Tahoe Sauna Company · 4–6 Person Outdoor Sauna Plan with Changing Room (8x12)
Everything you need for the 8x12 build, with the quantities from your plan and a link to where we buy each item. Prices are estimates from when the plan was priced and will drift — check the store before you budget to the dollar. Lumber prices especially move around and vary by store.
Some links on this page are affiliate links. As an Amazon Associate, Tahoe Sauna Company earns from qualifying purchases. It doesn't change your price, and we only list what we'd use on our own builds.
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| 2x4x8 (framing studs) | 120 | $3.92 | Buy at Home Depot ↗ | Walls, ceiling, roof |
| 2x4x10 | 6 | $6.78 | Buy at Home Depot ↗ | Wall plates |
| 2x6x12 | 1 | $12.53 | Buy at Home Depot ↗ | Ridge board |
| 2x6x8 pressure treated (floor joists on slab) | 12 | $16.48 | Buy at Lowe's ↗ | Floor joists |
| OSB 7/16" sheathing 4x8 | 20 | $10.01 | Buy at Home Depot ↗ | Floor, walls, roof |
| Simpson ties 2x6 (joist hangers) | 12 | $1.77 | Buy at Home Depot ↗ | Floor joists |
| Rigid foam insulation 2" XPS 4x8 (under floor) | 3 | $17.68 | Buy at Home Depot ↗ | Floor insulation |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Cement backer board | 8 | $17.50 | Buy at Home Depot ↗ | On top of the OSB, under the tile |
| Grout | 2 | $18.48 | Buy at Home Depot ↗ | For tile |
| Mortar / thinset | 2 | $14.97 | Buy at Home Depot ↗ | For tile |
| Floor tile (hot room) | 7 | $26.91 | Buy at Home Depot ↗ | For tile |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Fiberglass insulation R-13 rolls (or mineral wool, more $$) | 11 | $27.97 | Buy at Home Depot ↗ | Between studs |
| Aluminum foil vapor barrier | 1 | See Amazon | Buy at Amazon ↗ | On top of insulated walls and ceiling |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Cedar T&G 1x6x12 (entire interior - walls + ceiling) | 100 | $21.98 | Buy at Home Depot ↗ | On top of furring strips (air gap spacers) |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Furring strips 1x2x8 (air gap spacers) | 65 | $1.78 | Buy at Home Depot ↗ | On top of vapor barrier |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| 2x4x8 cedar or redwood (3-tier L-shaped benches) | 40 | $10.88 | Buy at Home Depot ↗ | Benches |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| T1-11 siding | 11 | $44.34 | Buy at Home Depot ↗ | Siding |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Exterior door (changing room entry) | 1 | $500.00 | Source locally | Door |
| Interior door (hot room - offset placement) | 1 | $195.05 | Buy at Home Depot ↗ | Door |
| Hinges (3-pack) | 1 | $6.91 | Buy at Home Depot ↗ | Door construction |
| Door handles | 2 | See Amazon | Buy at Amazon ↗ | Door construction |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Double-paned insulated glass windows (lake-facing) | 3 | $250.00 | Custom / local supplier | Windows |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Building wrap | 1 | $39.00 | Buy at Home Depot ↗ | Between OSB and siding |
| Fascia board 2x6x10 | 6 | $9.92 | Buy at Home Depot ↗ | Roof finishes |
| Stain / paint | 2 | $24.00 | Source locally | Siding finishes |
| Drip edge 10ft | 7 | $8.98 | Buy at Home Depot ↗ | Roof finishes |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Shingles | 4 | $43.47 | Buy at Home Depot ↗ | Roof finishes |
| Roof underlayment | 1 | $35.98 | Buy at Home Depot ↗ | Roof finishes |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| LED lights | 2 | See Amazon | Buy at Amazon ↗ | Installed under the middle or top bench |
| LED adapter | 1 | See Amazon | Buy at Amazon ↗ | For connecting the lights to the 14 ga wire |
| Electrical wire - 14 gauge | 2 | See Amazon | Buy at Amazon ↗ | For the lights (and the optional fan) |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| 4" exterior vent caps | 3 | See Amazon | Buy at Amazon ↗ | Outside wall, over the vent openings |
| 4" flexible ducting (16 ft) | 1 | See Amazon | Buy at Amazon ↗ | Goes in the walls |
| Closeable vent cover | 3 | $25.00 | Buy at Superior Saunas ↗ | Installed inside over the vent holes |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Harvia Cilindro 9kW or 10.5kW (240V) w/ wifi | 1 | $2,500.00 | — | Stove |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Screws (3" construction) | 3 | $10.98 | Buy at Home Depot ↗ | Construction materials |
| Window / door caulk | 2 | $7.98 | Buy at Home Depot ↗ | Construction materials |
| Framing nails | 1 | $48.68 | Buy at Home Depot ↗ | Construction materials |
| Brad nails | 1 | $32.68 | Buy at Home Depot ↗ | Construction materials |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| AC Infinity CLOUDLINE S4 4" inline exhaust fan | 1 | See Amazon | Buy at Amazon ↗ | Optional. Pulls air out through the low exhaust vent by the foot bench; includes a speed controller |
| 4" duct clamps | 1 | See Amazon | Buy at Amazon ↗ | Optional. Clamp the duct to the fan |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Floor drain | 1 | See Amazon | Buy at Amazon ↗ | Centered in the room. Run the line to daylight, a dry well, or a plumbing tie-in per local code |
| Shims for the sloped floor (bundle) | 1 | $14.98 | Buy at Home Depot ↗ | Starburst pattern from the drain, about 1/4" drop per foot |
| Item | Qty | Est. unit cost | Where to buy | Notes |
|---|---|---|---|---|
| Concrete topping mix (80 lb) | 5 | $8.48 | Buy at Home Depot ↗ | Spread over the shims and screed to the shim tops so the slope stays. A self-leveler would flow flat, so use a topping mix |
| EPDM rubber floor membrane | 1 | See Amazon | Buy at Amazon ↗ | Over the cured sloped base, a few inches up the walls, sealed to the drain flange |
| EPDM bonding adhesive | 1 | See Amazon | Buy at Amazon ↗ | Glues the EPDM to the sloped base |
| Water cut-off mastic (11 oz) | 2 | $10.97 | Buy at Home Depot ↗ | Seals the EPDM at the drain |
| Seam roller | 1 | See Amazon | Buy at Amazon ↗ | Presses the EPDM down |
| Cedar 1x4x8 boards (duckboard) | 24 | $12.83 | Buy at Home Depot ↗ | Removable duckboard sections that sit on the EPDM |
Questions about a substitution or a part that's out of stock? Email hello@tahoesaunacompany.com.
Schedule a free 15-minute intro call or send us a message about your project.
We'll learn about your space, goals, and timeline — and recommend the right next step for your project.