STEAM ROOMS

Bespoke Steam Rooms — The Hammam Experience, Built Into Your Home

 

A steam room is not a wet sauna. It is an entirely different heat modality — one that operates at lower temperatures than a Finnish sauna but at 100% relative humidity, enveloping the body in dense, warm vapour that penetrates the skin, opens the airways, and produces a deeply therapeutic experience that no dry heat environment can replicate. Where a sauna challenges the body with intense heat, a steam room seduces it — the moist heat feels immediately softer, the breathing is easier, and the sensation of the steam on the skin is closer to the ancient hammam tradition of Turkish bathing than to the Nordic sauna ritual. At The Sauna Company, our bespoke steam rooms are designed and built on-site across London and Surrey, tiled from insulated backing boards over high-integrity vapour barriers, starting from £14,995 fully installed — and they are among the most technically demanding and visually dramatic builds we undertake.

 

Built Differently to a Sauna — and That Difference Matters

 

A steam room cannot be built the way a sauna is built. Where a sauna uses timber as its primary structural and aesthetic material, a steam room operates at 100% humidity and requires a fully waterproof enclosure — tiled surfaces over insulated, vapour-proof backing boards, with every joint, corner, and penetration sealed to a standard that prevents moisture from migrating into the surrounding building fabric. Get this wrong and the consequences are serious — mould, structural dampness, and a steam room that deteriorates within years rather than decades. We have seen the results of steam rooms built by contractors who did not understand the vapour management requirements, and they are not pretty. Our steam rooms are built from the substrate out — insulated tile backing boards, high-integrity vapour barriers, correctly specified adhesives and grouts rated for continuous wet heat exposure, and a steam generator sized precisely for the sealed volume of the enclosure. The tile finish, the lighting, the bench design, and the steam inlet positions are all resolved in the 3D design before any work begins.

 

Designed to the Level of the Finest Wet Room in Your Home

 

A bespoke steam room from The Sauna Company is finished to the same standard as the finest wet room or bathroom in your home — because that is exactly what it is. We work with the full range of tile formats and finishes, from large-format porcelain slabs to handmade zellige tiles to natural stone, and we design the lighting scheme, bench layout, steam inlet positions, and chromotherapy integration as a coherent interior rather than a collection of functional components. Benches are typically built from teak or iroko — hardwoods that perform exceptionally well in continuous wet heat environments — and the steam generator is specified from leading manufacturers including Harvia and Tylo, sized for the exact sealed volume of the enclosure and installed with a remote digital control panel. Whether you are building a standalone steam room, a steam room adjacent to a sauna as part of a wider wellness suite, or a combined hammam and relaxation space, we design and build it as a single, resolved project.

 

The Wellness Installation That Your Bathroom Deserves to Become

 

Steam rooms are, in our experience, one of the most underutilised wellness installations available to London and Surrey homeowners — underutilised because they are often assumed to be more complex, more expensive, or more space-hungry than they actually are. A properly designed steam room can be built in a space as compact as a standard shower enclosure. It can sit adjacent to an existing bathroom without major structural work. And it can transform a morning routine or an evening wind-down into something genuinely restorative in a way that no shower, bath, or infrared panel can match. If you have been considering a steam room for your home — or if you are planning a bathroom renovation and want to explore whether a steam room is achievable within your project — call us on 0208 058 0871 or book a free design consultation. We will tell you honestly what is possible in your space and what it will cost to do it properly.

 

Steam Room FAQ's

​

What is a steam room and how does it differ from a sauna?

 

A steam room and a sauna are fundamentally different heat environments that produce their therapeutic effects through opposite approaches to temperature and humidity. A sauna — whether Finnish, infrared, or hybrid — operates at high temperature and low relative humidity, typically between 80°C and 100°C with humidity of between 5% and 30%. A steam room operates at much lower temperature — usually between 40°C and 50°C — but at 100% relative humidity, filling the enclosure with dense warm vapour produced by a steam generator. The physiological experience of the two is noticeably different — the dry heat of a sauna feels more intense and challenging, while the moist heat of a steam room feels softer, more enveloping, and more immediately accessible, particularly for the respiratory system. Both modalities produce meaningful health benefits, but they do so through different mechanisms, and many wellness-focused homeowners choose to install both as complementary elements of a wider home wellness suite.

