Finnish Sauna Builders Indoor Sauna Kit - 5 × 8 × 8 ft

The Finnish Sauna Builders Custom Indoor sauna room kit supplies pre-cut interior components for a 5 × 8 × 8-foot room. Wood and bench-layout choices let you tailor the interior to your space.

Why This Product Stands Out

• Pre-cut interior boards and matching trim.
• Three wood options.
• Configurable 20-inch-deep benches.
• All-glass door and sauna accessories.

Who This Is For

For homeowners or contractors fitting out an indoor sauna room, with framing, insulation, electrical wiring and exterior wall covering supplied separately.

Key Features

• Interior components: Includes foil vapor barrier, 1 × 4 tongue-and-groove wall and ceiling boards, clear bench boards with supports, backrests, matching corner moldings and duckboard flooring.
• Bench layouts: Choose a configuration with 20-inch-deep benches.
• Door and ventilation: An all-glass door with wood handles and trim pairs with upper and lower vent grills.
• Accessories: Includes a bucket with liner and ladle, thermometer, headrest, marine-grade wall-mounted vapor-proof light and installation instructions.
• Wood options: Grade A knot-free Western red cedar naturally resists moisture and decay; Thermo Aspen/Alder is treated at 419°F or higher; Thermo Poplar is treated at approximately 374°F. Thermal modification provides rich tones and dimensional stability.

Specifications

• Brand: Finnish Sauna Builders
• Product type: Indoor sauna interior kit
• Listed room size: 5 × 8 × 8 feet
• Wood options: Grade A knot-free Western red cedar, Thermo Aspen/Alder and Thermo Poplar
• Wall and ceiling boards: 1 × 4 tongue and groove
• Bench boards: Clear 1 × 4 with supports
• Bench depth: 20 inches
• Door frame: 27.2 × 78.7 inches / 690 × 2000 mm
• Door glass: 24.4 × 77.3 inches / 620 × 1963 mm
• Frame thickness: 1.65 × 3.6 inches / 42 × 92 mm
• Door rough opening: 28 × 80 inches
• Recommended ceiling height: Eight feet per manufacturer safety and clearance guidelines
• Heater choices described in source: Harvia KIP80W, KIP80B, Cilindro PC80, Cilindro PC80E, Spirit and Virta; all 8 kW
• Built-in control options: KIP80B and Cilindro PC80
• Wi-Fi control options: KIP80W, Cilindro PC80E, Spirit and Virta
• Heater stones: Included with listed heater options
• Protective railing: Listed with Virta only
• Customer-supplied components: Framing, insulation, electrical wiring and exterior wall covering

The kit includes an all-glass door, not a full glass wall. Backrests ship flat; on-site spacers can create an angled backrest. Wall boards normally run horizontally; where room width exceeds eight feet, an interior seam joins boards. Follow the recommended ceiling height and manufacturer clearance guidelines.