roof sagging is an issue that will only be suffered by the customers of companies that supply lesser products.
Summerhouses Slow Grown Spruce
Summerhouses Slow Grown Spruce
Slow Grown Spruce
Slow grown Spruce is used to make our summerhouse walls. This is because Spruce produces less sap than Pine and other redwoods, reducing any stains and damage to the furniture you place in your summerhouse.
Summerhouses Customise Your Design
Summerhouses Customise Your Design II
Customise your design
The panel construction allows for a customisable summerhouse. Depending on the layout of your garden, you can choose which side the French windows and doors go on. Choosing the perfect view will be all down to you.
Summerhouses High Internal Eaves (6'4'')
Summerhouses High Internal Eaves (6'4'') II
High internal eaves
The high internal eaves (1.94m/6'4") give a spacious, light and airy feel once you're inside. This is the lowest point of the roof which quickly rises, giving plenty of headroom for all of you over 6'4"!
Easy To Build Panel System Vantage 350
Easy to build panel system
The 16mm shiplap walls come in panels, so each piece of timber is cut to size. These panels are easy to slot in-between the solid 60mm or 86mm corner posts, making the construction of your summerhouse quick and simple, almost like a giant jigsaw puzzle.
What is a Summerhouse?
A Summerhouse is a garden building made from pre-fabricated timber panels attached to a timber framework. Summerhouses also include several long windows, allowing large amounts of sunlight to fill the garden building.
How big is this Summerhouse?
This Summerhouse’s measurements are: 3.50m (11' 5") x 3.00m (9' 10")
How high is this Summerhouse?
It is 2.45m (8' 0") high
How much is this Summerhouse?
This product starts from £1,359.99
What foundation do I need for this Summerhouse?
We recommend a flat, level concrete base at least 100mm bigger on each side. e.g. A 4m by 3m building would have a base of 4.2m by 3.2m. See more details here.
Where can I visit you? Do you have a store near me?
We have 6 branches across the UK. Click here to find the nearest one! Please check with us before you visit if you are travelling to see a particular product.
What timber do you use in this Summerhouses?
We use slow-grown spruce timber for the main structure of the Summerhouse. Spruce is less porous than Pine and so less likely to shrink, warp or split.
What type of glass do you use in this Summerhouse?
We only use 4mm toughened glass in our Summerhouses which is a far more hard-wearing and resilient material than commonly used Perspex and styrene.
What is shiplap cladding?
Shiplap cladding is named after the old boatmaking technique with overlapping boards, which means that the natural timber can expand and contract with the seasons and not create gaps. The curve or channel of shiplap cladding enables water to run off easily, helping to protect your Summerhouse from the effects of damp.

We deliver our garden buildings to mainland United Kingdom (England, Wales and Scotland). Some exceptions apply; these are illustrated on the map below.

Scottish areas may be subjected to slightly longer delivery turnarounds, please contact us for details. FREE delivery on selected products over £200 to mainland England and Wales.

Delivery Price

Green - £19.99 delivery fee on all orders under £200.
Yellow - £59.99 delivery fee.
Orange - £84.99 delivery fee.
Red - We are unable to deliver to these areas.

Assisted Delivery

If you cannot provide an able bodied person to offload the vehicle with the help of our driver, we can provide additional manpower with our Assisted Delivery Service. The driver will arrive with some help to unload the lorry, meaning that you can put your feet up.

We offer this service on all items that are delivered, we do not offer this on our couriered products. Prices for this service can be found on individual products.

Should you require further information on our standard or assisted delivery services, please contact a member of our Sales Team.

Scottish areas may be subjected to slightly longer delivery turnarounds, please contact us for details.

Vantage Summerhouse 350 W3.5m x D3.0m

This image shows a brief reference to how your products will arrive. All of our garden buildings are made from kiln dried quality graded timber; if it is to be stored prior to construction and treatment all parts must be covered to prevent moisture from warping the timber.

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