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Leil® Celto S Outdoor Sauna Kit

Leil® Celto S Outdoor Sauna Kit

Leil® Saunas
Authorized Dealer
$5,980.00 - $6,860.00
$6,860.00
$5,980.00 - $6,860.00
$6,860.00
Professional installation available Request a Quote
Lighting: Backrest Lighting
Heater Stand (Compatible with KIP & DROP): Heater Stand Included

The Leil® Celto S Outdoor Sauna Kit is a compact 2-person sauna designed for smaller outdoor spaces. Generous bronze tempered glass surfaces create an open, light-filled interior, while substantial 2.4" (60mm) CLT panel construction and two-level Aspen seating provide a comfortable sauna experience within a space-efficient footprint.

Handcrafted in Estonia and designed for straightforward on-site assembly, the Celto S can be assembled in approximately 4–6 hours.

Note:

  • Heater package and LED lighting are sold separately. Electrical installation must be performed by a licensed electrician.
  • The exterior must be treated with a suitable exterior varnish containing UV protection.
  • The heater mounts directly to the heater stand rather than to the glass wall. The heater stand, specifically designed for the Celto series, is compatible with both Harvia KIP and HUUM DROP heaters. 

Features

  • Compact outdoor sauna designed for 2 people
  • 2.4-inch-thick CLT wall panels for better insulation
  • Natural spruce finish
  • Generous bronze tempered glass surfaces for an open, light-filled interior
  • Bronze tempered glass door with premium handle and black hinges
  • Two-level Aspen bench system
  • Wide single-board Aspen backrest
  • EPDM roof covering for outdoor weather protection
  • Four ventilation openings for sauna airflow
  • Impregnated brown base frame
  • Easy assembly in 4–6 hours
  • A purpose-built heater stand designed specifically for the Harvia KIP and HUUM DROP heaters (sold separately)
  • Optional LED lighting available separately
  • Handcrafted in Estonia

Specifications

Capacity
2 people
Exterior Dimensions
65"W × 56"D × 84"H
Interior Dimensions
59"W × 50"D
Wall Material
2.4" (60mm) CLT panels
Ceiling
2.4" (60mm) CLT panels
Floor
2.4" (60mm) CLT panels
Glass
Bronze tempered glass
Bench Material
Aspen
Bench Configuration
2-level bench
Roof
2.4" (60mm) CLT panels with EPDM roof cover
Ventilation
4 ventilation openings
Base Frame
Impregnated brown
Installation Location
Outdoor
Country of Manufacture
Estonia

Manuals & Resources

Installation Manual

Dimensions Drawing

Celto Catalogue

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Timeless Design

Timeless Design

Form follows function: clean lines, natural wood, and understated details create a calm visual language. Leil® Saunas looks beyond passing trends, bringing thoughtful design to a timeless sauna tradition. The result is a space that looks right today and feels just as inviting for years to come.

Outdoor Saunas

Outdoor Saunas

Your own retreat, closer to nature

Turn a quiet corner of your backyard into a place to slow down. Leil® outdoor saunas bring natural wood, thoughtful design, and the warmth of traditional sauna bathing to your outdoor living space.

Choose the clean architectural lines of Viva or the softly rounded silhouette of Black Cube. Each offers a distinctive setting for stepping away from the day, reconnecting with your surroundings, and making time for your own sauna ritual.

Shop Outdoor Saunas
Indoor Saunas

Indoor Saunas

A daily ritual, right at home

Make room for a daily pause, without stepping outside. Como indoor saunas from Leil® Saunas combine ThermoWood® walls, smooth aspen seating, and a clear glass door in a clean, contemporary design.

Whether planned for a bathroom, home gym, or dedicated wellness room, Como brings the sauna experience into the rhythm of home. A warm and inviting space to leave the day behind and enjoy a moment to yourself.

Shop Indoor Saunas

Frequently Asked Questions

Products

What type of wood do you use in manufacturing, and why is thermally treated wood good?

Leil® Saunas uses Lunawood ThermoWood® (thermally modified pine) for the sauna exterior, while benches are made from aspen and alder. Thermally treated wood is ideal for saunas as it’s resistant to water and humidity, doesn’t swell or shrink, won’t warp or twist like untreated wood, and doesn’t leak resin.

Are your products suitable for year-round use?

Yes, Leil® saunas can be used year-round, enduring cold winters and hot summers. We use 40mm or 70mm thick thermally treated wood, roofing with shingles or EPDM rubber to ensure moisture resistance. We also recommend applying an external UV-protective varnish treatment which ensures long-lasting durability.

Does the standard sauna kit include a heater?

A standard kit includes the sauna only. Optional LED lighting and a heater packages are available as add-ons.

Are your products certified and compliant with European standards?

Yes, all materials are certified and compliant with EU standards.

Are sauna components painted at the factory?

DIY (self-assembly) sauna components are partially factory-painted, requiring final finishing during installation. Fully assembled saunas are factory-painted and finished.

Assembly & Maintenance

Does the product come with an instruction manual, or can it be downloaded?

All products come with a physical instruction manual. Manuals can also be downloaded from our website.

On what surface can the sauna be installed?

The sauna must be installed on stable and level ground that doesn’t settle. This means the ground must be prepared, either with driven piles or a concrete foundation.

Can I assemble the sauna myself (instructions, fasteners, required tools)?

Yes, self-assembly is possible. However, we recommend using trained specialists who have the required knowledge and tools.

Why and how should I maintain the sauna?

We recommend treating the sauna annually with proper products: externally with a UV- and moisture-resistant varnish to maintain long-term durability, and benches with special sauna oil or wax.

How is drainage handled?

Leil® saunas have drainage systems with built-in floor drains. The floors are slightly inclined to direct water toward the drain.

How often should maintenance be performed?

At least annually, depending on frequency of use.

Does thermally treated wood require maintenance?

Yes, thermally treated wood also requires annual treatment.

How can I extend the lifespan of my sauna?

Regular annual maintenance, treating both the interior and exterior surfaces, significantly extends sauna lifespan.