Foundation: Ritual 3-Person

Section 4.3Site preparation

Foundation: Ritual 3-Person

Footprint, foundation rating, and acceptable surfaces for the 3-Person model.

The 3-Person sauna requires a foundation that supports a loaded weight of 1,540 lbs / 700 kg.

Footprint
74.8 inches × 51.2 inches (190 cm × 130 cm).
Foundation rating
Minimum 1,540 lbs / 700 kg distributed across the footprint.
Recommended foundation thickness for poured concrete
4 inches / 10 cm minimum.

Acceptable surfaces

See Section 4.1 for general principles.

  • 4 inch poured concrete slab
  • Existing concrete patio rated for similar load
  • Wood platform built to support 1,540 lbs distributed
  • Deck rated for 1,540 lbs of additional load on the footprint area

For clearance around the unit, see Section 4.11.

Last updated May 3, 2026