KC ISLA Panoramic 70mm Garden Sauna — Terrace & Optional Outdoor Shower
Heat, Light and Recovery in One Connected Space
The KC ISLA Panoramic Garden Sauna combines a substantial timber sauna with an adjoining outdoor terrace, creating a natural transition between heat, fresh air and cold-water recovery.
Its panoramic glass frontage brings daylight into the sauna and opens the interior towards the surrounding garden, while dual Aspen benches create a calm heat environment for approximately 2–4 people.
Outside, the integrated terrace provides a dedicated place to cool down, add an outdoor shower or position a compatible compact cold-therapy system, subject to the final equipment and site requirements.
The result is more than a standalone sauna.
It is a connected garden wellness space designed around the complete ritual:
Heat → Step Outside → Cool Shower → Breathe → Recover
Panoramic by Design
The full-height glass frontage is central to the ISLA experience.
It allows natural light to move through the sauna and creates a stronger visual connection between the internal heat room and the garden beyond.
Rather than feeling enclosed, the room remains bright, open and architectural while preserving the warmth and material character of the Nordic Spruce structure.
An internal glass door separates the sauna from the adjoining terrace and creates a clear transition between the heated room and outdoor recovery space.
Perceived privacy will vary according to internal and external lighting conditions, so final positioning should account for neighbouring properties and surrounding sightlines.
A Terrace Built Into the Ritual
The adjoining terrace is included as part of the ISLA structure.
It creates a practical outdoor transition space that can be used for:
- Cooling down between sauna rounds
- Breathwork and quiet recovery
- Towel and robe storage during use
- An optional outdoor shower
- A compatible compact cold plunge
- A small recovery or seating area
The outdoor shower is not included as standard and is selected separately where required.
Shower installation will require an appropriate water supply, plumbing route and drainage strategy. These should be considered before the sauna position and base are finalised.
Where a cold plunge is added, its dimensions, filled weight, access, filtration and drainage requirements must also be reviewed as part of the wider project.
Built in 70mm Nordic Spruce
The ISLA is constructed from substantial 70mm Nordic Spruce walls, giving the structure a strong, traditional timber presence and supporting year-round outdoor use when correctly installed, protected and maintained.
Nordic Spruce provides:
- A pale, natural timber appearance
- Classic Scandinavian character
- A warm contrast against the panoramic glazing
- A suitable surface for clear or coloured exterior treatments
- A solid structural base for a larger garden sauna
As an outdoor timber structure, the ISLA requires appropriate exterior treatment and ongoing care.
The external finish can be tailored around the property through clear protection or selected architectural colour treatments where shown within the configurator.
Optional Insulated Roof Upgrade
An optional 100mm insulated roof-panel upgrade is available for customers wanting to enhance the roof build-up for regular year-round use.
The upgrade may be particularly relevant where:
- The sauna will be used frequently through winter
- The property is in a more exposed location
- Improved heat retention is a project priority
- The sauna is intended for holiday-let or higher-use environments
The final roof and heater specification should be considered together so the complete heat environment is matched to the intended use.
This Specification Includes
The core KC ISLA package includes:
- 70mm Nordic Spruce sauna structure
- Panoramic front glazing
- Internal glass sauna door
- Dual Aspen sauna benches
- Integrated outdoor terrace
- Adjustable internal ventilation
- Stainless-steel fixings
- Tempered safety glazing
- Flat-pack and partially pre-assembled components
- Access to KeiCo installation and project support
Selected separately through the product configurator:
- Electric or wood-fired sauna heater
- Heater controls and WiFi options where compatible
- Professional installation
- Base preparation where available
- Exterior timber treatment
- Interior timber protection
- 100mm insulated roof upgrade
- Ambient LED lighting
- Bluetooth audio and accessories
- Outdoor shower package
- Cold-plunge integration
- KeiCo Care or Signature Care
The exact package supplied is determined by the options selected at the time of ordering.
Configure Your ISLA
The displayed product price forms the starting point.
The OPTIS configurator then allows the ISLA to be completed around your preferred heat experience, appearance and level of project support.
1. Choose Your Heat
Select a compatible:
- Harvia electric heater
- HUUM electric heater
- Manual or external control system
- WiFi-enabled control package where compatible
- Wood-fired heater and flue package
- Supply-only option without a heater
The correct heater must be matched to the sauna volume, panoramic glazing, available electrical supply and intended frequency of use.
