This hot water heater is made almost entirely of re-purposed and recycled materials. The tank is from a discarded electric water heater (pin holes were patched for now with a product called JB Weld). Most of the wood is from a demolished fence, The windows, sheet metal roof and door, and much of the hardware (screws, hinges, etc) came from the mobile home we disassembled a few years back. The shower hardware came from the same old mobile home. Basically the tank, painted black, is in an insulated box with a glass front. The water gets very hot. Photos of paintcrete/burlapcrete shower structure are to follow.