Why Build a Sauna?
Commercial saunas cost $15,000–$40,000 installed. Barrel saunas are cramped, fixed in place, and limited to one layout. Traditional custom builds require contractors, permits, and 3–6 months of waiting. The Saunosphere is a modular sauna kit you build yourself from standard lumber — typically under $7,000 in materials.
What You Get
Everything you need to go from idea to finished structure
Construction Plans
Complete cut lists, assembly sequences, and connection details for every module in your chosen product.
Bill of Materials
Exact quantities and dimensions for every piece of lumber, fastener, and material you need to buy.
3D Configurator Access
Design your layout in our free 3D configurator. Experiment with module combinations before you cut a single board.
Builder Network
Connect with local lumber yards and builders. Share your design, get real quotes, find people who can help.
How It Works
Design
Configure your layout in the free 3D tool. Choose modules, materials, and placement.
Plan
Get your bill of materials, cut list, and assembly sequence. Order materials locally.
Build
Follow the step-by-step handbook. Standard tools, standard lumber, no special skills.
Why Saunosphere?
22 Interchangeable Panels
Walls, doors, windows, and vents snap together in any configuration. Reconfigure your sauna layout anytime.
Cedar-Ready Construction
Frame from standard 2×4s, line with cedar planks. Traditional sauna materials, modular construction method.
Fully Mobile
Trailer-mountable on a standard flatbed. Move to a new home, relocate in your yard, or sell it intact.
Technical Specifications
| Temperature Range | 70 - 100°C (158 - 212°F) |
| Heating Options | Wood-fired (15 - 20 kW) or electric |
| Insulation | Mineral wool, R-20, with vapor barrier |
| Interior Finish | Untreated softwood (spruce, pine, or aspen) |
| Rock Capacity | 20 - 30 kg (44 - 66 lbs) |
| Foundation | Trailer-mounted (towable, mobile) |
| Build Time | 40 - 60 hours (3 - 4 weekends) |
| Materials Budget | $4,000 - $7,000 (including stove and chimney) |
Engineering Views
Get the Complete Build System
Step-by-step handbook, cut lists, material specs, and assembly guides — plus lifetime updates and community access. From $29.
See Pricing & Editions30-day money-back guarantee · Open-source license included
Get Quotes from Local Builders
Design your configuration in our free online tool, then get material quotes from suppliers near you.
Design & Get QuotesBuilder Tools
Everything you need to build with precision — from templates to jigs.
MDF & Paper Templates
Precision CNC-cut MDF routing guides and full-scale paper patterns for accurate fabrication.
View Templates →3D-Printable Jigs
Download STL files for assembly jigs, alignment tools, and drilling guides. Print at home.
Drop-Ship Jig Kits
Professional-grade steel and aluminum jigs shipped directly to your door.
Frequently Asked Questions
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OPEN SOURCE HARDWARE
The Thiosphere™ SDK, the foundation to all our products, is open source hardware. In fact, all Thios products are. Specifically the CERN Open Hardware Licence Version 2 - Strongly Reciprocal.
That's a fancy way of saying that if you want to use our design, even for commercial purposes, you have to share your changes with everyone else.