Sarah's Cob House Sarah, from England, built her cob home with only The Hand-Sculpted House, by Evans, Smith, and Smiley, as her guide. Her house, as she describes it, is more a series of columns than walls, filled in with windows, doors, and mosquito netting:: Natural Building: Abroad Tuesday, February 12, 2008 I’ve wondered about building with cob in this climate of wet seasons and hurricanes; I’d gotten the impression a cob home would melt exposed to such elements. However, this image shows the result of two seasons; nothing that couldn’t be cured with the additional layers of plaster already prescribed.