What foundation should I put the Plunge Sauna on?

Level & Stable Surface Requirements

✅ Your sauna must be assembled on a level, stable surface to ensure proper fit and long-term durability.

• The surface must be completely level to prevent gaps in the structure.
• An unlevel surface can cause:
  • Poor insulation and heat loss
  • Strain on the wood panels, leading to bowing and warping
  • Doors and panels not aligning properly

⚠️ Weight Capacity Requirement: The surface must be able to support up to 1,400 lbs (635 kg). If the foundation shifts or settles over time, it can compromise the sauna’s structure.

❌ Warranty Void Notice: Structural damage caused by an unlevel or unstable surface is not covered under warranty. Ensure proper site preparation before assembly.

Recommended Foundation Types

For long-term stability and durability, install your sauna on one of the following solid foundations:

Concrete Foundation

• A concrete pad at least 4 inches thick provides a strong, level surface.
• Ideal for permanent outdoor installations.

Wood Foundation

• A deck-style wooden platform made of treated lumber ensures stability.
• Must be reinforced to hold at least 1,400 lbs.

⚠️ Before placing your sauna, confirm that the foundation is completely level and stable to prevent long-term issues.

Surfaces to Avoid

The following surfaces are not suitable for sauna installation:

Grass, Dirt, or Loose Gravel

• These surfaces will shift and settle over time, leading to an uneven sauna structure.

Loose Pavers or Bricks

• Individual pavers may move under weight, making the sauna unstable.

Surfaces Prone to Erosion or Flooding

• Areas where water pooling or soil shifting occurs can damage the wood and compromise stability.

⚠️ If your surface is not suitable, install a proper foundation before assembling the sauna.