Hemp Block UK
High-density hemp and lime blocks for enclosures and insulation, with a verified EPD and negative carbon footprint.

A system of prefabricated hemp (hempcrete) blocks air-cured (with no firing). They allow walls to be built with thermal inertia and moisture regulation without the drying times of sprayed hemp applied on site. Its BioSys system (with Vicat natural cement) or pure lime versions offer solutions for new build and refurbishment, guaranteeing a breathable and healthy building envelope.
Data, not promises: It's one of the few biomaterials companies to publish its detailed Life Cycle Assessment (LCA) openly. Its system demonstrates that it sequesters more CO₂ than it emits (approx -11kg CO₂/m³ in product), scientifically validating the concept of the "building as a carbon sink".
Chosen by Descarboniza. No company pays for what we say about it.
Go to their website330kg/m³
0.07W/m·K
Euroclase B-s1,d0
500x200mm en espesores 80mm, 120mm, 250mm, 300mm
[Carbono Negativo] [Regulación Humedad] [Aislamiento Térmico] [Absorción Acústica] [Ignífugo B-s1Ignífugoregulación higrotérmicaaislamiento acústico
165kg/m³
EPD Senini (EPD Italy, NOV 2022)
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Upgrade your listingTechnical questions and answers
- What is the carbon footprint (GWP) of Hemp Block UK?
- Hemp Block UK declares a GWP (A1–A3) of 8.07 kg CO₂e/m² according to its verified EPD.
- What is the thermal conductivity (λ) of Hemp Block UK?
- The declared thermal conductivity of Hemp Block UK is λ = 0.07.
- What is the density of Hemp Block UK?
- Hemp Block UK has a declared density of 330.
- What is the fire resistance of Hemp Block UK?
- The declared fire performance of Hemp Block UK is Euroclase B-s1,d0.
- Does Hemp Block UK have an Environmental Product Declaration (EPD)?
- Yes. Hemp Block UK has a verified EPD (EPDITALY0347 (declaration SEN-01_22)) under EN 15804+A2 (PCR ICMQ-001/15 rev.3).
- Is Hemp Block UK a carbon-negative material?
- Yes. The biogenic carbon stored in Hemp Block UK exceeds its manufacturing emissions (A1–A3), according to its environmental documentation.
Values as declared by the manufacturer or its EPD. Always check the current EPD/technical sheet for project-critical calculations.


