Introducing The Fortress Range
The Duratuf Fortress Range is the ultimate garden shed designed and built to withstand the toughest conditions in New Zealand. Our sheds are constructed with a full-timber frame that offers unbeatable strength and rigidity, ensuring they can handle anything Mother Nature throws at them.
At Duratuf, we understand that you want a shed that is both tough and stylish. That's why we have designed our Fortress Range to be uncompromisingly strong while also looking great. Our sheds are not only practical but also add aesthetic value to your outdoor space.
They can also be extensively adapted, upgraded and accessorised to fit your requirements using our 3D shed builder.
The Thinking Kiwi's shed
Extra Thick Hi-Tensile Steel Cladding
When it comes to steel cladding, we aren't trying to go as thin as possible. It's just not the Duratuf way. Duratuf full timber framed garden sheds have 0.4mm thick hi-tensile anti-rust steel. That's up to 60% thicker than some competitors, meaning that it's not only stronger, but your shed will stay looking better for longer!
30 Year Steel Warranty
When buying a garden shed, it is important to have peace of mind that it is going to stay looking good for a long time. That is why we guarantee the integrity of out steel cladding for 30 years. And, being a NZ Manufacturer, we are here for you in the unlikely event that you have a problem with your cladding. Conditions apply.
Full Timber Frame
Our garden sheds feature a machine-finished timber frame that serves as a sturdy backbone. The interlocking of the timber at the corners provides additional rigidity and strength, resulting in a highly durable structure.
Typically, sheds are assembled using nuts, bolts, and screws. However, our Duratuf Fortress sheds are built differently, with the cladding firmly attached to the frame using galvanized nails, similar to those used in garages. This method of construction braces the structure and enhances its resilience, enabling it to withstand the test of time.
Advanced Water Run Off
Surely everybody wants a weatherproof shed? It’s important then, that water flows away from your shed to ensure your valuable gear is kept dry. The unique design of our sheds ensures that water is not trapped on or around them.
Duratuf timber frame sheds feature a unique construction method where the cladding is nailed to the top and bottom plates. This method ensures that water runs away from the shed easily as there are no channels to trap leaves, dirt and water that will leak, or sit and corrode the cladding. (Fig. 1)
Conventional shed designs require a channel at the top and bottom of the shed to hold the cladding together. (Fig. 2)
Fortress kitsets can be modified to allow the wall cladding to extend past the base of the shed when placing on a raised concrete floor. This completely eliminates the possibility of water running back into the base of your shed.
It is necessary to order the Raised Base Modification for the Fortress range at the time of ordering the shed.
Duratuf Fortress garden sheds feature unique full-size wall sheets that wrap around the corners (Fig. 7), eliminating any corner joins. This gives the shed amazing waterproofing qualities and is clearly superior to most conventional corner designs (Fig. 8)
Wrap around corners also provides exceptional bracing strength and eliminates any sharp edges.
Wrap Around Roof
The roof design on the Fortress range also features pre-folded roof sheets that wrap over the end walls to create a watertight finish. This makes installation easy and ensures that there are no leaks.
We offer an array of colour options with 9 to choose from for our Fortress Range.
If you would like to have a combination of two colours, for example Lichen walls with
Karaka roof and door, choose any two colours from the selection above.
Superior NZ Made Quality
When you invest in a Duratuf garden shed, you are investing in a New Zealand made quality product that you can rely on.
Manufactured on home turf means that the product is suited to New Zealand conditions. Further to that, only the best materials are used, from NZ grown timber through to premium hi-tensile steel and quality fastenings.
Keeping Kiwis in jobs plays an important role in our community and gives the added assurance of controlled quality
during manufacture, coupled with a locally backed warranty - we’ll be here if you need us!
Building a Raised Concrete Base
Step 1 - Establish size of shed and excavate sufficient area. Remember to allow for rear roof overhang of 80mm and 30mm for end walls.
Step 2 - Ensure that the base substrate is compacted firmly. We suggest that the slab should be 80mm thick in the middle and 100mm thick around the edges (Fig 2).
Step 3 - Lay boxing to the required size. The raised slab size should be 15mm smaller than the overall base size of the shed and at least 30mm above the ground line. See Fig. 1
Step 4 - Lay plastic sheeting if required. Plastic sheeting under slab will prevent moisture coming through from underneath.
Step 5 - Pour concrete and screed flush.
