Piil Treehouse, Estonian architecture photos, Baltic pre-fabricated building, Piiluma, Northeast Europe home
Piil Treehouse in Estonia
27 September 2023
Design: Arsenit
Location: Estonia, Northern Europe
Photos © Yifan Liu
Piil Treehouse by Aresnit
Piil, named for the Estonian word ‘piiluma’ for ‘peeking/looking’ is an elegant, 9m tall pre-fabricated treehouse with a compact plan, elevated to minimise ground-level presence and indeed, provide generous views out to the vast Estonian wilderness.
The 19m2 structure stands on one ‘leg’, suspended over a terrace to create an open-air ‘living room’ sheltered from rain and snow. A discreet door provides access inside, with the cladding layer peeled back to reveal the metal structure supporting the impressive cantilever. Both ‘leg’ and the accommodation modules above act as large steel trusses — made in-house by the Client, metal manufacturer Levstal Group. Wrapped in hit-and- miss pine cladding, the ‘leg’ contains a staircase, services, and a sports equipment store. The raised bedroom provides greater seclusion, a unique vantage point, and an opportunity to rest among tree branches.
The interior of the space is conceived as a large piece of joinery, all in white-washed oak. The interplay of levels allows horizontal surfaces to be used informally as tables, seats or display spaces, while the vertical timber panelling adds a tree-house-like quality. Piil offers the facilities for remote work and comfortable rest: a king-size bed, two working tables, a kitchenette, ample concealed storage, and a generous bathroom with a top-lit shower. The main highlight is the huge window / skylight paired with the generous hammock mezzanine — a place to feel suspended mid-forest, with nothing but the panoramic view ahead and the gentle sway of treetops above.
Externally, Piil is finished in untreated, thermally modified pine by Thermory — a material that requires little maintenance and will weather gracefully to a silver-grey, helping the building blend in with the pine tree forest in which Piil has been carefully placed. The use of this rain-screen cladding with a square cross-section adds visual depth; filters light and air into the building while giving it a monolithic appearance; provides shade to the openable window; encloses a ground-level storage space; screens services and MVHR grilles. Finally, the directionality of the timber cladding accentuates Piil’s unique form.
All the elements of Piil are designed to be finished in a factory off-site and then delivered to remote and scenic locations, where they are assembled into a whole. Off-site fabrication means a higher level of workmanship, resulting in a well-insulated accommodation unit with triple-glazed low-E glazing. An efficient air-source heat pump with MVHR provides ventilation, heating, cooling and hot water throughout most of the year, with additional support from an integrated radiator or external condenser on particularly cold or hot days.
The first, prototype version of Piil was completed in early 2023. In total, four Piils are planned for the site, where they have been carefully positioned using a point cloud model of the forest to frame sunset views of the Jägala river.
Arseni Timofejev, the founder of Arsenit, said: “The client’s brief was for raised ‘glamping’ accommodation, which could be used as a retreat or a micro-hotel. Inspired by the observation towers placed in scenic locations throughout Estonia, Piil imagines what it would be like to stay in one overnight. In the first, prototype version of Piil, a single-storey ‘leg’ elevates the accommodation 4.25m above ground — in future iterations, taller ‘legs’ could raise the accommodation units further into, or even above the tree branches!”
Video featuring this project available on architects website: https://www.arsenit.com/
Piil Treehouse, Estonia – Property Information
Client / Contractor: Levstal Group
Architect / Lead Designer: Arsenit
Structural Engineers: SD Engineers; AVC Projekt OÜ
M&E Consultants: AS Infragate Eesti; ICEkonsult OÜ; Pat-Pat Projekt OÜ Joinery: ITB Interior OÜ
Photos: Yifan Liu.
Piil Treehouse, Estonia images / information received 270923 from Arsenit Architects
Location: Estonia, Northern Europe
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