I built a thatched hut with an underfloor heating system for the purpose of drying bricks, tiles and pottery faster. I built my standard small 2 x 2 m hut design first to keep the rain off the work site. Then I dug 8 meters of trench, 25 cm wide and deep, zig-zagging through the floor of the hut, while building up the sides with mud made from the excavated... see more