When designing the Dune Treehouse, the goal of Semple + Rappe Architects was to create a structure that seamlessly integrated with its natural surroundings while also offering durability, sustainability, and aesthetic appeal. One of the pivotal design decisions was the selection of cladding, and after careful consideration, Thermory Benchmark Ash Cladding emerged as the winner.
Durability Meets the Elements
Building in a natural environment presents a unique set of challenges. The Dune Treehouse is exposed to harsh elements like intense sunlight, saltwater air, rain, and snow. The cladding material needed to be both durable and low maintenance.
As architect Scott Rappe of Semple + Rappe explains, “My partner, Nicole Semple, and I have used Thermory on several projects, including our own homes. We love the color & finish, the variety of profiles, the durability and longevity, and the innovative JEM end detail.“
Because of Thermory’s thermal modification process, Thermory Benchmark Ash Cladding has an enhanced natural resistance to moisture, pests, and decay. The wood doesn’t require chemical treatments, making it a safe option with durability that performs well under the pressures of the outdoors. For a project like the Dune Treehouse, where long-term performance is critical, Thermory’s resistance to weathering is a perfect match.
Sustainable + Tree(house) Friendly
Sustainability was a cornerstone of the Dune Treehouse design, and Thermory Benchmark Ash Cladding seamlessly aligns with these environmental goals. Thermory wood is sourced from responsibly managed forests, ensuring the timber used has sustainability.
The thermal modification process itself is eco-friendly, using only heat and steam to treat the wood (instead of toxic chemicals).
As Rappe explains, “The use of Thermory allows us to have a high-performing, sustainable material that aligns with our values around environmental responsibility.“
Wood + The Wilderness
The aesthetic of the Dune Treehouse was designed to blend harmoniously with the natural surroundings—something that Thermory Benchmark Ash excels at. The warm, golden-brown tones of the wood, which gradually deepen into a silvery gray over time, reflect the natural aging process of timber, allowing the treehouse to evolve and blend more organically with its forest setting.
“The color and finish are one of the key reasons we love using Thermory,” says Rappe. “The wood takes on a beautiful, rich patina as it weathers, which helps the building feel timeless and connected to its environment.“
The natural texture of Thermory Benchmark Ash, with its tight grain and smooth finish, adds a modern yet organic feel to the treehouse, further elevating its design. Whether the treehouse is bathed in sunlight or shrouded in mist, Thermory’s striking appearance provides both a visual and tactile experience.
Low Maintenance + Long-Term Performance
One of the standout qualities of Thermory Benchmark Ash Cladding is its minimal maintenance requirements. Thanks to Thermory’s thermal modification process, the wood is inherently resistant to moisture absorption and pests. This makes it ideal for projects like the Dune Treehouse, which would be difficult to maintain regularly due to its remote location.
As Rappe points out, “In the end, the owners left it unfinished but will evaluate its appearance after a few years of weathering. We all like the idea that it can be cleaned and oiled at some point in the future if they change their minds.”
The flexibility to adapt to future preferences is a major benefit of Thermory Benchmark Ash—whether the owners choose to maintain its natural weathered look or refresh its appearance with oiling, the option is always there.
Thermal Performance
Beyond aesthetics and durability, Thermory Benchmark Ash also offers thermal benefits. The thermal modification process enhances the wood’s insulating properties, which can help to naturally regulate the temperature inside the treehouse. This contributes to a more energy-efficient living space, keeping it comfortable year-round while minimizing the need for heating or cooling. Given the treehouse’s remote location, energy efficiency was a key consideration for the design team.
Style + Nature Thrive at The Dune Treehouse
The Dune Treehouse is a perfect combination of durability, sustainability, and modern architecture. Thermory Benchmark Ash Cladding’s ability to endure the harsh elements without compromising on beauty or performance was essential to the success of the project.
Nicole Semple and Scott Rappe have used Thermory on several other projects, both professional and personal, and they trust its performance in even the most demanding environments. As Nicole says, “We love the variety of profiles, the innovative details, and the longevity of the material. Thermory is a brand we believe in, and we continue to rely on it for projects like the Dune Treehouse.”
For beauty that lasts and a footprint that’s light—choose Thermory.
Image Credits: Semple + Rapp Architects. Tom Harris Photography. Estkowski Construction.