All electric sauna heaters require installation and connection by a qualified electrician.
Wood-fired systems require the correct stove, chimney, heat protection and safety clearances.
2. Choose Your Project Route
Select flat-pack delivery for assembly by your own competent team, or choose professional installation through KeiCo.
3. Prepare and Protect
Choose the appropriate:
- Base or foundation route
- Exterior timber treatment
- Internal timber protection
- Insulated roof upgrade
- Guttering or weather-management options where available
4. Complete the Ritual
Add the elements that shape everyday use:
- Outdoor shower
- Ambient sauna lighting
- Bluetooth audio
- Headrests and accessories
- Bucket and ladle
- Thermometer and timer
- Towel and aromatherapy options
- Cold plunge
- KeiCo Care or Signature Care
From Sauna Supply to a Finished KeiCo Wellness Space
The ISLA can be supplied as a premium flat-pack structure for assembly by your own experienced team.
It can also become the centre of a complete KeiCo project.
Depending on the agreed scope, our team can assist with:
- Sauna and heater specification
- Site positioning and layout
- Access and delivery planning
- Base preparation
- Professional sauna installation
- Electrical requirement coordination
- Water and drainage planning
- Exterior and interior timber treatment
- Roof and weather-management upgrades
- Shower and cold-plunge integration
- Lighting and accessory installation
- Servicing and longer-term aftercare
Where regulated or specialist works are required, they are completed or coordinated with suitably qualified trades.
One vision. One accountable team. One finished KeiCo wellness space.
Designed for Regular Use
The KC ISLA is particularly well suited to:
- Private garden wellness spaces
- Couples and small families
- Post-training heat and recovery routines
- Morning or evening sauna rituals
- Sauna-and-shower installations
- Sauna-and-cold-plunge pairings
- Holiday lets and boutique accommodation
- Customers wanting more than a standalone heat room
Its connected terrace creates a more complete user journey, giving the customer somewhere purposeful to move before and after each sauna session.
Regular sauna use is commonly associated with supporting relaxation, helping the body unwind after activity and creating space for a more consistent recovery routine.
Individual responses vary, and no particular wellness outcome is guaranteed.
Specifications
External dimensions: 3,010mm (W) × 1,940mm (D) × 2,420mm (H)
Capacity: approximately 2–4 people
Approximate weight: 950kg
Primary material: 70mm Nordic Spruce
Front elevation: panoramic tempered safety glass
Internal door: glass sauna door
Benches: dual Aspen benches
Terrace: included
Outdoor shower: optional
Roof insulation: optional 100mm insulated panel upgrade
Ventilation: adjustable internal ventilation
Heating: compatible electric or wood-fired packages
Heater: selected separately
Exterior treatment: selectable
Interior protection: selectable where available
Lighting and audio: optional
Delivery format: flat-pack and partially pre-assembled
Professional installation: available
Production: made to order
Typical lead time: approximately 10–12 weeks
Warranty: 2 years with the required timber treatment, subject to applicable terms
KeiCo Care: eligible
Delivery & Installation
Each KC ISLA is made to order around the selected heater, finish, roof and recovery configuration.
The structure is supplied flat-packed and partially pre-assembled for on-site installation.
Professional installation is available through the KeiCo team.
Typical site requirements include:
- A solid, level and load-bearing base
- Suitable access for palletised delivery
- Adequate working space for assembly
- Confirmed electrical supply for electric heat
- Correct chimney, flue and clearances for wood-fired heat
- Water supply for an optional outdoor shower
- Appropriate drainage for shower or cold-plunge use
- Suitable external timber protection
- Ongoing access for maintenance and servicing
Typical lead time is approximately 10–12 weeks, subject to final specification, production scheduling, delivery location and site readiness.
Base preparation, electrical connection, plumbing, drainage and surrounding landscape works are reviewed separately unless expressly included within the agreed quotation.
Warranty & Aftercare
The KC ISLA carries a 2-year warranty with the required timber treatment, subject to the applicable warranty and ongoing maintenance conditions.
The sauna is eligible for KeiCo Care, providing a structured route to servicing, ownership support and longer-term maintenance planning.
KeiCo Signature Care may also be available for customers wanting a more comprehensive level of ongoing protection and restoration support.
A Complete Heat-and-Recovery Environment
The KC ISLA has been designed for customers who want the sauna experience to continue beyond the heated room.
