L Treeangle Assembly Kit for 1-2 Trees, T-Plate
Strong Attachment Kit for building Treehouses – 4 side support structures
✔ Flexible support structure for medium-weight projects
✔ For platforms up to 15 m² (1 Tree) or 25 m² (2 Trees)
✔ Recommended trunk diameter: 40 cm (15,7 in) or more
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L Tree Brace Kit – Product Details
Products included in the set
Product dimensions
All dimensions and details can be found on the respective product pages:
Strut Connector T-Plate:
Load Capacity - Set L
- in softwood up to 4 tonnes*
- in hardwood up to 8 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!
* GTS Side only use in pairs opposite each other!
* Avoid overhanging rotary movements!
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
Fast delivery, good advice, great quality – Treehouse Shop is the best place for your treehouse project! Many thanks to the Treehouse team and Mr Wahlländer!
Many thanks to Vitus and his team for the excellent products and advice. The Treehouse Screws are amazing and have made our summer project a reality.
Open up new possibilities!
With this kit, you can build four sturdy wooden brackets that are attached to the side of the tree. This creates a stable base for a spacious platform – regardless of the tree's growth pattern.
The brackets are also ideal for treetop walkways or adventure courses, allowing walkways and footbridges to be attached to the tree elegantly, safely and gently.
Professional installation tips – Side Tree Braces
Only in pairs with counter bearing!
If a Tree Brace is loaded far outwards, lever and tensile forces are generated on the upper GTS Side. To eliminate these forces, a counter bearing is necessary. Therefore, Tree Braces must always be mounted in pairs and opposite each other on the trunk – this is the only way to ensure maximum load capacity and safety.
Avoid twisting movements
Tree Braces should primarily be loaded vertically. Lateral forces with a long lever arm can damage the drill hole of the upper tree bolt. To prevent wobbling or twisting of the platform, additional anchoring is recommended – for example, by means of a staircase set in concrete and connected to the platform.
Installation in crooked trees
A major advantage of the Tree Brace Attachments over classic triangular designs is that each Tree Brace Attachment can be individually adjusted to the shape of the tree. This allows you to mount the treehouse precisely and flexibly, even on slanted trunks or thick branches – without any compromises.
The right fastening for every treehouse project!
This Tree Brace Kit in size L is suitable for small to medium-sized platforms – even a light treehouse can be built on it. The system really comes into its own with crooked trees: the tree braces can be flexibly mounted and adjusted.
Compared to the set in size M, this set with T-Plate is significantly more stable. If necessary, you can replace the lower GTS Friend with another GTS model to accommodate even higher loads.
Our recommendation: If your tree has a trunk diameter of 40 to 45 cm, our larger Tribeam Kits with the GTS Allstar are often the better choice, as the thicker screw copes very well with leverage and rotational forces.
Successful projects
Whether you want to build a treehouse, a treehouse fastening or a treehouse fastening, our fastening systems make every dream come true. Be inspired by the DIY projects of our customers!
Ask the Treehouse Pro
Need help? I'd be happy to advise you – please check our FAQs first, as most questions are answered there ;)
Tree Brace or Triangle Support Structure?
Tribeam Support Structures are often the better choice because their closed construction makes them particularly rigid and stable. Another advantage is that the tree has more room to grow because the beams can be mounted at a distance – unlike with the GTS Side, where they sit close to the end grain.
Tree Brace Attachments, on the other hand, offer maximum flexibility – ideal if you need to accommodate irregular growth patterns or thick branches.
In some cases, a combination of Tribeam and Tree Brace Attachments is the best solution.
For more information, see Step 9: Support Structures.
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.
- Ensure that the GTS Screws are perfectly aligned, using a compass for example.
You can find detailed instructions on our YouTube channel.
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 connect the wooden beams?
For stable connections of the floor joists, we recommend partially threaded screws:
- Up to 160 mm in length: stainless steel screws (ø 6–8 mm)
- From 160 mm: galvanised screws (ø 6–10 mm)
Joints can be made smooth. Secure heavily loaded areas with additional fully threaded screws, angle brackets or PU glue.
You will find everything you need to get started in our Wood Screw Pack.