Thermory Saunas – Premium Thermally Modified Barrel Saunas for Lasting Luxury
Welcome to the world of Thermory Saunas, where European innovation meets timeless tradition. At Finnish Sauna Builders, we proudly offer the full range of Thermory barrel sauna kits – expertly engineered with thermally modified wood for long-term durability, low maintenance, and an unmatched aesthetic. Whether you're building a home wellness retreat or upgrading your outdoor space, Thermory delivers the very best in sauna design and performance.
What Makes Thermory Saunas Different?
Thermory is a world-renowned sauna brand, celebrated for its revolutionary use of thermally modified wood, a process that uses only heat and steam to enhance wood’s strength, stability, and weather resistance – no chemicals, ever. This sustainable, eco-friendly technology sets Thermory apart from traditional sauna builds.
Here’s why Thermory is a leading choice for sauna buyers:
✅ Thermally Modified Spruce or Pine – Naturally rot-resistant, stable, and low-maintenance
✅ Superior Weather Durability – Ideal for outdoor installation in all climates
✅ DIY-Friendly Kits – Pre-cut and pre-drilled for simple assembly
✅ Modern European Design – Minimalist, clean aesthetics with panoramic window options
✅ Multiple Sizes – From compact 2-person saunas to spacious 8-person barrel saunas
When you invest in Thermory, you’re getting a sauna that’s built to last decades, even in extreme conditions.
Explore the Thermory Sauna Collection
Our collection includes a wide variety of DIY barrel sauna kits by Thermory, available in multiple sizes, layouts, and configurations. Each model is crafted with thermally modified Nordic spruce, engineered for beauty and durability.
Thermory 2-Person Barrel Sauna – No. 55
Perfect for couples or compact spaces, this sauna includes ergonomic bench seating and sleek modern finishes.
-
Compact, space-saving footprint
-
Fast heat-up time with efficient insulation
-
Available with or without a panoramic window
Thermory 4-Person Barrel Sauna – No. 53 & No. 52 (With Window)
Designed for families or small gatherings, this size balances roominess with efficiency. The windowed option adds natural light and outdoor views.
-
Bench seating for four
-
Thermory’s signature thermowood throughout
-
Optional window panel for a more open feel
Thermory 6-Person Barrel Sauna – No. 50, 51, 62, 63
These mid-size barrel saunas are bestsellers, ideal for entertaining or relaxing with family. Choose models with terraces, porches, or windows to fit your lifestyle.
-
Plenty of room to stretch out
-
Panoramic window and porch add-ons available
-
Great value for larger families
Thermory 8-Person Barrel Sauna – No. 84 & No. 85
These extra-large barrel saunas are built for group gatherings or commercial use. Designed with ample interior space, stylish features, and long-term performance in mind.
-
Luxurious group sauna experience
-
Enhanced ventilation and heat retention
-
Impressive durability even in heavy use
What Is Thermally Modified Wood?
Thermory’s thermally modified wood is kiln-heated to over 400°F in a controlled, oxygen-free environment, altering the wood’s structure on a molecular level. This enhances:
-
Dimensional Stability: Won’t warp, twist, or cup
-
Durability: Resistant to rot, decay, insects, and moisture
-
Sustainability: No chemicals or preservatives used
-
Beauty: Rich, deep tones with natural grain enhanced
It’s a smart, eco-conscious choice for your outdoor sauna that delivers a lifetime of benefits.
DIY Sauna Kits – Built for Easy Installation
Thermory sauna kits are designed to make installation simple—even if you’re not a pro. With pre-cut, pre-drilled parts, detailed instructions, and premium materials, most DIYers can assemble their sauna in a weekend.
-
No special tools needed
-
Modular construction for fast assembly
-
Professional installation services available
Need help? We offer full support with guides and consultation, and you can explore Barrel Sauna Installation Services through Finnish Sauna Builders.
Compatible With Leading Sauna Heaters
Choose from a curated selection of compatible electric or wood-burning sauna heaters from top brands like:
-
Harvia – Reliable, efficient, and sleek Finnish design
-
HUUM – Scandinavian styling with smart tech
-
Scandia – Built for power and longevity
Use our Heater Sizing Tool to find the perfect match for your sauna size and power requirements.
Customize Your Thermory Sauna Experience
Make your sauna truly yours by adding premium features and accessories:
-
Sauna Lighting – LED strips, vapor-lock lights, and ambiance kits
-
Sauna Aroma & Oils – Essential oils for aromatherapy
-
Benches & Backrests – Ergonomic comfort upgrades
-
Outdoor Showers – Rinse before and after your session
Why Buy Thermory Saunas from Finnish Sauna Builders?
At Finnish Sauna Builders, we’re more than just a store—we’re sauna specialists. Here’s why customers trust us with their wellness investments:
Authorized Thermory Retailer – Get official warranty, support, and best pricing
Expert Support – From choosing a model to post-installation care
Free Shipping on Select Saunas – Save more with bundled offers
Flexible Financing – 0% options available through ShopPay
Order Your Thermory Sauna Today
Transform your backyard into a private wellness escape with a Thermory Sauna DIY kit from Finnish Sauna Builders. Whether you want a solo retreat or a family-size spa experience, there’s a Thermory model built for you.
Take the Sauna Quiz to find your perfect fit
Need help? Book a Free Sauna Consultation
Invest in quality. Choose Thermory.
Get started today and discover why Thermory is one of the most trusted names in modern barrel saunas—backed by sustainable design, time-tested durability, and the team at Finnish Sauna Builders.
