If you are talking about converting a room into a sauna, then you are going to need to strip the walls completely, you must be done to the bare studs of the room. One of the first things that you need to think about is that you need to insulate the room R-11 insulation for interior walls, and R-19 for exterior walls. This will decrease the cost of your sauna as it keeps the heat inside the room, this also as a perk is a sort of sound barrier so you can relax in peace. Because of the heat there is a large build up of vapour, this is why it is important to have a vapour barrier, this should be isntalled onto all interior surfaces. A vapor barrier protects your walls from absorbing vapor. Some steam in a sauna room is great to help bring on a sweat, but it creates humidity that should be isolated from the rest of your house.
Cedar panneling then needs to be added begin on one side of your ceiling and nail your cedar panel boards perpendicular to the joists. This wood is easy to work with as any cutting that needs to take place can be done with ease as the cedar wood is very soft. once all this is installed and the wood has been placed and secured all around the room. All areas must be secured by the wood so there is not any problems with leakages. When installing your Sauna motor, there are different types that will be set up in slightly different manners, but always use longer screws on top.