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Dunster House Ltd.
Incorporated. 1994
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Lines re-open today at 8:30AM
Protecting your building
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Collection: Monday – Friday (9:00 – 17:00)
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Product Features
Sheds & Storage 10 Year Timber Guarantee
Sheds & Storage 10 Year Timber Guarantee II
10 Year Guarantee
All of the slow-grown spruce timber used in this shed is pressure treated and is guaranteed against rot and insect infestation for up to 10 years. To prolong the longevity of the timber, we recommend applying a good quality water repellent to the external timbers. 
Sheds & Storage Log Sheds Pressure Treated
Sheds & Storage Log Sheds Pressure Treated II
Pressure Treated
All of the timber used on this Heavy Duty Taarmo Shed is delivered to you pressure treated. The process of pressure treatment ensures that you don't need to spend your time, money and energy treating the timber yourself for up to ten years. Our pressure treated timber carries a genuine 10 Year Guarantee against fungal decay and insect infestation without any need for reapplication of treatment during this time. To prologue the longevity of the timber, we recommend applying a good quality water repellent to the external timbers.​
Sheds & Storage Avoid Planning Permission Taarmo
This building is under 2.5m high.
Why does this matter? Well, under permitted development rights buildings under 2.5m high can be placed as close as you want to a boundary (eg. a fence line) without planning permission. Buildings that are over 2.5m high, however, need to be placed over 2m away from any boundary (eg. a fence line), which means that with taller buildings you end up with a lot of space behind them. If you want to find out more about permitted development rights see our planning guide
Sheds & Storage No Glued Together Offcuts
Sheds & Storage No Glued Together Offcuts II
No Glued together Offcuts
We only use full lengths of timber in our garden buildings - we don't glue separate offcut pieces together with finger joints. Not only are full lengths of timber stronger, but they look much better too. The panels we make are half height rather than divided along the width, so you don't get joins in the cladding where one panel meets another.
Log Construction Taarmo Heavy Duty Log Shed
Log construction
This Heavy Duty Shed uses rectangular logs to create an inherently sturdy and durable structure. The logs interlock in exactly the same way as our Log Cabins, thanks to their Tongue and Groove design and notched ends (visible in image) If you are looking for a garden building that is strong and long-lasting, look no further!  
Sheds & Storage Log Shed Tongue And Groove Walls
Tongue and Groove Walls
The Taarmo Heavy Duty Shed features tongue and groove spruce timber. This allows the timber pieces to fit together flawlessly while still allowing for the natural movement of the spruce. This means you will have less chance of unsightly gaps appearing in your shed over time.
shed 11mm floor included
pressure treated bearers and floor
11mm T&G Floor Included As Standard
The Taarmo tool shed comes with pressure treated floor bearers and 11mm slow-grown spruce tongue & groove floorboards as standard. It is the perfect material for the job, especially when comparing to cheaper pine or OSB boards found in the market. The tongue & groove floor-boards are fitted by slotting each board into each other, fixing the boards to the bearers as you go, creating a sturdy surface with an attractive appearance
Shed 11mm roof boards
11mm T&G Roof Included As Standard
We supply the Taarmo shed with an 11mm tongue & groove roof boards as standard. We make the roof from single pieces of slow-grown spruce as this is the perfect material for the job, especially when comparing to alternatives found on the market. The tongue & groove roof boards are fitted in the same way as the floor, where each board is slotted into the next, creating a strong surface and attractive ceiling.
Taarmo shed secure hinge
Taarmo shed secure hasp and clasp
Secure Hinges, Hasp & Clasp

Our sheds feature zinc-plated high-security hinges. Why is this important? Quite simply the zinc plating prolongs the lifetime of the hinges by protecting the metal underneath from rain which causes rust. 


What makes our hinges secure? Well, not only do the hinges have to be screwed on but also bolted into the thick timbers which make up the door frame and door. Bolting the hinges into the framework makes it harder for intruders to unscrew the doors and steal your belongings.


The sturdy hasp and clasp have been designed so that in the closed position, its fixing screws are covered by the metal clasp, making it difficult to be removed from the shed. 

How high is this Shed?
A: It is 1.90m (6' 2") high
Do you offer any guarantees or warranties on this product?
A: We offer a genuine 10-year guarantee against rot and insect infestation on pressure treated timber.
What timber is this Shed made from?
A: We use slow-grown Spruce timber for the main structure of the Shed. Spruce is less porous than Pine and so less likely to shrink, warp or split.
Where can I visit you? Do you have a store near me?
A: 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.
Do I need planning permission for this Shed?
A: Take our quick survey to find out!
What base do I need for this Shed?
A: 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.

We deliver our products 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 to postcode areas PL, TQ, TR, EX may take 1 week longer, beyond the delivery shown on the product page.

Delivery Price

Green - £19.99 delivery fee on all orders under £200.

Blue - Delivery to postcode areas PL, TQ, TR, EX6, EX7, EX20, EX21, EX22, EX23, EX39 may take 1 week longer, beyond the delivery shown on the product page.

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.

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 also a much more consistent colour than the likes of Pine.


Despite the care we take in selecting the very best Timber available, it’s not like predictable brick or cold steel, this natural material has characteristics and quirks unique to every log.


Because our timber logs once fed water and nutrients back and forth from its roots to its leaves, its very nature is to be porous and swell up when it gets wet. Any wooden product will do this throughout its life, but there are a few things you can do to help limit this movement.


These include:

1. A great design!

  • Don’t worry, we’ve got this one covered. We’re experts when it comes to all things timber, so we have designed our products from the ground up with its natural properties in mind.

2. Water Repellent Treatment.

  • How you customise and decorate your product is up to you, however we would recommend that you use an appropriate water repellent treatment. This really helps minimise the amount of moisture that the timber can absorb. Therefore minimising the risk of any major movement.
  • (Please note: water repellent treatment is not the same as pressure treatment, which protects against rot and insect infestation, and which we guarantee for 10 Years!)

3. Ventilation.

  • Keeping your timber building ventilated is no less important than keeping your house well ventilated. This is especially true if you plan to cover up your floorboards with something (double check with an expert, that the material is suitable to do so), as moisture can become trapped between layers of non-breathable materials and build-up, leading to floors becoming rotten.

4. Regular Seasonal Maintenance.

  • Whether you opt to build your product yourself, or have us do it for you, don’t be afraid to tighten the odd bolt here and there. Your product is a life improving investment, so it’s only right to give it some love and care from time to time. Make sure that it’s properly treated before the rainy months, and you make adjustments to doors and window frames, when needed.


Natural Timber Properties

After building your timber product, this natural construction will begin to ‘settle’. This means that you will likely see some natural timber imperfections appear. These types of natural imperfections can include:


  • Cracks


Cracks On Wood


  • Splits

Splits On Timber Held With A Green Rounded Safety Cap

  • Shakes


Shakes On Wood Panel


  • Warping / Twisting

Warped wood panels, twisted Wood panels


  • Expansion and Contraction


Expansion And Contraction Of Wood On Garden Building


Please be aware that, as these are natural timber properties they are not considered as defects under our Terms & Conditions (for more information, check out our Ts&Cs here). However, in most cases, these imperfections will not impact the integrity or function of your timber product, and/or can easily be rectified. For advice on how to rectify these and for more support, please get in touch with our Customer Services Team on


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