Answer: Great question! The answer is really as simple as: “whatever size feels right.” You can source tempered glass for your candle window from a local glass company. A piece of 1/4″ tempered glass is not too expensive and it can be cut to the exact size you like.
- Frame your common wall (the wall between your sauna hot room and your changing room) 16″ on center, as usual.
- Get a piece of cardboard and cut it out to what you think would be a good candle window size.
- Tack up the cut cardboard where you think it makes sense.
- Imagine your sauna benches in place.
- Walk around to ensure you’ve got it in the perfect location.
- Fold or add cardboard to ensure you’ve got it the perfect size.
- Keep in mind views and angles and the wall on either side.
- Mark your final candle window location.
- Sawzall existing stud, if necessary, and frame in for your window, using 2×4’s.
IMPORTANT: Don’t do #9 until you have your glass in hand. Glass is 110% unforgiving. When framing for your window, it’s important that the opening is plum and square, and the opening is at least 1/4″ larger than the piece of glass. As you set your glass inside the frame opening, it’s a good idea to use glass little cork glass spacers, so the glass rests on these spacers, and not directly on the window framing.