Von Hanf
Comprehensive German hemp construction system: structural blocks, acoustic panels and plasterboard substitutes that sequester carbon.
German company (Schleswig-Holstein) that has industrialised hemp construction to make it accessible and scalable. Their range includes everything from hemp-lime blocks (Hemp Stones) to lightweight boards (Hemplith) that replace plasterboard, and acoustic panels (Silentlith). Their entire catalogue is carbon-negative, moisture-regulating and free of toxins.
The Complete Ecosystem: They don't just sell an "eco product", they sell the solution for building an entire house without concrete or plastics. Their Hemplith boards are a real, biological alternative to plasterboard/drywall, something very difficult to find on the market with industrial quality.
Chosen by Descarboniza. No company pays for what we say about it.
Go to their website300kg/m³
0.04W/m·K
B-s1,d0 (Euroclase)
Hemp Stones (09, 12, 30); Hemplith Universal LDF 800x1200x15mm y 1200x800x30mm; Hemplith Therm 1100x600mm (esp. 30-160mm); Silentlith 1200x600x20mm
Sistema integralTérmico y acústicoRegulador higrotérmicomanteniendo la humedad interior constante y libre de tóxicosResistencia al fuego B-s1,d0Secuestrador activo de carbono
There is no third-party verified Environmental Product Declaration for this material, so no carbon figure is published: neither self-declared nor estimated.
EPD declarada (Schönthaler KBOB, EN 15804), unidad '1 kg (densidad media 300 kg/m³)', GWP A1–A3 = −0,258 kg CO₂eq/kg. Nota jul-2026: densidad de la ficha corregida 100→300 kg/m³ según la unidad declarada de la propia EPD — 100 kg/m³ era una densidad de lana/aislante de cáñamo, no del bloque de cáñamo-cal (≈300-350 kg/m³). Con ello el GWP por m³ pasa de −25,8 a −77,4 kg CO₂eq/m³.
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Upgrade your listingTechnical questions and answers
- What is the thermal conductivity (λ) of Von Hanf?
- The declared thermal conductivity of Von Hanf is λ = 0.04.
- What is the density of Von Hanf?
- Von Hanf has a declared density of 300.
- What is the fire resistance of Von Hanf?
- The declared fire performance of Von Hanf is B-s1,d0 (Euroclase).
- Is Von Hanf a carbon-negative material?
- Yes. The biogenic carbon stored in Von Hanf 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.
