Thermal Architecture

A dark timber thermal house standing quietly at dusk on a rocky shoreline

THERMA

A modular steam-centered thermal house. Designed for private residences and hospitality.

A beam of daylight crossing the steam inside a thermal room

More Than Heat

For centuries, thermal spaces have been more than places to get warm.

Across cultures, they became part of daily life — places people returned to for rest, recovery, and time away from the demands of the outside world.

This project builds on that accumulated knowledge, translating it into a contemporary architectural and thermal system for private residences and hospitality.

III

Architecture
Follows Experience

Every thermal space begins with a clear understanding of the thermal experience it is designed to create.

That intention guides every architectural decision — from the proportions of the room and the geometry of the benches to the placement of openings, the choice of materials, and the way water moves through the space.

Nothing is arbitrary. Every element supports the intended thermal environment.

View from the doorway into a warm timber thermal room with a large L-shaped bench and a plaster-clad stove
A wide timber bench glowing under a warm line of light in a dark thermal room

Bench Geometry

Wide, substantial benches are proportioned for lying down, changing position, and receiving heat and steam evenly.

Steam gathering against a sculpted timber ceiling in a dark thermal room

Ceiling Geometry

The ceiling is shaped to influence how heat and steam gather, move, and descend through the room.

A small square window casting a single beam of daylight into a dark timber room

Light & Openings

Small, precisely placed openings bring light into the room, frame the outside world, and preserve the sense of enclosure.

Charred black timber cladding meeting warm oiled interior timber

Material Language

A dark charred-timber exterior creates a durable protective skin and gives the house its quiet presence. Inside, thick timber surfaces are chosen for warmth to the touch, thermal stability, moisture resistance, and the way they age over time.

A wet stone and timber floor draining beside a bronze shower in a steam-filled room

Built for Water

Drainage, waterproofing, and durable junctions are integrated from the beginning, allowing the room to be washed, soaked, and used as a true wet environment.

IV

Environmental Systems

The architecture creates the foundation. Environmental systems extend what the room is capable of doing.

Working quietly in the background, they help shape steam, air movement, cooling, lighting, and sound — giving the space greater precision, flexibility, and consistency without changing its essential character.

  1. 01Dynamic VentilationActively manages airflow, steam movement, air exchange, and oxygen levels.
  2. 02Steam GenerationAutomated water delivery creates consistent steam with precise control over timing and intensity.
  3. 03Fresh AirIntroduces fresh air where it is needed without disrupting the thermal environment.
  4. 04Cold MistExpands the range of cooling and thermal contrast available within a session.
  5. 05LightingSupports different atmospheres throughout the day and different modes of use.
  6. 06SoundIntegrated audio becomes part of the environment rather than a separate layer added to it.
Steam gathering under the ceiling of a dark timber thermal room lit by a warm line of light beneath the bench

V

Thermal OS

Thermal OS acts as the nervous system of the thermal environment.

It continuously reads the changing conditions of the room and coordinates heat, steam, airflow, and fresh air to shape its microclimate in real time.

Rather than running fixed sequences, the environment remains responsive — adjusting quietly as conditions change and shaping how heat and steam are experienced by the body.

VI

A Thermal System,
Not a Fixed Form

THERMA is not a single building repeated from project to project. It is a thermal system built around a consistent set of principles.

The proportions of the room, bench and ceiling geometry, materials, environmental systems, and Thermal OS form the core of the platform.

Around that core, the architecture can change — in scale, layout, materials, supporting spaces, and relationship to its surroundings — allowing each project to belong naturally to its setting.

VII

Fifteen Years
of Practice

For more than fifteen years, we've been designing, building, and operating thermal spaces in daily use.

Today, our thermal centers welcome more than 200 guests each day.

THERMA brings together what we've learned through years of building, operating, observing, and refining thermal spaces.

VIII

Start a Conversation

For private residences, hospitality projects, and larger thermal environments. Tell us about the setting, intended use, and scale of your project.

studio@therma.house →