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Custom Sauna Kits In Portsmouth, NH


Have you always dreamed of having a sauna in your home but just don’t know where to start? We can make that dream a reality by taking care of all the details and customizing your sauna so it is exactly what you want.


The Expertise You Can Trust


As New England’s sauna experts, Great Bay Spa can equip your home with one of our custom sauna kits in Portsmouth, NH. A custom sauna kit gives you the greatest amount of flexibility in layout and design so it fits your space perfectly. You don’t have to settle for something that isn’t quite right for your space. We will customize it for you. We have over 40 years of experience in building custom-made saunas, and our design team can help you plan a sauna room that fits your space and your budget.


Custom Sauna Kits to Meet Your Needs


We work with you on the right design for your space. When the design is approved, the custom sauna kit is crafted at our facility in Portsmouth, NH. All components are custom-cut to your sauna’s precise specifications. Once the location in your home or business has been properly framed, wired, and insulated, your carpenter or contractor can install your custom-made sauna quickly and easily.


Standard Features of Custom Sauna Kits


  • Custom drawings and directions for your sauna room kit
  • Your choice of one of many Helo sauna heaters
  • The highest grade of Clear Vertical Grain (CVG), A+Better, tongue-and-groove Western Red Cedar boards, pre-cut to fit your walls and ceiling perfectly. (Other wood species are available — please ask.)
  • Interior trim for doors, walls, and ceiling
  • Custom, Western Red Cedar duckboard for the floor/walking area
  • Pre-assembled benches, built to last using 2×4 Western Red Cedar and made to your sauna room’s exact specifications
  • Pre-hung, Douglas Fir sauna door from Helo, featuring a full-view glass panel
  • Western Red Cedar guardrail for the heater
  • Helo accessory package that includes a wall light, thermometer, bucket, and ladle


Custom Features Available


  • Angled and custom bench configurations.
  • Upper and lower bench skirting.
  • Wall-to-wall backrests.
  • Glass sidelights and windows.
  • Wall-to-wall duckboards.
  • Handicapped-accessible door.
  • Custom LED lighting packages.
  • Additional accessories include digital controls, headrests, and curved backrests.


  • Contact us to learn more about our custom sauna kits. Give us a call at 800.436.8893 or email