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INTERNATIONAL
HEMP BUILDING
Hemp Materials
CORE PARTICLES FIBRESHurds/Shivs
The lightweight cellulose core of theHemp stalk is broken into small particlescalled hurds, during the mechanicalseparation from the fibres. These particlesare very absorbent and transfer watervapour quickly.
The fibres from the skinof the Hemp stalk are long,strong and hollow makingthem suitable forinsulation materials,reinforcement andsealing compressionsealing compressionjoints.
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Picture credits: hempbuilding.com
Hemp Building Materials
Hempcrete is made by mixing Hemphurds with a binder made with Lime,Clay and other materials dependingon the performance requiredand local availability.
Natural Lime Binderby Equilibrium Italy
Sprayed Hempcreteby hempbuilding.com
Hemp Fibre insulationby Technichanvre
Loose Hemp Fibre insulationHampvaruhuset Sweden
The resulting materialcan be incorporatedinto structuralenvelops.
HEMPCRETEHEMP FIBREINSULATION
Hemp fibres are ideal as areplacement for mineral fibres as theyhandle moisture more effeciently anddo not compress over time. They alsodo not cause dangerous fibres to enter the atmosphere duringinstallation or during the life time of installation or during the life time of the building.
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Hemp Building Systems
Hempcrete Applications
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Casting
Sprayed
Blocks
Panels
Hempcrete can be cast manually around a timberframework providing insulation, and heat storagequalities to the resulting living space. This ‘low tech’approach can be utilised in every region of the worldwith minimal training and simple tools.
The sprayed application of Hempcrete reduces installation times and lowers water content makingit more acceptable to the modern constructionindustry.
Hempcrete blocks can be laid in the same manneras masonry blocks or bricks currently used in buildingbut also provide insulation and moisture managementto the structure.
Prefabricated panels combining Hempcrete and Hemp fibre insulation produce a quick systemfabricated off site which provides a fast system ofcreating a building envelope to the domestic andindustrial sectors.
Cast external cladding Arbio Switzerland
Sprayed Hempcrete system Equilibrium Italy
Hemp panels Ian Pritchett UK
Hempcrete panel house Arbio Switzerland
Cannabric, Spain Equilibrium, Italy
Hemp Building Systems
Structural Examples
When applied surroundinga timber framework,Hempcrete providesadded strength to thestructure and can evenbe used in earthquakeprone regions whereprone regions wherethe felxibility givesresisitence to thedamaging movementpreventing collapse.Bamboo can also beused as a structuralframe making itframe making itsuitable fordeforested regions.
Large-scale buildingsusing concrete or steelas the main structuralsupport can be madecomfortable withHempcrete walls,floors and roofs.floors and roofs.Internal and externalwalls can be installed tocreate units withexcellent thermal andacoustic properties.
Timber Frame Structures
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Steel & ConcreteFrame Structures
Maison d’ Adam France © Hempbuilding.com
Earthquake proof frame Olver Zachatti Italy
Bamboo frame Wolf Jordan & Co, Belgium
Steel frame Equilibrium Italy
M&S Shopping Centre Cheshire Oaks UK
Case di Luca, Pedone Working Biscegli Italy
Hemp Building Impacts
Thermal imaging Haverhill BRE UK Masonry Stove in Hemp housePadraig Cohalan Ireland
EnergyThe use of hempcrete provides a verylow carbon footprint for the buildingas it is carbon negative as a materialand reduces the energy needed toeither heat or cool the interior.
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HealthThe manner in which hempcrete managesmoisture vapour avoids any problems with‘sick building syndrome’ caused by fungusspores, whilst maintaining a healthy levelof humidity in the building.
Fire test Steve Allin Ireland
Hemp plaster Steve Allin Ireland Hemp/Tadelakdt bathroomYves Khün France
FireHempcrete becomesmore fire resistantas it ages and will notproduce flames or emitnoxious gases if burnt
CO2Hemp absorbs up to 2 tonnes of CO2 per tonneof dry material harvested, making it a goodsequester of carbon. When this figure iscombined with the savings ofenergy when occupyingthe building it makeshempcrete an obvioushempcrete an obviouschoice for the future.
Membership of the IHBA provides accessto our database which includes presentations
from previous Symposiums and our Best Practice Guide.
IHBA Membership Benefits
Business membership
provides links andpromotion for your businessvia our website.
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IHBASupport our work promoting the use of Hemp
in Construction around the world
Our
Partners
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