Cube Saunas
Ula Mini Ebony.The compact black cube.
The Ula Mini in Shou Sugi Ban charred timber, three-person compact spec in an architectural matte-black finish.
Overview
Ula Mini Cube Sauna, Ebony.
The Ula Mini Ebony is the compact insulated cube in Shou Sugi Ban charred spruce, same three-person capacity as the beige spec, same Harvia 7kW heater, same insulated construction, but the exterior is deep matte black.
In a smaller cube, the charred finish is disproportionately effective. On a 2.0 x 1.8m cube in a small garden, matte black reads as considered sculpture where a natural or beige finish would read as a garden shed.
Same 10-year structural warranty, same panoramic glass front, same hemlock interior. The only meaningful difference from the beige spec is the exterior finish.
Key features
What makes it different.
3-person capacity
Single-tier bench comfortably seats three adults or two + one child.
Shou Sugi Ban ebony
Charred and oiled spruce exterior, architectural matte black.
Compact footprint
2.0 x 1.8m external, fits gardens where a Classic wouldn't.
Panoramic glass front
Full-height toughened glass gable and door.
Harvia 7kW heater
Right-sized for the internal volume. 22-minute warm-up.
Fully insulated
100mm rockwool insulation, vapour barrier, hemlock lining.
Specification
The numbers behind the object.
- Capacity
- 3 adults
- External footprint
- 2.0 x 1.8 m
- Interior ceiling height
- 2.0 m
- Cladding
- Shou Sugi Ban charred spruce
- Insulation
- 100mm rockwool
- Lining
- Knot-free western hemlock
- Heater
- Harvia electric 7kW
- Heat-up time
- ≈ 22 minutes
- Power requirement
- 32A single-phase
- Roof
- EPDM flat
- Warranty
- 10 yr structural
Living with it
How it actually works day to day.
In a small garden, colour matters more than in a large one. Ebony on a Mini turns the cube into a design object rather than a utility building, the choice we recommend when the sauna is visible from the house or terrace.
Maintenance is genuinely lower than a painted or stained finish. Re-oil every 3–4 seasons for deep matte black; leave it to silver to graphite if that suits your scheme better.
Interior spec is identical to the beige Mini, hemlock throughout, single-tier bench, 7kW Harvia. Choose ebony over beige for aesthetic reasons only.
Best for
Who typically buys this one.
- Small design-conscious urban gardens
- Gardens where the sauna is visible from the house
- Pale-stone or pale-render properties
- Owners who want lower maintenance than paint
Real installations
Ula Mini in Scottish gardens.
Every photograph on this page is a genuine Signature Garden Rooms installation.
Only the exterior finish. Ebony is Shou Sugi Ban charred spruce (deep matte black). Beige is thermowood with clear oil (warm honey natural). Interior, heater, glass, bench and warranty are identical.
Next step
Ready to talk about the Ula Mini Cube Sauna, Ebony?
Tell us your garden, your access, and roughly when you'd like it in. We'll come back with a considered price, honest lead time, and any planning notes for your site.
Fully insured · £5m public liability · Falkirk-based, working across Central Scotland