There were two distinct roof types found in this region. Both types are placed on a rectangular house that has a hearth or fire pit. One type consists of gabled, paired ridgepoles, vertical walls, and roof planks with an interior pit that was reached via steps. James Cook described the shed roof structures on Vancouver Island and around Puget Sound. His description is that of a cruder type of building that may have been in the adaptive stages of the house type possibly brought to the coast by the Salish people, who modified as needed with the change in location. These shed roof houses are the largest constructed anywhere in this region.