5 x 8 ft Indoor Cedar Sauna Plans
A printable, to-scale blueprint for this exact 1525 x 2150 x 2440 mm build: scaled elevation drawing, colour-coded board cutting diagrams, master cut list and a step-by-step assembly and fixings sheet.
Open this exact build in 3D (free)Get the full PDF - EUR 9.90What the PDF blueprint includes
- Sheet A-01 - project summary and master cut list with every exact length
- Sheet A-02 - to-scale front elevation and side section with dimensions
- Sheet C-02 - colour-coded cutting diagram for every stock board (3mm kerf allowed)
- Sheet D-03 - step-by-step assembly sequence, fastener schedule and tool list
Key numbers for this build
Build size1525 x 2150 x 2440 mm
Primary specSauna Volume: 8.0 m³ (Rec. Heater: 9.2 kW)
Secondary spec2-Tier Cedar Bench (1345 mm Span)
Stock boards52 x 2400 mm
Total cuts52 (33.7% waste)
Est. timber costEUR 1435 (pro quote ~EUR 9,240)
Watermarked 2D framing elevation preview. Sheet A-02 in the PDF includes unwatermarked 1:20 / 1:25 dimension arrows and side section.
Cut list preview
| Part | Component | Section | Qty | Cut length |
|---|---|---|---|---|
| W-01 | Insulated Wall Sole & Top Plates (4 Walls) | 38×89mm | 4x | 1525 mm |
| S-01 | Vertical Wall Framing Studs (400mm O.C.) | 38×89mm | 20x | locked - in PDF |
| B-01 | Upper & Lower Cedar Ergonomic Bench Rails | 38×89mm | 8x | locked - in PDF |
| R-01 | Ceiling Joists & Glass Door Rough-In Header | 38×89mm | 10x | locked - in PDF |
The first cut length is free. All exact lengths, the board-by-board cutting diagrams and the scaled drawing are in the PDF.
1D Stock Board Cutting Map Preview (2400 mm boards)
Showing first 4 of 52 stock boards (3.0 mm saw-blade kerf compensation active). All 52 boards are mapped in Sheet C-02 of the PDF.
Hardware & Fastener Shopping List
| Fastener / Material | Estimated Qty | Structural Use |
|---|---|---|
| Stainless / galvanised screws 5.0 x 90mm | 229 pcs (3 boxes of 100) | Frame joints (heat & moisture) |
| Stainless T&G cladding nails 40mm | 727 pcs (2 boxes of 500) | ~20.8 m2 of cedar |
| Aluminium foil tape 50mm | 2 rolls | Vapour barrier seams |
| Stainless screws 4.5 x 50mm | 120 pcs | Bench slats, fixed from below |
How to build it
- Prepare the site: level, waterproof floor with a drain nearby. Have an electrician confirm the supply for a 9.2 kW heater BEFORE you build.
- Cut every member from Sheet C-02 board by board, then write its part ID on each piece in pencil so nothing gets mixed up.
- Fix the wall sole and top plates (W-01) for all 4 walls.
- Stand the wall studs (S-01) at 400mm (16") centres, leaving a ~700mm door opening with a doubled header.
- Fit the ceiling joists and door header (R-01).
- Insulate every cavity with mineral wool, staple aluminium-foil vapour barrier on the WARM (inside) face, tape every seam, then fit 20mm air-gap battens.
- Clad the walls and ceiling with cedar tongue-and-groove, secret-nailed with stainless nails.
- Build the 2-tier bench (B-01) at 450mm and 900mm above the floor. Install the heater exactly per its manual (clearances, guard rail), with a low fresh-air inlet near the heater and a high outlet opposite.
Tools: Mitre / circular saw, Drill-driver + impact driver, Spirit level (1200mm / 4ft), Tape measure, square, pencil, Staple gun, Brad nailer (stainless nails).
FAQ
- How much timber do I need?
- 52 stock boards of 2400 mm (52 cuts in total, 33.7% offcut waste). Estimated timber cost is about EUR 1435.
- What size heater does this sauna need?
- Sauna Volume: 8.0 m³ (Rec. Heater: 9.2 kW). Always confirm with your heater maker's room-size table and have an electrician check the supply.
- What size is the build?
- 1525 mm wide x 2150 mm high x 2440 mm deep. 2-Tier Cedar Bench (1345 mm Span).
- Can I change the dimensions?
- Yes. Open the 3D configurator, move the sliders to your exact room or project size in millimetres or inches, and the cut list, board count and drawings update instantly.
- What is in the paid PDF?
- A landscape A4 blueprint with every exact cut length, a scaled framing elevation, colour-coded board cutting diagrams, the assembly sequence and a fastener schedule. It is a one-time EUR 9.90 download.
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