Premium Clear Roof Panel
Duratuf Clear Roof Panels provide UV free natural daylight inside your shed. this is perfect if you are using your shed for a workshop and need light while the door may be closed. For gable shed models you can choose from either single side or both sides of the roof. Please note that clear roof panels may condensate more than a steel roof during cold weather.
Raised Floor Modification
The unique design of all Duratuf sheds allows them to be easily modified for use with a raised concrete pad.
This modification causes the wall cladding to overhang a concrete floor slab, which creates excellent weather-proofing, something that can't be done with non-timber framed garden sheds.
Note: When you select the raised floor modification option, the head height of the product will be lowered by 30mm. This change in dimension may be important to consider if you have specific requirements for the use of the product. This only needs to be specified when ordering a Kiwi range shed.
Timber Floor Kit
Duratuf Timber floor kits create a strong, level working platform that fit inside the shed and on top of the bottom plate, not underneath like other sheds. This has a number of advantages including: It creates a level access into the shed. The cladding extends past the floor level and stops water leaking back into the shed. The extra weight inside the shed provides exeptional hold-down ability. The Custom made Duratuf Floor Kit has everything you need including thick gauge timber floor boards, ground treated H4 joists, galvanised nails and an attractive doorway flashing.
Organise your workspace with the Duratuf Built-in Tool Board. Different sizes are available to fit into the end wall of most sheds. They come cut to fit and complete with ply, extra framing and installation hardware.
It’s a bloke thing - a built-in workbench that’s solid enough to mount your vice on and tough enough to take the hard knocks. Different sizes are available for most models and are custom built to fit into the end wall of the sheds.
Door Security Upgrades
Keep intruders at bay by upgrading your shed doors to keyed locking handles. These are not only more secure, but also easier to open with one hand if you are holding an armful of gear as you enter.
Bolt Down Kit
If your shed is to be attached to a concrete floor or base, the Bolt Down Kit allows you to securely anchor your shed without damaging either your concrete pad or the timber frame of the shed. The kit consists of hot dipped galvanised steel brackets, with Dynabolts to anchor into the concrete floor and screws to attach to the bottom frame.
Peg Down Kit
The Duratuf peg down kit is perfect for anchoring your garden shed on ground such as grass, dirt or metal. The 6 x H5 treated pegs are driven into the ground and screwed to the bottom plate with the stainless steel screws provided. A timber floor kit can then be fitted over the top if required.
Extra Wall Height
If you require a little more head space in your Duratuf garden shed, simply opt for the Extra Head Height Option. This is especially useful in a workshop situation where you are spending a lot of time working in your shed.
Solar Shed Light
If you aren't running mains power to your shed our solar shed light with its super bright LED technology provides light even after dark. Comes with a 1 year warranty.
This innovative mains free shed alarm is easily fixed inside the framing of your Duratuf shed. Features an ultra-loud 130db siren.
Heavy Duty Workbench
For a solid working area and extra storage capacity you need a heavy duty work bench. This well designed bench has a unique lock together construction with a 250Kg load rating per shelf support. Approximate size: 1140mm W x 500mm D x 900mm H
5 Tier Shelf Unit
Maximise your storage space with this bolt free interlocking kitset shelf unit. Each shelf support has a 350kg load rating with quality MDF shelves. With a galvanised frame it is built to last - an ideal complement to your Duratuf shed. Approximate Size: 900mm W x 400mm D x 1800mm H
Your review of Introducing The Fortress Range
5 Considerations when buying a garden shed
Justin quickly runs through 5 important things to consider when choosing your next garden shed.
Building a shed not really your cup of tea? Justin shows you how to find an assembly service to build your Duratuf shed.
Garden Shed Range Comparison
In this video Justin highlights the differences between our Kiwi, Fortress and Semi Timber Frame range sheds.
How to use the 3D Shed Builder
How to use the 3D Shed builder on mobile
What is a Raised Floor Modification?
In this video Justin explains what a Raised Floor Modification (RFM) is and when you need it for your Duratuf Garden Shed. You only need to order an RFM if purchasing a Kiwi Range shed. All other ranges either have it built in, or it can be done by you during assembly.
Why Timber Framing?
Fortress Assembly Video
In this video Keith will show you how to assemble a Duratuf Fortress shed, with the tricks and tips he's learned from a decade of shed building. He is assembling a TUF400, but the principles are basically the same for any Fortress shed.
The Fortress Range
Justin gives a quick rundown of the features that make our Fortress Garden Shed the toughest shed on the market.