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Garden room project · Timber Rooms

Bespoke garden sauna with outdoor shower

A garden sauna by the beach for owners who surf, 2m × 2m inside with room for four, and an outdoor shower behind a hinged slatted screen.


Published 24 April 2025 · Updated 31 October 2026 · 2 minute read · Written by The Garden Room & Annexe Guide

The exterior of the sauna has been clad in Thermo Ayous
Timber Rooms  garden sauna by the beach, 2m × 2m inside

Home saunas are having a moment-and for good reason. The wellness benefits of regular sauna use, from easing sore muscles to supporting relaxation and mental clarity, are well documented. More and more people are choosing to bring that sense of luxury and wellbeing into their own gardens, and working with a bespoke designer like Timber Rooms, who are based in West Sussex, is an excellent route to achieving a sauna space that truly suits your needs.

This recently completed sauna room project by Timber Rooms is a great example of their bespoke approach. Set by the beach, the building has been designed with both form and function in mind. The exterior is clad in Thermo Ayous, a durable, sustainable timber that offers a refined alternative to Western Red Cedar. The boards have been artfully laid in varying widths and directions, adding a subtle but eye-catching architectural quality to the design.

One of our favourite touches is the hinged slatted privacy screen, which can be opened or closed to provide discretion when using the outdoor shower. The screen sits under a canopy, giving a spa-like sense of seclusion. A row of handy robe hooks sits neatly next to the glazed entrance, reinforcing the thought that’s gone into every detail of the layout.

The hinged screen adds privacy in the outdoor shower area
The privacy screen  hinged slats beside the outdoor shower

The grey composite decking surrounding the building has been chosen for its durability in this high-moisture area. Its muted tone complements the soft hues of the Thermo Ayous cladding, tying everything together with a calm and contemporary feel.

As part of their turnkey service, Timber Rooms handled all plumbing and electrics for the building-so everything from the sauna stove to the outdoor shower was installed as part of one seamless package.

Timber Rooms handled the electrics and plumbing for the garden sauna
Grey composite decking  around the sauna

At a glance

  • Size: The sauna measures 2m × 2m inside, with bench seating for up to four people.
  • Outside: Thermo Ayous cladding laid in varying widths and directions, with grey composite decking chosen to cope with the wet around the building.
  • Outdoor shower: Under a canopy, behind a hinged slatted screen that opens or closes for privacy, with robe hooks beside the glazed entrance.
  • Inside: A traditional matchboard lining, Harvia stove, thermometer and sliding vent, with LED lighting and Bluetooth speakers set into the ceiling.
  • Company: Timber Rooms, based in West Sussex, who handled the plumbing and electrics for the stove and the shower as part of their turnkey service.

Part of our garden sauna guide →

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Inside

Traditional sauna, modern touches

Inside, the sauna measures 2m x 2m, creating a cosy but comfortable space for up to four people. The interior has been finished in a traditional style with matchboard cladding and bench seating. The full Finnish experience is present, with a Harvia stove, thermometer, sliding vent, and the classic wooden sauna ladle and water bowl, perfect for creating bursts of steam.

The sauna featured matchboard cladding and bench seating
Inside the sauna  matchboard lining and bench seating
A Harvia stove has been fitted in the garden sauna
The Harvia stove
A traditional wooden sauna ladle and water bowl
The ladle and water bowl  for bursts of steam

But tradition isn’t the only story here. Modern details have been discreetly integrated into the design, including low-energy LED lighting and Bluetooth speakers in the ceiling. These let users stream their favourite music or calming soundscapes directly from a phone while they unwind.

Inside, the sauna has a traditional vent and a modern touches like bluetooth speakers
The sliding vent  with speakers set into the ceiling

Whether you’re coming back from a surf session, like the owners of this particular sauna, or simply looking to relax after a long day, the combination of authentic sauna heat and a cool blast from the outdoor shower is hard to beat.

Planning something similar?

Learn more about Timber Rooms

To learn more about creating a sauna room in your garden, speak with the Timber Rooms team on 01273 839 491 or email hello@timberrooms.co.uk. You can also explore their work at www.timberrooms.co.uk.

Based in West Sussex, Timber Rooms work throughout East Sussex, West Sussex, Surrey, and South London, offering a truly bespoke garden room design service tailored to each customer.

Visit Timber Rooms More Timber Rooms projects
More projects like this Garden saunas Garden gyms Gyms with a shower room Under 10sqm garden rooms
Read the guides What garden rooms cost Permitted development Buying a garden gym

Published 24 April 2025 · Photographs courtesy of Timber Rooms.

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