Designing and Building Your Sauna

With a Finnleo® custom built sauna, the only limit is your imagination! Bring your room dimensions and let one of our  Wellness Consultants help you design your own unique, dream sauna for your home spa or gym, Custom saunas are also perfect for new construction or remodeling, including residences, hotels, corporate fitness centers, health clubs, or apartment buildings, or for unique room shapes or sizes.

The options are unlimited — innovative use of glass windows and doors, unusual angles, unique bench configurations.

With a Finnleo Permanently-Installed Sauna, you can achieve them all. Your design, in partnership with Finnleo experience and quality, assures unmatched form and function. If you can design it, we can build it.

We’ll pre-cut the finest materials for your walls and ceiling, we’ll pre-build the benches and door — all for final installation on your framed walls. Simply provide the inside dimensions, the door location and your preference for bench configuration — we’ll do the rest. Need design assistance to overcome potential challenges? Contact us—we’ll be happy to provide recommendations, and we can even have C.A.D. drawings made to show you what your new custom-built sauna will look like and assist with construction.

Custom Sauna Interior Solutions

Custom Interior - Standard

Custom Interior – Standard

Finnleo’s standard interior sets the “standard” for the industry.

  • Nordic White Spruce T&G walls & ceiling wood
  • Abachi 2-Bar backrests, benches, heater guards and duckboards (for the walk area)
  • Full frame 2×4 construction with 1×4 Abachi tops and face.
  • Bullnose front (for short direction tops) or standard front (for long direction tops) included.
  • Benches are assembled from the bottom using hidden stainless steel screws
  • Pre-hung all-glass bronze tinted door
  • Low voltage LED in-backrest lighting
  • Bucket & ladle

Custom Interior – Deco

Fixed Upper Benches

The Deco Interior has become Finnleo’s most popular custom bench upgrade—due to the immense flexibility in bench layout while still incorporating the popular platform/middle bench.

  • Benches and backrests can be chosen from any of those shown.
  • Benches are mounted to sturdy wall-supports.
  • Wall-to-wall middle platform.
Custom Interior - Centurion

Custom Interior – Centurion

The Centurion incorporates special design to blend the best of old, traditional features with modern design. The Nordic design includes Finnleo’s exclusive black Taika sauna wall paneling in contrast to wide-board clear Canadian Hemlock benches and backrests.

Centurion features include:

  • Black Taika sauna wall paneling on wall surfaces
  • Luxury benches, backrests and ceiling of clear wide-board Canadian Hemlock
  • Low voltage LED in-backrest lighting
  • Contemporary glass-to-glass corner
  • Full platform middle bench
  • Himalaya heater with “through bench” design

SaunaLogic2 control with worldwide mobile app

Custom Interior - Twilight/Vita

Custom Interior – Twilight/Vita

The Twilight / Vita interior includes elegant design features. With contemporary glass-to-glass corner, luxury backrests, recessed LED Lighting, and accented wood features inside and out, the Twilight is a beautiful addition to any home.

The Twilight / Vita interior includes elegant design features:

  • Contemporary glass-to-glass corner creates an amazingly open feel
  • Luxury backrests
  • Recessed LED lighting
  • Two-tone combination of Western Red Cedar with Abachi and heat-treated Alder accents to create a luxurious look and feel

All Finnleo Permanently-Installed Saunas include:

  • Manufactured in the USA by Finnleo
  • Interior walls and ceiling, cut-to-length tongue and groove, Nordic White Spruce (or other woods of your choice)
  • All interior trim
  • A genuine Finnleo heater, rocks and heater guard
  • Pre Assembled benches, headrests and backrests. Widest standard bench widths in the industry (24” wide for sauna depths 5’ or more)
  • Prehung All-Glass door (or other door options; choose from six door options)
  • Room light, duckboard flooring, thermometer, and foil vapor barrier
  • Sauna bucket, ladle and all hardware
  • Choose from several interior options, and three wood options: Nordic Whitewoods and Abachi—the trademark of Finnleo Saunas, or clear Western Red Cedar, Canadian Hemlock with Abachi or Taika.

Door Options include:

  • All glass door (standard), 24”x 72”, 24”x 80”, 30”x 80” & 36”x 80”
  • Douglas Fir door 24”x 72”, 231 /4”x 691 /4”, 24” x 80”, 30” x 80” & 36” x 80” with insulated glass window (Note: 80” height is for Custom Cut saunas only; not for modular)
  • Etched glass door, 24”x 72”
  • All doors are prehung and include handles and appropriate latching system
  • For all doors consult dealer or Finnleo for suggested rough opening.

Wood Types

Clear Western Red Cedar

Clear Western Red Cedar

Canadian Hemlock

Canadian Hemlock

Nordic White Spruce

Nordic White Spruce



Backrest Designs

2-Bar (Standard)

2-Bar (Standard)
Available in Hemlock, Cedar or Abachi (or Aspen)

2-Bar Wide

2-Bar Wide
Available in Hemlock only


Available in Hemlock, Cedar or Abachi (or Aspen)

3-Bar Wide

3-Bar Wide
Available in Hemlock only

3-Bar Wide Heat-Treated

3-Bar Wide
Available in Hemlock with heat-treated center wood only

5-Bar Heat-Treated

Available in Abachi (or Aspen) with heat-treated center wood only

6-Bar Curved

6-Bar Curved
Available in Hemlock, Cedar or Abachi (or Aspen)

6-Bar Curved Heat-Treated

6-Bar Curved
Available in Hemlock, Cedar or Abachi (or Aspen) with heat-treated top & bottom wood

Permanently-Installed Sauna CAD Drawings

Below are examples of the Finnleo Permanently-Installed sauna series. Dimensions shown are approximate I.D. of sauna room. Allow 2 ft. of bench per person. Unlimited custom shapes and sizes available for custom-cut saunas.

custom cut 4x4


custom cut 4x6


custom cut 5x7


custom cut 6x6


custom cut 6x8


custom cut 7x7


custom cut 8x8


custom cut 8x12


custom cut 10x10


custom cut 12x12


Interior and Exterior Solutions

One size definitely does not fit all at Mainely Tubs. We know your sauna is a personal retreat, and that the pure sauna experience is shaped in large part by the comfort and decor details you choose. That’s why we offer a wide range of high quality options that let you design the perfect sauna for you.

The Only Limit is Your Imagination

Choose from deluxe interior and exterior upgrades such as all-glass front saunas, Deco interior systems, deluxe interiors, exclusive European sauna wood species, luxurious contrasting wood colors, curved glass doors and windows, sound systems, user-friendly digital controls, heater designs….

These are just some of your options. These and others shown throughout our website are available for most Finnleo traditional saunas. And thanks to our custom manufacturing capabilities, no idea you have is too big or too small to explore—simply contact us and we’ll be happy to help make your dream sauna come true.

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