Carbon Smart Saunas by Finnish Sauna Builders

Transform your home into a professional-grade wellness retreat with the Carbon Smart™ Indoor Sauna Room Kit. Designed for both DIY enthusiasts and professional contractors, this complete package provides an authentic, high-performance sauna experience tailored to your existing space.

Premium Thermo Poplar Wood

Every Carbon Smart™ sauna is crafted exclusively from Thermo Poplar, a sustainably sourced wood that undergoes a specialized thermal modification process at approximately 374°F. This chemical-free treatment ensures exceptional dimensional stability and enhanced resistance to humidity and temperature fluctuations. The result is a naturally beautiful, long-lasting interior with a warm, rich tone that supports carbon-smart forestry practices.

Complete Kit - Ready for Your Space

Our indoor sauna kits arrive with all interior components precisely cut for a seamless fit. Simply provide the framing, insulation, electrical wiring, and exterior wall covering—we supply the premium materials needed to complete the interior sanctuary. Each kit supports customizable bench configurations to maximize comfort and optimize your specific floor plan.

What's Included in Your Carbon Smart™ Sauna Kit:

• Foil vapor barrier for critical moisture protection
• Ergonomic backrests designed for deep relaxation
• 1×4 tongue & groove boards for walls and ceiling (Thermo Poplar)
• Clear 1×4 bench boards with supports (20″ deep) in Thermo Poplar
• Corner moldings for a professional finish on walls, ceilings, and baseboards
• All-glass sauna door with wood handles and trim:
  • Frame: 27.2″ × 78.7″ (690 × 2000 mm)
  • Glass: 24.4″ × 77.3″ (620 × 1963 mm)
  • Rough opening required: 28″ × 80″
• Duckboard flooring for the walk area
• Upper and lower vent grills for optimal air circulation
• Traditional sauna accessories: Bucket with liner, ladle, thermometer, and headrest
• Marine-grade light: Wall-mount, vapor-proof sauna lighting
• Detailed installation instructions for efficient assembly

Important Installation & Support

For optimal safety and heat efficiency, a ceiling height of 8 feet is recommended. Whether you are outfitting a personal home spa or a commercial gym, our Carbon Smart™ specialists are available to provide personalized guidance throughout your build.