Material profile

Thermowood

Dark heat-treated timber
Photo: Pexels contributor · Pexels License · source
Typical useExterior cladding and interior lining where stability and dark tones are wanted
Visual appearanceRich, even brown from heat treatment; takes dark stains and charred finishes well
Thermal behaviourHeat treatment reduces moisture movement, giving stable surfaces at sauna temperatures
Resin levelNone
Moisture resistanceHigh
MaintenanceModerate; periodic re-coating if a stained or charred finish is used
Exterior suitabilityExcellent
Interior suitabilityGood
Bench suitabilityGood

Thermowood is heat-treated softwood prized for stability and its affinity for modern dark finishes. It anchors the archive’s contemporary cube and mobile profiles.

Profiles using Thermowood

All profiles →

SA-CA-030 · Reference Configuration

Luxury Cube Sauna Suite

  • Luxury
  • 5–6 people
  • Electric or wood-burning
  • Charred thermowood
  • Dual-ready 9–12 kW class
  • Hot room + changing room + shower
  • Charred thermowood skin
  • 14 × 8 ft, professional build
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SA-CA-003 · Design Profile

Black Timber Cube Sauna

  • Modern
  • 5–6 people
  • Electric or wood-burning
  • Charred / black-stained thermowood cladding
  • Dual-ready: electric or wood-burning
  • Generous glazed front wall
  • Flat roof, 8 × 8 ft footprint
  • Black thermowood cladding
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SA-CA-040 · Design Profile

Modern Shed Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermowood
  • ≈6–8 kW electric heater class
  • Steep mono-pitch roof
  • Generous glazed tall wall
  • 9 × 6.5 ft footprint
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SA-CA-045 · Design Profile

Glass Cube Garden Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermowood with tempered glass
  • ≈8–10 kW electric heater class
  • Two glazed faces at a corner
  • Flat roof, 7.5 × 7 ft
  • Professional build
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SA-CA-048 · Design Profile

Electric Mobile Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermowood over a marine-grade shell
  • ≈6–9 kW electric heater class
  • Trailer-mounted, plug-in
  • 11 × 7 ft cabin on the deck
  • Professional build
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SA-CA-049 · Design Profile

Compact Trailer Sauna

  • Minimalist
  • 1–2 people
  • Wood-burning
  • Thermowood over a marine-grade shell
  • Wood-burning, single-axle trailer
  • Compact self-contained cabin
  • 9 × 6 ft cabin on the deck
  • Seats one to two
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SA-CA-050 · Design Profile

Six-Person Event Trailer Sauna

  • Nordic
  • 5–6 people
  • Wood-burning
  • Thermowood over a marine-grade shell
  • Wood-burning, dual-axle trailer
  • Highest mobile capacity
  • 14 × 7 ft cabin on the deck
  • Seats four to six
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SA-CA-052 · Concept Profile

Solar-Ready Off-Grid Sauna

  • Modern
  • 3–4 people
  • Wood-burning
  • Thermowood
  • Wood heat + solar-ready roof
  • High-performance envelope
  • 9 × 7 ft reference footprint
  • Seats two to four
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SA-CA-055 · Concept Profile

Modern Floating Sauna Raft

  • Modern
  • 5–6 people
  • Wood-burning
  • Thermowood with tempered glass
  • Wood-burning, glazed floating raft
  • Flat roof, lake-facing glass
  • 14 × 9 ft platform
  • Professional marine build
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SA-CA-035 · Design Profile

Deck Pod Sauna

  • Modern
  • 1–2 people
  • Electric
  • Thermowood
  • ≈4.5–6 kW electric heater class
  • Sits on an existing deck
  • 6 × 5 ft footprint
  • Seats one to two
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SA-CA-032 · Concept Profile

Two-Person Garden Pod Sauna

  • Minimalist
  • 1–2 people
  • Electric
  • Thermowood
  • ≈4.5–6 kW electric heater class
  • Rounded compact shell
  • 6 × 5 ft footprint
  • Seats one to two
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SA-CA-031 · Reference Configuration

