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Natural Building Material Types
__>Cob__ - "cobs" of moist earth and straw __>Straw Bale__ - infill in a post-and-beam structure, or as a load-bearing system, where the bales themselves support the weight of the roof __Adobe__ - sun-dried mud bricks stacked with a mud mortar __Bamboo__ - grows very quickly, providing renewable material for building __Compressed Earth Blocks__ - similar to adobes, with the main differences being they are not fully saturated with water, __Cordwood__ - small lengths of wood as a masonry unit mortared with a cement-based mortar __Earthbags__ - soil-filled fabric sacks or tubes __Earthen Floors__ - pouring or tamping one or several layers of an earth mixture over a substrate of gravel, pumice or sand, and hardening agents __>Hybrids__ - several techniques combined __>Straw-Clay__ - coating loose straw with a clay slip and tamping it into forms as an infill for timber-frame structures __Hemp and Other Fibrous Plants__ - create a pressed board product to replace plywood __Natural Plasters and Finishes__ - mud- or lime-based plasters __Paper Blocks or Fibrous Cement__ - re-pulp paper and mix it with cement, making blocks __Rammed Earth__ - a soil mixture with a clay content of 20% and a moisture content of 10% is then rammed in layers using mechanical or hand tampers __Thatch__ - reeds, grasses or palm fronds as a roofing material __Wattle and Daub__ - weaving branches (wattle) as a support for mud plaster (daub)

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