Symmetry Custom Sauna Catalog - Iron House Design

It starts with Symmetry

Premium sauna for modern living

At Symmetry, we design and build premium residential and commercial saunas for homeowners, builders, and developers who view wellness as an essential part of modern living. Whether you’re elevating a single-family home or adding amenities to a multi-unit development, our saunas are crafted to bring daily restoration through thoughtful design and lasting performance.

We also partner with select commercial spaces—boutique gyms, spas, and wellness studios—seeking the same level of craftsmanship and detail.

With architectural detailing and performance-grade materials, each sauna is engineered for exceptional heat, durability, and year-round reliability. From planning to installation, we make it seamless to integrate world-class sauna design into any project.

We are Symmetry. Your premier sauna partner.

Design-driven. Wellness-minded.

About us

We are a design–build firm focused on the creation of world-class saunas. We’re a team of builders, designers, and wellness-minded people who believe in doing things the right way—with craft, care, and intention.

Our story began with a sauna studio in Coeur d’Alene, Idaho. As it grew into multiple studios, it evolved into a dedicated design–build practice serving homes, hospitality, and wellness spaces—bringing mindful heat, cold, and restoration to more people in more places.

What started as a simple sauna habit became an obsession with the details: materials, airflow, heat retention, layout, and how people actually use the space.

From our home base in North Idaho, we now work with clients across the U.S. and the U.K. To solve one of the biggest challenges—high design, reliable installation and delivering premium saunas—we’re building a network of regional and traveling install teams to support every project.

Our custom sauna design

Residential & Commercial

Thermo aspen, custom commercial benching, dual Laava heaters

How to build a custom sauna with Symmetry

Lumber

How to choose your sauna wood: Follow your heart— or your nose. If you’re drawn to the classic sauna aroma, it’s hard to beat clear cedar. For most people, it comes down to tone: light, medium, dark, or black. We use only the highest-quality sauna materials, so you can feel confident in whatever you choose.

Looking for something specific? Bring us your inspiration images. Our designers can help create a sauna solution to suit almost any aesthetic.

Benching

Benching defines how your sauna feels, how it functions, and how you use it.

From classic wall-to-wall layouts to sculptural, freestanding designs, each bench style is engineered for comfort, airflow, and longevity in high-heat environments.

All benches are custom-built to suit your sauna’s size, heater placement, and desired posture—whether that’s upright social seating, relaxed lounging, or full recline. Materials, profiles, and spacing are carefully considered to balance ergonomics, heat circulation, and visual rhythm.

01.

Style: wall to wall, with matching upper and lower benches. Available with uniform or varying top board widths.

A revolutionary sauna system developed in Finland. Floating benches & backrests. Custom available only from Symmetry.

04.

bench

Employed when there’s no wall to attach to, resulting in a visually continuous, refined freestanding bench

Supported by hidden metal brackets mounted to wall framing, giving the benches a light, floating presence.

Thermo aspen is standard. Designed with a rhythmic, linear layout.

A vertical screen beneath the top bench, or both benches. Often used to conceal bench supports in larger builds. When paired with under-bench LED lighting, it helps brighten the sauna by providing a reflective surface.

Instead of a foot bench, all or most of the area at foot bench height is covered with a solid wood walking surface. A cutout is created for the heater to sit directly on the floor.

09. Wave bench

Takes serenity to the next level with smooth curves and integrated lumbar support, designed for luxury, comfort, and ultimate relaxation.

Sits flat to accommodate multiple people, then raises for a relaxed, adjustable lounge posture for one person.

Bring us your inspiration, our craftsman can build almost anything you can design.

Lighting & Accent Walls

Lighting plays a critical role in shaping the sauna experience. Beyond visibility, it defines mood, depth, and atmosphere— transforming the space from purely functional to deeply restorative.

Our lighting systems are designed specifically for sauna environments, balancing durability, heat tolerance, and visual softness. From subtle, concealed white light to immersive color and architectural features, lighting can be tailored to feel calm and minimal or expressive and dramatic.

Custom accent walls add depth, texture, and character to the sauna interior. Using stone, tile, wood, or natural materials, these features create a refined focal point—often enhanced by integrated lighting to shape mood and highlight materiality.