 

What are the health benefits of a home steam room?

 

Regular steam room use is associated with a broad range of health benefits that span the respiratory system, the cardiovascular system, the skin, and the musculoskeletal system. The warm, saturated air of a steam room is highly beneficial for the respiratory tract — it hydrates and soothes the mucosal membranes, reduces airway inflammation, and can provide meaningful relief for those with asthma, sinusitis, bronchitis, or hay fever. The moist heat also opens the skin's pores deeply and promotes thorough cleansing through sweating, which is associated with improved skin clarity, texture, and hydration. From a cardiovascular perspective, steam room heat raises the heart rate and dilates blood vessels in a manner comparable to moderate aerobic exercise, supporting circulation and cardiovascular function with regular use. The deeply relaxing nature of the steam environment additionally promotes parasympathetic nervous system activation — the physiological state associated with rest, recovery, and stress reduction — making it one of the most effective passive relaxation tools available for home installation.

​

How is a steam room built and why does construction quality matter so much?

​

A steam room is one of the most technically demanding residential wellness installations because it operates as a permanently wet, high-humidity enclosure that must contain moisture completely and prevent it from migrating into the surrounding building structure. The construction sequence begins with an insulated, rigid tile backing board — not standard plasterboard or cement board, which will eventually degrade under continuous wet heat exposure — over which a high-integrity vapour barrier membrane is applied to every surface including the ceiling. All joints, corners, and penetrations are sealed with a continuous waterproof membrane system before tiling begins. The adhesive and grout used must be rated for continuous wet heat exposure at temperatures up to 50°C — standard bathroom adhesives are not sufficient. The steam generator is sized for the exact sealed volume of the enclosure, as an undersized unit will fail to reach temperature and an oversized one will produce excessive pressure. Every element of the construction is interdependent, which is why steam rooms built by contractors without specific wet heat construction experience so frequently develop problems within the first few years of use.

 

How much does a bespoke steam room cost in London and Surrey?

 

Bespoke steam rooms at The Sauna Company start from £14,995 fully installed, which includes design, site survey, 3D visualisation, insulated backing board substrate, vapour barrier system, steam generator, digital control panel, tiled finish, bench construction in tiles or microcement, lighting, and chromotherapy integration where specified. The final price depends on the size of the enclosure, the tile specification — large-format porcelain, natural stone, and handmade tiles each carry different material and installation costs — the steam generator model and output, the bench configuration, and any additional features such as a rain shower head, body jets, aromatherapy oil dispensers, or an integrated sound system. Steam rooms built as part of a wider wellness suite alongside a sauna, cold plunge, or relaxation room are priced as a combined project following a single design consultation, and in these cases the overall project cost often benefits from the efficiency of a single installation programme.

​

How much space do I need for a home steam room, and can one be built in an existing bathroom?

 

A steam room can be built in a surprisingly compact footprint — the minimum practical internal dimension for a single-person steam room is approximately 90cm by 90cm, though most clients opt for a minimum of 120cm by 120cm to allow comfortable movement and a bench within the enclosure. Unlike a sauna, which requires a significant electrical supply for a high-output heater, a steam room generator can typically be installed in a cupboard or void adjacent to the enclosure and connected via a single steam inlet pipe, which makes the integration into an existing bathroom or wet room more straightforward than many clients anticipate. The key structural requirement is that the surrounding walls and floor can support the weight of the tiled construction and are accessible for the vapour barrier and substrate installation — which we assess during the site survey. Many of our steam room projects are built within or adjacent to an existing bathroom as part of a wider renovation, and we regularly work alongside bathroom designers, architects, and main contractors to integrate the steam room into a larger project programme.