The project is made with ultra-light materials that stand up well to moisture. It is essentially a box that measures 5 feet tall and 4 feet square. It is constructed using a plastic pipe frame and lined with reflective insulation. The box sets directly on the floor for a single steam session and then can be moved to allow everything to dry thoroughly.
My steam generator is a 900 watt hot plate under a pot of water. With this configuration, the upper half of the box can reach 122 F, while the lower half can be as much as 10 degrees cooler. If you prefer higher temps, either add more wattage or add more insulation.
I judged the final result as acceptable. It offers all the qualities I expect from a top end facility without the cost. When I really have the itch to hit the steam room, its great to have this option right inside my home, 24/7.
The total cost for me for this project was about $100. I did not have to buy the stock pot because I already have one. The pot is especially important to the quality of atmosphere in your steam room. Use a pot with a SOLID thick base, and best results will come from stainless steel.
Cost and Materials
8 each of 1/2" cold water pvc line 10' long - $16 (lowes)
16 each of 1/2" slip 90 degree elbow - $4 (lowes)
1 each of 48" wide x 24' long roll of Reflectix - $40 (lowes)
100 each zip ties - $6 (lowes)
Electric hot plate 900 watts - $20 (target)
6-quart stainless steel stock pot - $30 (target)
A hacksaw for cutting pipe.
A utility knife for cutting insulation.
Pliers for cinching certain zip ties.
I dimensioned the steam room to stay within the limits of a single roll of Reflectix. And if you are like me, you will probably need to use the hacksaw to cut the pipe in half in the parking lot so they will fit in your car.
This video is an overview of the finished product (with no steam of course):