A pure, reductive cube with almost no glazing and a single flush door. It is the calmest, most efficient version of the cube form — form defined entirely by proportion and a continuous thermowood skin.
Owners wanting a quiet, efficient architectural cube without the heat loss of a glazed wall.
Best suited for: Design-led backyards · Owners prioritising calm and efficiency · Contractors comfortable with concealed detailing
| Sauna type | Cube |
|---|---|
| Style | Minimalist |
| Setting | Backyard |
| Capacity | 2–4 people (3–4 people) |
| Approx. footprint | 7 × 7 ft (~49 sq ft) |
| Approx. internal volume | 300 ft³ (~8.5 m³) |
| Ceiling-height range | 7–7.2 ft |
| Glazing level | Minimal |
| Insulation class | Cold Climate Insulated |
| Foundation options | Concrete Piers, Ground Screws |
| Roof type | Flat |
| Heating options | Electric |
| Approx. heater class | 6–8 kW (electric) |
| Stone-capacity preference | Moderate |
| Ventilation principle | Balanced mechanical inlet and high outlet in a tight cubic volume |
| Build difficulty | Advanced |
| Maintenance level | Low |
All values are approximate reference ranges for planning and comparison.
Final heater selection must follow the heater manufacturer's sizing instructions, safety clearances and local electrical or fire-code requirements.
The most reductive cube in the archive — a study in efficiency and proportion without glazing. Compare with the glazed cubes to see the trade-off directly. Figures are reference ranges for planning.
It is smaller, has minimal glazing and a reductive single-material skin, making it more efficient and calmer than the glazed black cube.
About 6–8 kW electric; confirm sizing with the manufacturer and code.
It makes the interior more enclosed but markedly improves efficiency and warm-up.
Two to four on an L-bench.
Yes — the flat roof and concealed-fix skin make it an advanced build.
This catalogue profile is intended for preliminary planning and comparison. Final dimensions, structural design, heater selection, electrical work and safety clearances must be confirmed by qualified professionals and the relevant manufacturer documentation.
Added to the catalogue on . Catalogue Editorial Team at Outdoor Sauna Index.
SA-CA-003 · Design Profile
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