A composting toilet. Walls are framed and filled in with light straw-clay. The finish coat is a simple plaster made from clay-soil and sand. Mixing Clay slip that will be mixed with the straw. This can often also be done in a wheelbarrow with a hoe. Clay slip is being mixed in with the straw. This can also be done in a wheelbarrow. The proportion is about like "gravy on potatoes. " The form can be raised immediately after the light straw-clay has been tamped. Use screws for easy fastening and loosening, of apply wood clamps, so you don't have to worry about getting your drill muddy! The light straw-clay is now ready for a straw-clay plaster. Notice the thin strips of wood (nailed to the studs) that help stabilize the light straw-clay. Light straw-clay in combination with a timber frame. This little house is in the open-air museum in the Netherlands. Notice the relatively high foundation made out of fired clay brick. Light straw-clay is used here to fill in an arched entrance into a room. The material lends itself well for renovations such as these.