The details of permanence

Every custom thermal build requires precise standards of engineering, site preparation, and master carpentry. Here are the answers to our most frequent inquiries.

What are the site requirements for an outdoor build?

Why is thermal engineering and ventilation so critical?

What timber do you use for the interior?

We require a level, stable foundation—typically a poured concrete pad, gravel trench, or timber decking. Our team will coordinate with your contractor or architect to assess soil stability and slope before construction begins.

Proper sauna design requires a precise balance of heat, wood mass, and fresh air flow. We engineer custom ventilation paths that draw fresh air past the heater and expel carbon dioxide, preventing cold spots and ensuring clean, oxygen-rich steam.

We build exclusively with sustainably sourced, clear western red cedar. It offers exceptional thermal properties, resists rot and decay naturally, remains comfortable to the touch at high temperatures, and releases a rich, grounding aroma.