Redwood Outdoors
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Minimalist looks but big on size the Summit Outdoor Sauna is a spacious addition to any outdoor relaxation retreat. The two large windows in the front of the sauna flood the space with serene natural light while you stay warm in your sauna sanctuary. Sit back and indulge in a luxurious wellness oasis in your own backyard.
Indulge in a refined take on Scandinavian design with the Summit Outdoor Sauna – a spacious, beautifully crafted unit built for comfort, performance, and style. Made from sustainably sourced hemlock and treated with our heat treatment process to enhance durability, ensuring lasting beauty in all climates. Each Summit is built to elevate your wellness routine, with a spacious interior offering extra headroom and room for 6 people to comfortably experience luxurious heat therapy. With its clean, minimalist lines, this sauna invites relaxation and transforms your backyard into a serene retreat.
Built to Last & FSC® Certified
The Forest Stewardship Council® (FSC®) sets the global benchmark for responsible forest management. When you see the FSC® certification on our products, it means the wood was sourced from forests that are managed to the highest environmental and social standards—protecting biodiversity, respecting the rights of Indigenous communities, and ensuring long-term forest health.
Choosing FSC®-certified products is one way we’re helping customers invest in both wellness and sustainability.
Enjoy the authentic heat of a traditional sauna in under an hour. Whether you prefer dry heat or steam, the Summit delivers a versatile sauna experience that promotes relaxation, improves circulation, and supports muscle recovery—making it easy to unwind whenever you need it.
A daily sauna session can help:
✔️ Boost circulation and cardiovascular health
✔️ Soothe sore muscles and enhance recovery
✔️ Reduce stress and improve sleep
✔️ Detoxify through deep, purifying sweat
What’s Included:
Product Diagram
Specifications
| Seating Capacity |
6 people depending on the seating arrangement as well as the size and proximity of the bathers |
| Wood Type |
Canadian Thermowood |
| Exterior Dimensions |
69.5” L x 82” W x 82.75” H |
| Weight |
1,100 lbs |
| Accessories Included |
|
| Door |
Tempered glass door included |
| Porch |
Front step sold separately |
| Number of Cradles |
2 |
| Electrical Requirements |
120V for lighting and 240V for heater |
| Light Fixture Dimensions |
9" L x 9 ¼ W x 7" H |
Packaging & Shipping Information
| Shipping Format | Wooden crate |
| Shipping Dimensions | 86 ½” L x 45 ¼” W x 33 ½” H |
A traditional Finnish wall-mounted heater with dual manual controls, including a delay timer that can be set up to 8 hours in advance. Its split-face stones deliver gentle, classic bursts of steam.
Wattage: 6kW & 8kW
Voltage: 240V
Amps: 30A (6kW) & 40A (8kW)
Wi-Fi: Optional upgrade with the 8kW
Mounting Type: Wall mounted
Rock Capacity: 44 lbs.
A sleek, modern heater with a curved design and Wi-Fi control. Its open-stone design holds a generous volume of stones, delivering soft, even heat and rich steam.
Wattage: 6kW & 8kW
Voltage: 240V
Amps: 30A (6kW) & 40A (8kW)
Wi-Fi: Standard
Mounting Type: Wall mounted
Rock Capacity: 99 lbs.
Made of Hemlock
Hemlock is an exceptional material for building saunas; highly regarded for being strong, durable, and moisture resistant. In hot environments, hemlock remains cooler to the touch and retains heat more effectively than cedar. All the hemlock used in our saunas is sourced from responsibly managed forests in Canada that adhere to strict environmental and social standards.
Heat-Treated for Exceptional Durability
Our hemlock undergoes a specialized thermal modification process to increase durability. This three-phase process begins with kiln-drying the wood, followed by heating it to temperatures above 400°F (204°C), finished by slowly cooling through a controlled steaming process. This procedure changes the wood on a cellular level, compressing its internal channels to create a denser structure. The result is a stronger material that is better protected against damage from environmental factors such as weather and insects. The natural moisture resistance of hemlock is also enhanced, minimizing swelling and warping over time.
Heat-treated hemlock lasts longer with minimal maintenance needs, so you can enjoy your sauna for many years to come.
All Natural, Built to Last
Our thermal modification process relies solely on heat and water—no chemicals involved. This technique increases the lifespan of your wood naturally, without the use of any additives.
Exterior Sauna Maintenance
Heat-treated hemlock is highly durable; no stain or sealer is required to maintain your sauna’s structural integrity. Left untreated, the wood will naturally weather to a rustic grey over time due to sun exposure, without losing its strength.
A water-based stain can be used to maintain or change your sauna’s exterior color. Note: stains should never be used inside the sauna.
Interior Sauna Maintenance
Our heat-treated hemlock is built to withstand the hot and humid sauna environment; no sealers are required on the interior walls. In high-traffic areas such as benches and floors, applying a protective treatment is recommended to guard against dirt, sweat, and body oils.
Recommended interior treatment options include:
Sauna Heater Maintenance
Sauna heaters require little maintenance. Simply cleaning the heater and taking care of the rocks will keep your heater running in peak condition for years to come.
To maintain your heater, follow these easy steps:
Redwood Outdoors saunas and cold plunge tubs are shipped using freight delivery to ensure safe, secure transport from our warehouse to your home. Below is everything you need to know about shipping and what to expect on your delivery day.