Cold-Climate Insulated Cube Sauna

  • Nordic
  • 5–6 people
  • Electric
  • Thermowood
  • ≈8–10 kW electric heater class
  • High-performance cube envelope
  • Minimal glazing for low heat loss
  • 8 × 7.5 ft footprint
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SA-CA-027 · Design Profile

Minimalist Cube Sauna

  • Minimalist
  • 3–4 people
  • Electric
  • Thermowood
  • ≈6–8 kW electric heater class
  • Reductive, near-frameless cube
  • Minimal glazing, low heat loss
  • 7 × 7 ft footprint
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SA-CA-024 · Design Profile

Thermowood Barrel Sauna

  • Minimalist
  • 3–4 people
  • Electric
  • Thermowood staves
  • ≈6–8 kW electric heater class
  • Full thermowood, dark tone
  • Very stable, low maintenance
  • 6 × 6.5 ft footprint
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SA-CA-023 · Reference Configuration

Electric Backyard Barrel Sauna

  • Nordic
  • 3–4 people
  • Electric
  • Thermowood staves
  • ≈6–8 kW electric heater class
  • Thermowood barrel, no chimney
  • 6.5 × 6.5 ft footprint
  • Beginner kit-style build
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SA-CA-072 · Reference Configuration

Compact Thermowood Shed Sauna

  • Minimalist
  • 3–4 people
  • Electric
  • Thermowood
  • ≈4.5–6 kW electric heater class
  • Narrow single-slope shed roof
  • 8 × 4.5 ft slim footprint
  • Thermowood cladding
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SA-CA-018 · Design Profile

Deck-Mounted Cabin Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermowood
  • ≈6–8 kW electric heater class
  • Mounts on an existing deck
  • 8 × 7 ft reference footprint
  • Deck-load and drainage focus
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SA-CA-015 · Design Profile

Poolside Cabin Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermowood
  • ≈6–9 kW electric heater class
  • Outdoor rinse shower
  • Glazed wall to the pool
  • Slab-founded, wet-area detailing
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SA-CA-011 · Design Profile

Modern Flat-Roof Cabin Sauna

  • Modern
  • 5–6 people
  • Electric
  • Thermowood
  • ≈8–10 kW electric heater class
  • Flat membrane roof, low profile
  • Horizontal thermowood cladding
  • 10 × 7.5 ft reference footprint
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SA-CA-062 · Design Profile

Poolside Glass Cube Sauna

  • Modern
  • 3–4 people
  • Electric
  • Thermally modified pine with a black-framed glass front
  • ≈6–9 kW electric heater class
  • Pool is the cold plunge
  • 8 × 8 ft cube footprint
  • Generous glass front to the water
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SA-CA-008 · Design Profile

Mobile Trailer Sauna

  • Nordic
  • 3–4 people
  • Wood-burning
  • Thermowood over a marine-grade shell
  • Road trailer foundation
  • Wood-burning, relocatable
  • 12 × 7 ft cabin on the deck
  • Professional build
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SA-CA-064 · Concept Profile

Rooftop-Ready Pod Sauna

  • Minimalist
  • 1–2 people
  • Electric
  • Thermowood cladding
  • ≈4.5–6 kW electric heater class
  • Rounded lightweight shell
  • 6 × 5 ft reference footprint
  • Seats one to two
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SA-CA-061 · Construction Archetype

Mountain Chalet Cabin Sauna

  • Rustic
  • 5–6 people
  • Wood-burning
  • Thermally modified spruce with a heavy timber frame
  • Wood-burning, high stone capacity
  • High-performance cold-climate envelope
  • 12 × 10 ft reference footprint
  • Steep snow-shedding gable
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SA-CA-070 · Design Profile

Urban Courtyard Cube Sauna

  • Minimalist
  • 3–4 people
  • Electric
  • Dark-stained thermowood
  • ≈5–7 kW electric heater class
  • Flat-roof minimalist cube
  • 6.5 × 6.5 ft footprint
  • Dark-stained thermowood skin
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SA-CA-004 · Concept Profile

Cold-Climate Pod Sauna

  • Minimalist
  • 1–2 people
  • Electric
  • Thermowood
  • ≈4.5–6 kW electric heater class
  • High-performance compact envelope
  • 6 × 5 ft reference footprint
  • Seats one to two
View profile