Published on September 14, 2026

A new sauna series is joining the Leil® family. Meet Celto, our newly designed outdoor sauna series created around a simple idea: a well-built sauna should be easier to own, easier to assemble and still deliver the warmth and comfort you expect from a proper sauna.

The Celto series comes in two sizes, Celto S and Celto M, combining an accessible price point with simple assembly and solid insulation.

Built differently. Assembled simply.

One of Celto’s biggest advantages is its construction. Instead of a more complex building process, the sauna is made from large prefabricated CLT panels, allowing two people to assemble the sauna in approximately 4–6 hours.

CLT, or cross-laminated timber, is an engineered wood material made by bonding timber layers together in alternating directions. This cross-layered structure gives the panels excellent dimensional stability, strength and rigidity.

In Celto, we use 60 mm Nordic spruce CLT panels for the structure. The substantial solid-timber construction provides good insulation while keeping the overall design and assembly remarkably straightforward. At the same time, the exposed timber gives Celto a natural look and makes the material itself an important part of the design.

More sauna, less complication.

Celto was designed to make owning a Leil® sauna possible for an even wider range of sauna lovers. A simpler construction and efficient production allow us to offer the series at a more accessible price point, without overcomplicating the product itself.

Celto S and Celto M are coming to our website very soon, where you’ll be able to explore both models in detail, compare options and materials, and configure your Celto just the way you want it.