Carbon-Negative Footprint
Captures atmospheric carbon during hemp growth and as a construction material.
Atmospheric Carbon Sink
High-Performance, Fire-Resilient Hemp Plaster Wall Systems
Certified carbon-negative plaster protecting homes with proven fire resistance, mold immunity, and superior indoor air quality. Built for resilient California living.
Sierra Foothills Residence
Exterior and Interior Constructed with HempRock
Core Material Benefits
Engineered for Safety, Health, and Longevity
HempRock Plaster is an ecofriendly material that overperforms when compared to conventional alternatives.
Fire Resilience & Protection
Engineered to provide home fire resilience in high-risk zones.
High-Risk Zone Rated
Mold & Mildew Immunity
Naturally alkaline material composition prevents mold and mildew growth.
Naturally Alkaline (pH 12+)
In-home Temperature Regulation
Advantageous insulative properties, thermal mass, and vapor permeability that promotes ideal humidity ranges.
Thermal Mass & Moisture Buffer
Improved Air Quality
Zero emission of Volatile Organic Compounds (VOCs), adsorption of airborne particles, humidity buffering, alkaline binder, and continuous carbon sequestration.
Zero VOC & Active Purification
Rigorous Comparison
Material Performance Matrix
See how HempRock Plaster compares directly to conventional siding and interior wall systems across critical building performance benchmarks.
| Feature / Benefit | HempRock Plaster | Stucco | Vinyl Siding | Fiber Cement |
|---|---|---|---|---|
| Carbon Footprint/Impact | -Negative | +High | +Moderate | +High |
| Fire Resilience | PENDING (Expected Class A)* | Class A or B | Not Fire Resilience Rated | Class A |
| Mold & Mildew Resistance | High | Low to Moderate | Low | High |
| In-home Temperature Regulation | High | Moderate | Low | Low to Moderate |
| Improved Air Quality** | Yes | No | No | No |
*: Class A Fire Resilience rating certification pending.
**: A material must meet all defined requirements: Zero emission of Volatile Organic Compounds (VOCs), adsorption of airborne particles/odors, humidity buffering for optimal ranges, alkaline binder to inhibit mold/mildew growth, and continuous carbon sequestration.
Offerings & Programs
Two Paths to HempRock Excellence
Whether you need a turn-key professional installation crew for your project or certified material buckets and contractor training, we have you covered.
HempRock Application Crew Services
Premium, turn-key construction and application services for exterior siding and interior home renovations across Northern California.
- Professional, fully equipped and insured field plastering crew
- Complete substrate prep, lath installation, base coat & finish coats
- Custom smooth Venetian, modern matte, or textured earthy finishes
- On-site curing management and warranty quality inspection
Contractor Training & Material Supply
Standardized, documented training protocols for general contractors, bundled with direct HempRock material bucket distribution.
- Pre-mixed 5-gallon contractor buckets delivered directly to job site
- Step-by-step Standard Operating Procedures (SOPs) & video guides
- Hands-on contractor certification and mix-ratio calibration support
- Certified material safety sheets and building code compliance kits
Visual Gallery
Field Applications & Physical Samples
Explore real-world HempRock installations, artisan trowel finishes, jobsite bucket supplies, and laboratory sample tests.
Sierra Foothills Residence
Full exterior fire-resilient hemp plaster siding with natural sand cream tones.
Artisan Hand-Troweling
Multi-coat application process ensuring uniform thickness and durable bonding.
Breathable Interior Living
Seamless matte hemp plaster regulating moisture and purifying indoor air.
Pre-Mixed Jobsite Distribution
Standardized 5-gallon contractor buckets with batch consistency and easy workability.
Natural Mineral Texture
Close-up macro detail displaying authentic hemp fibers and velvety limestone matrix.
Hemp Supply Chain
We ensure our batches of hemp are quality controlled
Direct Contact
Start Your HempRock Project
Connect with our technical team to schedule crew application services or join our certified general contractor training & bucket supply program.
Project & B2B Inquiries
info@hemprockplaster.com
Nevada County Siding Compliance
Approved for interior and exterior residential siding applications across Nevada County, CA jurisdictions. Safe, natural, mineral-bonded hemp technology.
Request a Consultation & Estimate
Tell us about your upcoming build or renovation, and our technical director will respond within 1 business day.