Lunawood is a pioneer in decorative wood solutions, with 25 years of expertise in the thermal modification of wood. Their mission is to reconnect people with nature by bringing the calming essence of the forest into urban environments.
Treehouses ignite the imagination like few other building typologies. These small, playful structures bring architecture and nature into proximity, creating spaces that encourage exploration, learning, and connection with the natural environment. At the same time, treehouses must be resilient to the movement of trees and continuous exposure to wind, moisture, and temperature variation. Selecting appropriate materials is therefore essential to ensure durability, safety, and long-term performance.
Lunawood ThermoWood® products are ideal for treehouse construction and design, providing lightweight, dimensionally stable wood solutions capable of performing reliably in structures exposed to movement, moisture, and changing weather conditions.
1. Understand the structural behavior of trees and design flexible support systems
The fundamental question when designing a treehouse is how the structure will relate to the tree trunks and how the building will be supported safely in the canopy. Because trees grow and move over time, structural systems must accommodate motion while maintaining stability.
Treehouses can be supported using several strategies:
- Anchored to a single tree trunk
- Spanning multiple trunks
- Suspended using steel cable systems
- Supported by an independent structural core combined with tree anchoring
In Treehouse Extreme by Sullalbero SRL, a hybrid structural system combines a stair volume that supports the two-storey structure with steel cables connected back to the main tree. The use of lightweight wood materials helps reduce structural loads while maintaining durability in outdoor conditions.
2. Select cladding materials that balance durability, weight, and natural character
Cladding for treehouses must be lightweight, weather-resistant, and visually compatible with natural surroundings. Ventilated façade systems are particularly effective because they help manage moisture and support long-term performance in exposed environments.
Thermally modified wood is well-suited for treehouse cladding because it:
- Maintains dimensional stability under changing humidity conditions
- Resists decay without chemical treatments
- Performs reliably in outdoor climates
- Provides a natural aesthetic that blends with forest environments
In the Light Cute Treehouse by Sullalbero SRL, ventilated ThermoWood® cladding is paired with insulation to create a comfortable interior environment while protecting the building envelope from weather exposure.
During the thermal modification process, natural resin is removed from the wood, improving stability and reducing maintenance requirements. When exposed to sunlight, untreated wood gradually develops a silver-grey tone. This natural aging process enhances the connection between the structure and its surroundings, making it particularly suitable for nature-based architecture such as treehouses.
3. Design decking systems that support movement, drainage, and comfort
Decking plays a central role in the treehouse experience, functioning as circulation space, gathering areas, and observation platforms. These surfaces must perform reliably under outdoor conditions while remaining comfortable and safe for everyday use.
Effective decking systems should:
- Provide a stable footing under varying weather conditions
- Allow water to drain efficiently
- Enable easy maintenance and board replacement
- Maintain comfortable surface temperatures
In Treehouse Extreme by Sullalbero SRL, decking boards are installed over a base that allows water drainage and facilitates cleaning and maintenance. The natural insulation properties of wood help moderate temperature changes, making the surface comfortable to walk on and reinforcing the sensory connection between users and nature.
Explore Lunawood's product catalog or visit their website for more information.
