Hemp has proven to be a 100% sustainable building material, boasting a remarkable negative carbon footprint, absorbing -75 kg CO2 per cubic metre. Hempcrete, made from hemp, lime, and water, is an eco-innovative material that can be formed into blocks and used for construction. Buildings made with hempcrete easily achieve the standards for passive houses, biodynamic designs, and ultra-low energy consumption. What’s more, it is rot-proof, deters rodents, and boasts top-tier ratings for fire and earthquake resistance.
Hempcrete simplifies construction by improving airtightness, improving moisture regulation, and ensuring optimum thermal and acoustic comfort with its ability to absorb up to 44 dB of external noise. Its fire resistance lasts up to 240 minutes, earning it the highest certification: Classification B-s1, d0.
Thanks to its outstanding insulating properties, hempcrete helps keep homes cool in summer and warm in winter, without relying on air conditioning or central heating. Its low thermal conductivity of just 0.071 ensures efficient energy use. The lime’s natural breathability also allows walls to ‘breathe’, creating continuous air renewal as if the home were wearing a breathable fabric. This keeps indoor humidity between 35% and 60%, the so-called ideal ‘comfort zone’ where mould, dust mites, and mosquitoes struggle to thrive.
Hempcrete: building a greener future