The panoramic glazing brings the garden into view.
The 70mm Spruce structure creates a substantial heat environment.
The terrace provides space to cool, shower and recover.
The configurable options allow the final installation to belong naturally within the property.
KeiCo can supply the structure — or help create the complete wellness environment around it.
Explore the Full KeiCo Outdoor Wellness Collection
View the full 2026 KeiCo Outdoor Wellness Catalogue →
📧 Interested in enhancing your home with the KC ISLA Sauna? Contact us at orders@thekeico.com and let's get your dream Sauna project underway!
FAQ's
Do I need planning permission for an outdoor sauna in the UK?
Many domestic garden saunas in England can be installed under permitted development rights because sauna cabins are treated as garden outbuildings. However, every relevant limit and condition must still be satisfied. Permission may be required depending on the sauna’s position, proximity to boundaries, total garden coverage, property type and whether the site is listed or located within designated land. Different rules may also apply in Scotland, Wales and Northern Ireland, or where the sauna is intended for commercial or holiday-let use. The optional shower, electrical supply and any wood-fired chimney should also be considered as part of the complete proposal. We recommend confirming the intended installation address with us prior to starting foundation, plumbing or electrical works.
What size sauna heater does a panoramic glass outdoor sauna need?
The correct heater must be calculated from the sauna’s effective heated-room volume, rather than from its external dimensions alone. Harvia’s general guidance allows approximately 1kW of heater output for every cubic metre of sauna volume. It also recommends increasing the calculation for glass and other non-insulated surfaces: every square metre of glass adds approximately the same heater demand as an additional 1.2m³ of room volume. Because the KC ISLA has substantial panoramic glazing, the glass allowance is particularly important. The final heater package should therefore be confirmed against: Internal heated-room dimensions Total glass area Roof-insulation specification Electric or wood-fired heat path Available electrical supply Intended frequency of use KeiCo can match the appropriate Harvia or HUUM package to the completed ISLA configuration.
Can I add an outdoor shower or cold plunge to the KC ISLA sauna terrace?
Yes. The adjoining ISLA terrace is designed to create a practical transition between the sauna, fresh air and cold-water recovery. An outdoor shower can be added subject to a suitable water supply, isolation, frost protection, compliant backflow protection and an agreed drainage route. UK water-fitting guidance requires showers to have appropriate protection against contamination of the drinking-water supply, with the final arrangement determined by the installation and local requirements. A compatible cold plunge may also be incorporated, but its: External dimensions Filled operating weight Access requirements Filtration or chiller connections Drainage and maintenance space must be reviewed before the base and layout are finalised. Wastewater must be managed so that it does not create pollution, flooding or nuisance. Shower, plumbing and drainage works are quoted separately unless expressly included within the agreed KeiCo project scope.
What base does the KC ISLA outdoor sauna need?
The KC ISLA requires a solid, level, well-drained and load-bearing base supporting the complete structure and terrace evenly. The sauna weighs approximately 950kg before the heater, users, accessories and any terrace-based recovery equipment are added. Suitable foundation routes may include: A correctly prepared concrete slab An engineered paving system over a compacted structural sub-base A suitable ground-screw foundation A reinforced deck or framed platform designed for the completed load An existing hardstanding confirmed as structurally suitable The base should not be laid directly onto grass, loose soil or an uneven surface. If a cold plunge is positioned on or beside the terrace, its full water-filled weight must be included within the structural assessment. Shower drainage, cable routes and future servicing access should also be planned before the foundation is installed. KeiCo can review the proposed site and provide a separate base-preparation quotation where required.
How much does an outdoor sauna cost to run in the UK?
The simplest way to estimate the running cost of an electric sauna is: Heater output in kW × operating time in hours × your electricity unit rate Using the current Great Britain average default-tariff electricity rate of approximately 26.11p per kWh for July to September 2026: An 8kW heater drawing full power for one hour would cost approximately £2.09 A 9kW heater drawing full power for one hour would cost approximately £2.35 These are full-power examples rather than guaranteed session costs. In normal operation, the heater may cycle on and off after the desired temperature is reached. Actual consumption will depend on: Selected heater output Outdoor temperature Warm-up time Panoramic glass area Roof-insulation choice Door opening Session duration Your individual electricity tariff The daily standing charge is not included because it would normally be payable regardless of sauna use.
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