Hawaii, with its unique geographical location and rich natural resources, offers several possibilities when it comes to finding local, sustainable materials for sauna construction.
Koa wood is a prized local option. It is native to Hawaii and known for its beauty and durability. Koa can withstand the heat and humidity typical of a sauna environment. Its rich, warm color and unique grain patterns add a touch of elegance to the interior. However, due to its limited availability and high value, it may need to be used sparingly or sourced from sustainable forestry operations to ensure its long-term viability. Another suitable wood could be ohia. It is abundant in certain areas of Hawaii and has good thermal properties. Ohia is also more resistant to decay, making it a practical choice for sauna construction. Using locally sourced wood not only reduces the carbon footprint associated with transportation but also supports the local economy and helps maintain the ecological balance of the region.
Pumice is a volcanic stone that is abundant in Hawaii. It has excellent insulating properties, which can help maintain the heat inside the sauna. Pumice can be used for flooring or even as a decorative element on the walls. Its porous nature allows for good heat retention and also provides a unique texture. Basalt, another volcanic rock found in Hawaii, is also a viable option. It is strong and durable, and can be used for constructing the sauna's base or benches. Using local stone materials adds a natural and rustic charm to the sauna while taking advantage of the geological resources of the area.
Coconut fiber, also known as coir, can be used for insulation. It is a sustainable byproduct of the coconut industry. Coir has good thermal resistance and can help keep the sauna warm. Coconut shells can be creatively incorporated into the design. They can be used as decorative accents or even made into small shelves or hooks inside the sauna. The use of coconut products not only makes use of a readily available local resource but also gives the sauna a tropical feel, in keeping with the Hawaiian atmosphere.