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Custom cut permanent sauna installation information

General sauna rough in requirements

For more rough in details click here.

Refer to the actual installation manual for specific information.

Custom cut sauna packages include everything for the inside of your sauna.  You supply a studded insulated room with the ceiling studs between 84" and 86" high, a rough opening for the pre-hung door that comes with the package, and insulate everything using unfaced fiberglass batt insulation.  In addition you would get your electrical roughed in for the light, heater and control.  We can make a custom cut sauna package for any size, any shaped room.   You can convert an unused closet, storeroom, root cellar, or just frame up your own any size you want.  See below for a few suggestions of sizes and layouts but remember, we can do any size, any shape.  It doesn't cost any more for custom.

See below for more specific information on how to prepare.

  • The rough-in ceiling height of any sauna should be 84" to 86” maximum. The ceiling joists should run the longest direction across the ceiling so the finished T&G ceiling boards will run the short direction.

  • Sauna heater power needs to be run from the breaker to the sauna heater location in the sauna. Normally this power feed should enter the sauna near the floor at the spot where the heater will sit.  The heater should be connected using some type of flexible conduit leaving 4 or 5 feet of wire to allow the heater to be moved and tipped for future service and re-rocking.

  • Except for heaters with built in controls, a chase for the sauna heater control wires will be needed from the location of the sauna heater to the location of the sauna controls outside the sauna. In a commercial setting the controls are normally mounted in an area that is not accessible to club patrons / customers. In residential the control should be mounted at a comfortable viewing height, usually around 60” off the floor +/- depending on the height of the people that will be using the control.

  • A Except for heaters with built in controls a chase for the temperature sensor should be installed from the heater control to a location that is no more than 3.5” from the ceiling. Different heaters have different requirements for this so please refer directly to the manual of the specific heater being used. Generally the sensor is directly over the heater.

  • LED under bench or behind backrest lights (when applicable) require a switched outlet that should be installed where it’s hidden under the upper bench and within reach of the LED plugs. Consult with actual drawing for exact placement. (we will provide you a drawing and quote for free)
  • The standard sauna light needs a standard round light box mounted on a side wall, approximately 4” down from the ceiling, and about 8” away from the rear wall.
  • Frame for an air inlet at floor level directly below the heater, and for air outlet on the back wall, (opposite wall) with the top of the outlet opening at 23” off the floor, and in the center of the wall. Normally this should be a 4” x 6” opening. If the heater is near the door the gap below the door can normally serve as the air inlet.
  • Rough in for the door in exact size and location shown on the room drawing. Jamb width should be determined in advance so the door jamb width can be made properly.
  • Blocking will be needed to support the weight of any wall mounted heaters. Refer to actual sauna drawing to determine that location.
  • All walls and ceiling should be insulated with un-faced fiberglass batting.
  • Saunas with vertical wall boards need to have 1” x 3” furring strips installed, starting tight to the ceiling and floor and 16” OC or ½” plywood can be installed on the interior after all rough in items are finished. The furring strips or plywood need to be considered prior to ordering to determine proper door jamb width and the final rough interior wall to wall dimensions as the wall boards are cut to fit exactly.


Refer to specific installation manuals for full details.

Call us for information and prices 1-800-809-9111