XL Treehouse Hardware Kit for 1-2 Trees, Tribeam D90
Premium XL Fastening for your Treehouse – in 1 or 2 trees
✔ Secure hold for large treehouses
✔ For platforms up to 25 m² (1 tree) or 40 m² (2 trees)
✔ Recommended trunk diameter: from 45 cm (1 tree) or 40 cm (2 trees)
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XL kit – Product details
Products included in the set
Product dimensions
All dimensions and details can be found on the respective product pages:
GTS Allstar 2.0:
Load Capacity - Set XL
- in softwood up to 6 tonnes*
- in hardwood up to 15 tonnes*
* Important: The actual load capacity depends on many factors, e.g. lever arm, load direction or wood strength. Always calculate with a safety factor!
Please read the following pages:
Assembly instructions & video
To install the GTS Screws, a hole must be pre-drilled in the tree – you can find the right installation tools in our shop.
Detailed step-by-step instructions can be found on our YouTube channel.
Shipping & Delivery
I am extremely satisfied with TheTreehousShop. Great delivery service and the material is perfectly made. The tree house has made the fathers and children happy :-)
It was a good purchase, the supports look fantastic, the explanations and advice were perfect, shipping to Spain was very fast, I will definitely buy them again!
Build a treehouse with triangles – safe and tried and tested!
Whether you're building a small playhouse for the kids or a deluxe treehouse between two trees, you can rely on our triangular support structures. Four GTS Allstar screws provide solid support and sufficient distance from the trunk, ensuring stable construction and healthy tree growth.
How it works – triangle mounting
Attaching the triangle
- Prepare the triangle and brackets on the ground.
- Screw the upper GTS screw into the tree.
- Slide on the triangle and align it precisely.
- Mark the lower drill hole and screw in the second GTS screw.
- Secure the triangle with the Position-Rings.
Measuring trees
✔ Make sure that the trunk is sufficiently thick in the area of the platform – especially if two triangles are to be placed opposite each other in the same tree.
✔ The GTS Screws are mounted on top of each other – the vertical distance should be at least 1,5 m (4,9 ft).
Trees move!
Not an issue with the 1-tree treehouse – with 2 trees, you need to weigh up the pros and cons: Permanently mounted triangles easily compensate for small tree movements of up to approx. 5 cm. For larger movements, the joists (red) should be mounted on sliding bearings on one side (more information here).
The perfect fastening for your treehouse
We recommend this XL Tribeam Kit for all projects – whether you're building a small playhouse for children or a large treehouse to live in. The only important thing is that the trunk should be at least 35 cm (13.8 in) in diameter at platform height. Is your tree thinner? No problem – we have the right solution for that too:
Successful projects
Our customers love the triangles – because they allow you to realise all your treehouse dreams.
Together with our building instructions, every project is a success. So – what are you waiting for?
Ask the Treehouse Pro
Need help? I'd be happy to advise you – please take a look at our FAQs first, as most questions are answered there ;)
Crooked tree? Build yourself a test triangle!
Slight inclines of less than 6° are usually not a problem – it is important to keep the lever forces low and align the main load so that the tree cannot tip over.
DIY tip: For crooked trees, build a test triangle out of wooden slats in advance and hold it in the tree – this will allow you to see immediately whether the triangle will fit your tree bolts later on.
How much does a tree move in the wind?
A tree that is 40 cm (15.7 in) thick at a height of 2 m (6.6 ft) will sway approx. 2 cm in all directions during a storm. The higher you go, the stronger the movement.
Important: Leave at least 20–30 cm clearance at the edge of the roof – also to allow for growth in thickness of the tree.
Our tip: Observe your tree during storms – every tree reacts differently!
How thick do my wooden beams need to be?
That depends on the span, the load and the area of application. You can find all the details in our Step 11: Timber guide.
How do I mount the screws at the same height?
A simple tube level is the cheapest (10 - 15 €) and most effective solution:
- Mark the centre of the drill hole for the first GTS Screw.
- Transfer the height to all other trees using a hose level and water level.
- Make sure that the GTS Screws are perfectly aligned, e.g. using a compass.
You can find detailed instructions on our YouTube channel.