The selected concept for the Grotto prescribed a solid, simple presence on the exterior, while the interior followed dynamic air movements in curvature forms. Partisans experiments with the materials, and selected wood, due to its specific properties and developed a new process of fabrication; utilizing state of the art 3-D technology to scan, model and build the Grotto.

As a free-standing sauna, the Grotto uses two high performance ovens that ensure efficiency and control. There are vents and fans in-place that allow the building to breathe seasonally and prevent rot or mold in the structure. The rest of the systems were based on controlled air flow. Insulation was used on the building to not only protect its components from heating up or cooling down too quickly, but also to make the Grotto more energy efficient.

The specific type of wood, Cedar, was then selected based on a number of factors; such as resistance to rot, aroma, colour, local sources, and quality. The openings were fabricated in Ontario using double and triple glazed high efficiency annealed glass to ensure high energy savings and durability.

Furthermore, the internal structure of the Grotto was tightly sealed and a layer of energy efficient aluminum foil was adhered to all internal surfaces creating a convective air plenum between the internal wood panels and the space in which they were mounted. This allows for the wood to expand and contract evenly with even heat movement all around.

Grotto Sauna, Georgian Bay, Ontario, Canada
Program: sauna
Architects: Partisans
Partisans Team: Alexander Josephson, Pooya Baktash, Jonathan Friedman, Shamir Panchal, Ivan Vasyliv, Betty Vuong, Nathan Bishop
Contractor: Jordan Construction, Chantler Barging
Wood Fabricator: MCM Inc
Wood Installation: MCM Inc
Metals: MCM Inc
Facade Systems: Building Science Inc
Engineering: Moses Inc
Glass Systems: Agnora
Sauna Systems: Energy Misers
Lighting Consulting: G2J Design Inc