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Hemp blocks

IsoHemp / Hennep Blokken

By compressing a mixture of hemp, water and lime and drying it in the open air, hard blocks are created that – when used in the insulating shell of a building – store and release heat and moisture. Waste that emerges during production, construction and demolition can be reused or serves as a calcareous soil improver.

Hemp blocks by Isohemp are made of:

  • 85% Hemp
  • 15% Lime
Hemp blocks as wall insulation

Production process

  • Hemp is grown as a crop: it takes one year to grow hemp.
  • Hemp shavings are obtained by breaking and shredding the hemp fiber.
  • Lime is obtained by burning limestone and extinguishing with water.
  • Both materials are mixed with water and pressed in molds.
  • The pressed blocks are taken into the open air to harden. This takes 2-3 months.

Hemp blocks store both warmth and CO2 inside a building

Applied

This material is already being applied new construction and renovation. The blocks are applied in the insulating shell of a building, in floors and as partition walls.

Old farm renovated with hemp blocks

Environmental impacts

  • Hemp, like any plant, stores CO2 while growing. The amount of CO2 that is bound by hemp is more than the amount of CO2 that is produced during transport of the materials and the production process of the hemp blocks. Thus, hemp blocks are a CO2 negative material.
  • Hemp is a crop that has many environmental benefits: it prevents subsidence, stimulates biodiversity and improves soil quality.
  • Waste that emerges during production, construction and demolition of hemp blocks can be used as a calcareous soil improver.

Also nice!

  • Regulates heat and humidity
  • Ensures a pleasant indoor climate
  • Naturally anti-microbial: prevents fungal growth

Growth opportunities

Because of the natural composition of the product, it is difficult to obtain a constant homogenous mixture.

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