​Hemp hurds, also known as shives, are the woody inner core of the hemp stalk, separated from the outer fiber (bast) during the retting and decortication process. They are highly valued for their porous, lightweight, and insulating properties, making them suitable for a wide range of industrial and commercial applications.

Building and Construction Materials

Hemp hurds are gaining significant traction in the construction industry as a sustainable and high-performance material.

Hempcrete

Hempcrete is a bio-composite material made from a mixture of hemp hurds, lime, and water. It is not a structural material but is used for wall infill, insulation, and moisture regulation.

• Insulation: Offers excellent thermal and acoustic insulation.
• Moisture Regulation: Naturally breathable, regulating indoor humidity and preventing mold growth.
• Fire Resistance: Highly fire-resistant due to the mineralized lime content.
• Carbon Sequestration: The lime binder re-absorbs CO2 as it cures, resulting in a carbon-negative material.

Insulation Batts and Panels

Hurds can be processed into compressed batts and rigid panels for use in floors, walls, and roofs. These products offer alternatives to conventional insulation materials like fiberglass and mineral wool.

Industrial and Consumer Products

Beyond construction, hemp hurds are used in various manufacturing processes.

Animal Bedding

Due to their high absorbency and dust-free nature, hemp hurds are an ideal bedding material for livestock, horses, and small animals.

• High Absorbency: Can absorb up to four times its weight in moisture.
• Odor Control: Naturally helps to neutralize odors.
• Reduced Dust: Low dust content is beneficial for animals with respiratory issues.

Bioplastics and Composites

Hemp hurds can be used as a filler or reinforcement in bioplastics and other composite materials, offering a sustainable alternative to wood flour and synthetic fibers.

• Lightweight Components: Creates strong yet lightweight materials for automotive and consumer goods.
• Biodegradability: Contributes to the overall biodegradability of the final product.

Absorbents and Sorbents

The porous structure of hemp hurds makes them excellent natural absorbents.

• Oil and Chemical Spills: Used to clean up spills in industrial settings.
• Agricultural Sorbent: Used to absorb excess moisture in soil.

Horticulture and Agriculture

In agriculture, hemp hurds serve multiple beneficial purposes.

Mulch and Soil Amendment

Hemp hurds can be applied to garden beds and agricultural fields.

• Weed Suppression: Provides a thick layer that blocks sunlight, inhibiting weed growth.
• Moisture Retention: Helps the soil retain water, reducing the need for frequent irrigation.
• Soil Structure: As they decompose, they improve soil aeration and structure.

Growing Medium

Hurds can be used as a component in soilless growing mediums for hydroponics and container gardening.

Application Category	Specific Use	Key Benefit
Construction	Hempcrete Wall Infill	Excellent thermal insulation
Industrial	Animal Bedding	High moisture absorbency
Biocomposites	Plastic Filler/Reinforcement	Reduced weight and sustainability
Horticulture	Garden Mulch	Weed suppression and moisture retention