The incoming environmental studies class gathered at Eastwood Elementary's strawbale house with Brad Masi, project coordinator for environmental studies. The students mixed mud plaster to waterproof the inside walls of the building and combined straw and clay to insulate the roof rafters. Site manager Mark Hoberecht and Carolyn Sturm, of Plaisir, France, make mud plaster. The volunteers put sand, clay, and water in the center of a large tarp and rolled the materials together.
Students mix the plaster by walking through it with their bare feet.