Custom built-in sauna

Custom means we draw it first. A converted bathroom, an under-used storeroom, a gap between two buildings, a deck on a slope, or a hotel spa that needs to move twelve guests through an hour — none of those are catalogue problems, and pretending otherwise is how you end up with a sauna that technically fits and nobody enjoys.

The process is the same as everything else we do, just with more drawing at the front: survey, layout, heat-load calculation, fixed price. You see all of it before you commit to anything.

What custom actually solves

Usually one of four things. A room that already exists and needs converting — which is mostly a question of vapour barrier, insulation and getting the drainage right in a space that was never designed to be wet. A footprint no standard model fits, like a long narrow gap or a corner with a structural column in it. A view that demands a specific orientation and a specific wall of glass. Or a commercial capacity requirement, where the question is not "how big" but "how many people per hour".

For hotels and retreats specifically, the sizing conversation is different and the maintenance schedule is much more serious. There is a framework for the numbers in wellness zones for boutique hotels.

Converting an existing room

The most common custom job, and the one with the most hidden work. An existing masonry room is a heat sink and a moisture trap. It needs a full internal build-up: insulation, a continuous foil vapour barrier with sealed laps, a ventilated cavity, then the timber lining — and the vapour barrier is the part that people skip and then regret, because without it you are pumping 90 °C moist air into your wall structure for years.

Masonry also takes far longer to come up to temperature than a timber cabin and holds heat afterwards, which changes heater sizing and changes how the room behaves. That is fine. It just has to be designed for, not discovered.

Difficult sites

Cliff edges, slopes, tiny access roads, and islands. All of them are solvable and all of them need deciding early, because they constrain panel sizes and crate dimensions — everything reaches this island through Lembar or over the Padangbai ferry, and then down whatever road you actually have.

We have built on sites where the largest thing that could reach the plot was what two people could carry. That is a design input, not an obstacle, as long as we know at survey rather than on delivery day. Gili installations are covered under the Gili Islands.

Drawn before built

You get a layout, a section, a specification and a fixed price before any deposit. If the drawing is wrong, we change the drawing — that is what it is for, and it is far cheaper than changing the building. Supply upgrades, groundworks and freight are itemised as their own lines so you can see exactly what you are paying for and exactly what you could cut.

Then we build it, install it, commission it, and hand it over hot. Have a look at what we have built, or just send photographs of the space.