Exterior, Curved RoofLine, Camper Building Type, Wood Siding Material, and Metal Siding Material The Leaf House is a lightweight, mobile trailer that was carefully engineered to weigh less than 5,000 pounds. The designer, Laird Herbert, used a metal-mesh, open-joint rainscreen as the cladding on the front end, and spruce pine at the back.  Tiny Homes from A Modern Trailer is an Experiment in Small-Space Living