How Redwood Outdoors Products are Shipped
Our saunas and cold plunge tubs are shipped in durable wooden crates designed to protect the product during transit.
We partner with multiple trusted freight carriers to ensure your order arrives safely and efficiently at your curbside.
If you’ve ordered multiple large products—such as a sauna and a cold plunge—they may arrive in separate shipments.
Freight Delivery
Our shipments are delivered by a large freight truck, typically equipped with a liftgate. This allows the carrier to lower the crate to ground level upon arrival.
Delivery Day
Your shipment is on the way, here's how to prepare.
Once your order arrives at the carrier’s local depot, they will contact you to schedule a delivery appointment.
All freight shipments are curbside delivery, meaning the crate is placed at the end of your driveway or nearest accessible location.
Questions? We Have Answers.
At Redwood Outdoors, when you call, a real person is here to help. Our US-based, knowledgeable support specialists are ready to answer any question, big or small. Whether you need advice about how to set up your new sauna or how to care for your sauna after it is built, our team of experts has the answers.
Warranty
Our wooden saunas are backed by a 1-year limited warranty. For Harvia sauna heaters, we offer a 1-year warranty on heating elements and a 5-year limited warranty on other components for residential use. For Homecraft sauna heaters, we offer a 2-year limited warranty for residential use.
Easy DIY Sauna Installation
Designed for Hassle Free Assembly
Our saunas are built for easy DIY installation, with no cutting, modifications, or special skills required. Each kit includes pre cut, interlocking panels that fit together precisely, allowing you to assemble your sauna in just a few hours using basic construction skills.
Every sauna ships with a printed assembly manual inside the crate, tailored specifically to your model. If you’d like to preview the process ahead of time, digital assembly manuals and assembly videos are available online here.
Because our sauna designs continue to evolve, always follow the printed instructions included with your sauna during installation.
Review Instructions and Gather Supplies
Before starting your sauna build, carefully read through your assembly manual and gather all necessary supplies.
Recommended Tools
Sauna assembly requires common household tools, including:
Choose the Right Location
Select a stable, level location with sufficient clearance for assembly and access. Be sure the area allows for proper drainage and is within reach of your electrical connection. Thoughtful site selection helps ensure safe operation and long term durability.
Check Local Building Requirements
Depending on your location, a building permit or HOA approval may be required. Always check local regulations before starting installation.
Hire an Electrician
A trusted licensed electrician must be hired to install your sauna heater. Sauna heaters do not plug into standard outlets and must be hardwired to your electrical panel.
Build a Solid Foundation
A solid, level base is essential for the longevity and performance of your sauna.
Recommended foundation types include:
The foundation must support the full weight of the sauna and all occupants.
Preparing for an Efficient Install
Before assembling:
Putting the Sauna Together Piece by Piece
The following is a general overview of the sauna building process. Our sauna designs are always evolving, so please refer to your sauna assembly manual when you are ready to build.
Our saunas and cold plunges bring spa-like luxury to your backyard.
Outdoor Shower
Upgrade your backyard with a premium thermowood outdoor shower, expertly designed to enhance your sauna experience.
| Wood Type |
Canadian Thermowood (to match your sauna!) |
| Exterior Dimensions |
35 ½” L x 35 ½” W x 88” H |
| Weight |
37 lbs |
| Shower Heads |
|
| Hose Connection | 3/4" garden hose thread (GHT), fits most standard garden hoses |
Sauna Starter Kit
Elevate your sauna experience with our Sauna Starter Kit—the perfect companion for relaxation and rejuvenation. This thoughtfully curated set includes a classic wooden bucket and ladle for pouring steam, a thermometer/hygrometer to monitor heat and humidity, and a sand timer to help you track your session. Everything you need for a more authentic, soothing sauna ritual—all in one convenient kit.
Your Purchase of a Sauna Starter Kit Includes:
Black 5" Dial Thermometer/Hygrometer
Monitor the temperature and humidity levels of your sauna easily with the combination Thermometer and Hygrometer. This black 5-inch dial with white lettering is easy to read with temperature being marked on the top half of the dial and humidity on the lower half. Easy to install, works great in any size sauna, great in smaller saunas. Get the greatest benefits from heat therapy and make the ideal setting for your relaxation ritual.
Key Features:
Minimalist Bucket & Ladle
Elevate your sauna experience with the refined Minimalist Bucket and Ladle, available in bronze or bold black. Designed with clean lines and a timeless aesthetic, this set blends style and functionality with ease.
Key Features:
Sauna Back Rest
Enhance your sauna experience with the Sauna Back Rest, thoughtfully designed to provide ultimate support and comfort as you unwind.
Compatible with all sauna types, it lets you relax, lean back, and fully enjoy the soothing heat. Whether you're lying back for deep relaxation or sitting comfortably during your session, it’s the ideal accessory to elevate your sauna time.
Luxury Merino Wool Sauna Hat - Green
An accessory steeped in tradition, commonly used by sauna goers in Finland and across the world for centuries. A sauna hat is an essential tool in any sauna ritual allowing your body to regulate its temperature in the hot and humid environment of a sauna. Made from luxurious merino wool, commonly used in high performance sport apparel and highly regarded for its natural moisture wicking, stain resistance and cooling properties. Extend your sauna stays and get the most out of each heat therapy session.
