An earthen floor, also called an adobe floor, is a floor made of dirt, raw earth, or other unworked ground materials. It is usually constructed, in modern times, with a mixture of sand, finely chopped straw and clay, mixed to a thickened consistency and spread with a trowel on a sub-surface such as concrete. Once dry, it is then usually saturated with several treatments of a drying oil.
- Variety of colors, textures, and materials
- Can be installed over nearly any subflooring
- Integrates well with in-floor radiant heat tubing
- One of the cheapest flooring methods, green or otherwise.
Earthen floors were predominant in most houses until the mid 1300s in Europe, and persist to this day in many parts of the world. In medieval times, almost all peasant housing had earthen floors, usually of hardpacked dirt topped off with a thin layer of straw for warmth and comfort. Soil in the southwestern parts of the US contain nearly a perfectly mixed ratio of adobe.
Earthen floors were discovered in ancient Greece  , and in many other early developing civilizations.
In modern times, most earthen floors are often laid over the top of a subfloor of tamped gravel and then a mixture of clay, sand and fiber are mixed and leveled onto the tamped subfloor. These layers can be 1/8 to 1/4 of an inch thick. The thinner layers will dry faster but require a better subfloor for strength or more layers. Earthen floors can be laid over the top of previously installed wood floors but weight can become an issue.
- ↑ Gies, Frances & Gies, Joseph, Life in a Medieval Village
- ↑ Mitsu,Ahn , Developments in History: China
- ↑ McAllister, Marian Holland; Bradley A. Ault (2005). The Excavations at Ancient Halieis: The Houses: The Organization and Use of Domestic Space. Indiana University Press. p. 103. ISBN 0253347106. http://books.google.com/books?id=nGwIb2uEIbIC&pg=PA103&dq=Earthen+floor&ei=QQ_-SJm7O4uWyATm3cWiDw&client=firefox-a.
- http://www.dancingrabbit.org/newsletter/Newsletter0701-floors.php (6 parts sand, 2 parts clay, 1 part finely chopped straw)
- http://www.housealive.org/newsletter-archive/earthen-floors.html (5 in road base + 1 in [70% sand, 30% clay and about 10% straw])
- Gelles, David, "Down and Dirty", The New York Times, February 8, 2007
- http://www.LanderLand.com (step by step how to)
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