Hemp shiv + lime binder cast around a frame; breathable, good thermal mass and insulation combined.
Cost
Medium
Upkeep
None
Skill to build
Intermediate
Lifespan
100+ years, lime-bound hempcrete is commonly cited alongside cob/rammed earth for multi-generational durability if kept from standing water
Embodied carbon
Low
Space / material use
Medium
Output timing
None
Skill to repair
Basic
Regulation (FR example)
New construction falls under RE2020, which sets thermal and carbon performance thresholds for the building as a whole rather than approving individual materials.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Inputs
none
Outputs
none
Sources
Hempcrete durability literature (Encyclopedia MDPI hempcrete properties entry)
What this page does not tell you
No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.