Coastal and humid environments

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Section 4.17Site preparation

Coastal and humid environments

Why the Bettr build (316 stainless, treated wood, fiberglass base) handles salt air and humidity, plus a maintenance schedule for installations near saltwater.

Bettr saunas are specified for coastal and humid environments. The 316 marine-grade stainless steel is the same standard used on boats, and the wood treatments handle high humidity.

Salt air
316 stainless does not corrode in salt air. The hardware is unaffected by typical coastal exposure.

Wood in humid environments

  • Nordic Spruce: thermally modified for moisture resistance. Performs well in coastal and humid conditions.
  • Canadian Red Cedar: naturally rot-resistant from thujaplicin oils. Performs well in coastal and humid conditions.

Maintenance for coastal installations within 100 feet (30 m) of saltwater

  • Rinse the exterior with fresh water every 2 to 4 weeks to remove salt deposits
  • Inspect hardware annually for any unexpected discoloration
  • Verify drainage around the foundation, especially during storm seasons

High-humidity inland environments: No special precautions beyond standard maintenance.

Hurricane and severe weather areas

  • Standard installations are not anchored to the foundation
  • In hurricane-prone areas, anchor the sauna to the foundation
  • Contact our team for anchoring guidance specific to your model and foundation type
  • Consider seasonal preparation (clearing the area, securing nearby objects that could become projectiles)

Last updated May 3, 2026