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article: Hemp Homes could be the future
Hemp is a versatile material used for paper, health food supplements, fabric and a growing list of other uses. Add to the list a new use - environmental freindly building materials.
A wide variety of construction materials can be made from Hemp fiber, such as composite fiber board which is both lighter and stronger than comparable wood products, 2x4's, lightweight concrete substitutes that have both insulative and soundproofing qualities. Isochanvre, a French company has built over 250 hemp homes. They have combined Hemp fiber with lime to create a thermal and acoustical barrier which is stronger and 7x lighter than concrete!
A Suffolk-based study into using the material to build environmentally-friendly homes has found hemp to be the ideal choice and, although more expensive than conventional brick and block, experts are sure the costs will fall.
The social housing organization in Suffolk, England has completed a test project that studied the environmental impact, energy use and other factors of hemp housing in comparison to more traditional construction methods.
The project involved the
construction of eighteen dwellings, 16 of which were built using
The main findings were:
The project was studied by the Building Research Establishment (BRE) in regards to the sustainability, economic and environmental differences between the two construction methods. The first tenants moved into a two-bedroom hemp home in December, 2001. For three months, their lives were closely monitored by sophisticated instruments measuring qualities such as insulation, energy efficiency, sound proofing, structural stability, resistance to water and condensation factors. The second hemp home remained empty until the spring of 2002 so that its properties as an unoccupied house could also be monitored. The same occupation pattern applied to the brick/block houses.The hemp homes feature the use of natural materials such as wooden window frames and clay tiles on the floor of the kitchen. Some analysts say that the whole effect gives the buildings a more natural, warmer feel than many of today's modern homes.
The BRE reports principal conclusions are that while the hemp homes have far less impact on the environment they use less energy to build, create less waste and take less fuel to heat they cost about 10 percent more to build than brick and block houses. It is expected that this cost will go down with production efficiencies and economies of scale.
The full report is available
A Canadian company has developed an "Enviro shake" which looks like
a handsplit cedar shake but is made from hemp and 100% recycled materials
and has a 35 year warranty!
The Lakota tribe is
also receiving $5 million from US feds, to replace two dozen homes recently
destroyed by tornados. They intend to use part of that money for hemp-based
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