A classic sauna wall light that provides warm, ambient illumination. Often used near entrances or as a complementary accent light to enhance atmosphere. 01. Sconce

Color

White-only LED. Installed at the top of the backrest and under the top bench to provide clean, functional illumination.

White-only LED. Installed at the top and bottom of the backrest, and under both the top and bottom benches, creating a more layered and immersive lighting e ect.

Fiber optic lights designed for the high-heat sauna temperatures. Heater spotlight and additional options available.

A classic Himalayan Salt Sauna Wall Light that provides warm, ambient illuminationillumination, while ionizing the air in your sauna.

Stone and tile accent walls add texture and contrast, creating a refined architectural focal point

and

Doors & Windows

We offer standard glass sauna doors. Outside of those, the options are nearly infinite. Doors and windows shape the relationship between your sauna and its surroundings. Whether your goal is privacy, openness, or a strong architectural statement, glazing options can dramatically affect light, views, and spatial connection.

We offer standard glass sauna doors, along with fully custom door and window solutions. From framed ADA-compliant entries to expansive glass fronts and corner glazing, each option is selected to balance thermal performance with visual impact.

A clean, modern glass door that allows light to pass through while maintaining a simple, timeless look.

A

Doors designed to meet ADA requirements, o ering accessibility, durability, and architectural finish.

Glass

Heaters

We offer the biggest sauna heater manufacturers in the U.S. Symmetry also sources any heater on the market.

These are our favorite brands.

Note: We don’t list every option from each brand. For exact sizing, pricing, and availability, ask your designer for recommendations.

Heater guards

Heater guards are not required, but in many cases they’re a good idea.

Most often, heater guards are custom-built and designed to complement the benches and overall sauna design.

01. Wall mounted

A heater guard mounted directly to the wall, o ering protection while maintaining a clean, integrated look. Common in compact layouts or when the heater is positioned near seating.

02. Heater manufacturer designed

Heater guards designed and supplied by the heater manufacturer. These guards are engineered to pair seamlessly with the heater, providing a straightforward & reliable solution.

03. Floor standing

A freestanding heater guard typically used for larger, floor-mounted heaters. Ideal for extra-large heaters or open layouts where wall mounting isn’t possible.

Sauna floors & Duck boards

A waterproof, heat-tolerant floor is required inside your sauna. Concrete or tile are the recommended flooring options.

Do I need a drain in the floor?

A drain is not required in most situations. If you have Finnish ancestry and use a lot of löyly (steam from throwing water on the rocks), a floor drain can be a good idea.

In commercial saunas—especially those adjacent to pools, or those that are mopped frequently—a floor drain is strongly recommended.

In saunas that expect a lot of water on the floor, be sure to add integrated tile baseboard around the perimeter to prevent water from migrating into the walls.

“Duck board” floors

In saunas with floor-mounted heaters, the floor can become uncomfortably hot —especially during high-heat sessions—while also becoming wet and slippery. For this reason, duck boards were developed.

Duck boards are removable wooden floor covers, typically placed only in the walking areas of the sauna. They are most often made from the same lumber as the benches to maintain visual continuity. Duck board floors are gapped to promote airflow and drying, and include small rubber feet to keep the wood elevated o the floor and out of standing water.

They are more comfortable to walk on, but will require regular cleaning depending on use and how often the surrounding floors are wiped down.

What if I have hardwood floors?

Hardwood flooring is not suitable inside a sauna. For permanent installations, hardwood flooring in the sauna area should be removed and replaced with tile or concrete.

If placing a pre-built sauna on top of existing hardwood flooring, one option is to build a small tiled platform for the sauna to sit on.

Faster, easier, economical

Symmetry Pre-built saunas

For projects that need to move quickly and work within a tighter budget, Symmetry offers pre-built saunas designed for fast installation, flexible placement, and premium quality without compromise.

Our pre-built saunas are beautifully crafted, easy to install, and designed to bring wellness—fast. Whether you’re creating a residential sanctuary or outfitting a spa, studio, development, or fitness center, our pre-built models offer quick installation with flexible sizes and lumber options for indoor or outdoor spaces.

Crafted with premium materials and contemporary design, each model is engineered for comfort, durability, and daily use. With modular flexibility and scalable production, Symmetry pre-built saunas are ideal for projects of all sizes.

Let’s get started

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