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What can I expect from hempcrete in terms of its thermal performance? The thermal properties of hempcrete are extraordinary. It provides insulation because of pockets of air trapped within the material; both in the spaces between particles of hemp shiv, and in microscopic pores in the hemp shiv itself. Compared to synthetic insulation materials, hempcrete […]
Hempcrete is completely natural and free from synthetic, fossil fuel based materials. Because hempcrete is naturally fire-retardant and pest-resistant (nothing eats lime!) there is no need to add chemicals to ensure its performance in these areas (as is usually the case with lightweight synthetic insulation materials). Chemicals added to conventional insulation materials often contain Volatile […]
Hempcrete is carbon negative Hempcrete is a “carbon-negative” or ”better-than-zero-carbon” material; more carbon is taken out of the atmosphere by the growth of the hemp plant than is emitted as a result of its production and application on site. Various estimates for the amount of carbon sequestered have been put forward, and of course this […]
So what exactly can you can use hempcrete for? In new-build, hempcrete is most commonly used to make walls, but can also be used to form floor slabs, ceilings, and roof insulation. Hempcrete walls In contrast to conventional insulation materials (which tend to be installed in a cavity within the wall, or added to wall […]
I own this gorgeous grade II listed timber framed building that dates from the 13th Century. Last year, one of the corner posts disintegrated and during the repairs, we discovered that at some point in its recent past, the walls had been repaired using concrete, tar paper and various other non suitable materials. The result […]
This blog is taken from a talk given by our very own Will at the Grand Designs live in London 2012. Description Timber (elm) framed barn on a green sandstone rubble to the ground floor. About 50 years ago the wattle and daub had been replaced in the in-fill panels with cement render on a […]
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UK Hempcrete