Depending on the type of wood your infrared sauna is made of, you can use it outdoors. If your sauna is made from basswood, birch, fir or Canadian hemlock wood, I don’t recommend using it outdoors because the wood may decay and deteriorate within a few years. If you plan on using your infrared sauna outdoors, look for red cedar and eucalyptus finishes, which are much more resistant to rot and decay. But even if you choose the right type of wood, you might still need a sauna cover to protect the electronics. For example, our Sunlighten mPulse sauna has two amplifiers and wiring in the ceiling that shouldn’t get wet. That’s why we had to cover the sauna with a waterproof fabric to make it fully outdoor-compatible.