HempTEC® Hurd

Hurd is the inner woody core of the hemp stem, the part the bast fibre grows around. It is made up of holocellulose, the cellulose and hemicellulose that form the plant’s cell walls, and is supplied with no treatments, additives or dyes. Its light, porous particles give it a low bulk density and allow it to take up water, so moisture content and absorption are central to setting mix water and binder dosage.

Consistency is what makes hurd perform as a building aggregate. HempTEC® Hurd is graded to a defined particle range, supporting repeatable mixing, placement and finished density. Dust is controlled to 2 per cent or less passing 0.25 mm and loose fibre is kept low, with no visible fibre clumps to disrupt coating or handling. Moisture is held below 13 per cent. The specification has been developed against leading European construction-hurd benchmarks and is validated with each binder system. Always follow the binder or system provider’s approved formulation and installation guidance.

HempTEC® Hurd is 100 per cent New Zealand-grown industrial hemp hurd, supplied untreated. Particles measure 2 to 30 mm long, 1 to 7 mm wide and around 1 mm thick, with a loose bulk density of 55 kg/m³ and moisture below 13 per cent. Hurd is compressed into 10 kg bales that expand around 3.2 times to roughly 180 litres of loose material. Every batch is traceable to its farm, harvest, storage and production run.