Locally Sourced Materials for Superior Building Envelopes

Hempcrete is a monolithic, bio-composite wall infill material that replaces conventional cavity insulation, drywall (GIB), and synthetic wraps with a single, highly durable substrate.

By sourcing hemp hurd grown and processed right here in Te Tai Tokerau, contractors will eliminate expensive freight costs and secure a reliable, high-quality supply for Northland projects.

• Thermal Mass & Energy Savings: Delivers dynamic thermal regulation, phase-shifting heat storage to cut operational HVAC heating and cooling loads by 30% to 50%.

• Breathable Moisture Control (Hygroscopic): Vapour-open walls passively absorb interior humidity during wet periods and release it as air dries, preventing condensation, mould, and timber rot.

• Fire & Pest Resilient: Encapsulated cellulose hurd achieves Class A flame spread ratings, BAL-29+ bushfire suitability, and natural repellency to insects and rodents.

• Net-Carbon Negative Footprint: Every cubic meter of hempcrete wall sequesters approximately -110 kg of net CO₂e over its service life, locking carbon inside the wall structure.

The Complete Infill Supply Package

TaiTokerau Hemp will supply independent builders and contractors with complete hurd and binder packages:

• Bulk Processed Hemp Hurd: Clean, screened, dust-extracted hemp hurd produced in Northland for timber frame infill and pre-cast block applications.

• Formulated Mineral Binders: High-performance lime and geopolymer binders engineered for consistent curing and structural protection.

• Forced-Action Pan Mixer Hire: Industrial, high-torque pan mixers available for site hire to ensure thorough aggregate coating.

• Modular Wall Shuttering Kits: Reusable plywood and aluminum shuttering sets available for project rental.

Upskill Your Crew

Hempcrete wall installation is fast and simple to learn. In collaboration with our partners, we will run 2-day practical, hands-on workshops covering:

• Mix ratio calculations and moisture control

• Formwork setup and stud alignment

• Tamping techniques for structural timber frames

• Breathable exterior lime renders and interior clay plasters

A single Licensed Building Practitioner (LBP) or site manager can complete the course and supervise general site labour during wall construction.