# 10 x 12 cedar sauna

[View plan on DIY Plans](https://diyplans.org/plans/10x12-cedar-sauna)

An outdoor electric sauna with U-shaped cedar seating and a removable cleaning step.

Plan an outdoor sauna for four adults with high U-shaped benches, a long reclining return, closed cedar faces and simple vertical bench supports. The illustrated sequence and complete CAD coordinate an insulated, drained shell. Select the foundation, roof package, connections and equipment installation for the actual site.

## License

Owner-authorized publication of the original DIY Plans deliverables.

## Categories

Structures, Outdoor shelters

## Configurations

- [Electric, four-person](https://diyplans.org/plans/10x12-cedar-sauna/variants/electric-four-person.md): Clear cedar interior with high benches, a full-length reclining return and a removable lowest step. Revision 2. Default configuration.

## Plan package

[Get the plan package for $19 USD](https://diyplans.org/buy/10x12-cedar-sauna). Illustrated instructions remain free to read.

## Sources

Original design informed by selected principles in Trumpkin's Notes on Building a Sauna, VTT ventilation research and the cited manufacturer instructions. Clear cedar and closed bench faces are project choices, not a claim of compliance with every recommendation in those sources.

- [Trumpkin's Notes on Building a Sauna](https://localmile.org/trumpkins-notes-on-building-a-sauna/)
- [VTT Tiedotteita 1431 (1992)](https://publications.vtt.fi/pdf/tiedotteet/1992/T1431.pdf)
- [HUUM HIVE US installation manual](https://huumsauna.com/wp-content/uploads/2025/07/H1002L03_v13_HIVE_user_manual_USA_PRINT.pdf)
- [HUUM UKU 4.2 US manual](https://huumsauna.com/wp-content/uploads/2025/09/UKU_4.2_Manual_v1_US_web.pdf)
- [Building Science: BSI-010](https://buildingscience.com/sites/default/files/document/bsi-010_wine_cellars_cv2.pdf)
- [ASC Skyline metal roofing](https://www.ascbp.com/product/skyline-metal-roofing/)
- [VTT sauna temperature and ventilation publication record](https://cris.vtt.fi/en/publications/saunan-l%C3%A4mp%C3%B6tilat-ja-ilmanvaihto/)