Hemp Materials Performance
Hemp Materials Performance
Engineered for long-lasting protection, total comfort, and structural resilience.
The Hemp Abode building envelope system bridges advanced European building science with strict American building code requirements. Developed to protect structures with breathable minerals, smart detailing, and natural materials, this hybrid system completely eliminates the need for synthetic weather-resistive barriers (WRB), housewraps, or toxic chemical treatments. By utilizing the natural, high-performance properties of hemp fibers and mineral-based plaster chemistry, our wall and roof assemblies establish an uncompromised defensive envelope engineered to mitigate extreme environmental hazards—including devastating wildfires, moisture accumulation, mold growth, thermal instability, and destructive pest infestations.
Overall Hemp-Wall System Performance
Overview: A European-inspired, American code-conscious hybrid wall building system. It combines sustainable, natural materials with advanced building science to eliminate the need for synthetic weather-resistive barriers (WRB) or housewraps.
Key Features
- Vapor-Open Layout: Allows walls to breathe and dry naturally in both directions.
- Weather-Resistant Armor: Durable, low-maintenance mineral exterior sheds bulk water and resists wind-driven rain.
- Pure Integrity: Engineered with 100% non-toxic, sustainable, and renewable materials completely free of VOCs or off-gassing.
Fire Performance
Overview: Engineered with dense, multi-layered mineral-based protection to significantly reduce structure ignition potential and slow flame spread in wildfire-prone environments.
Key Technical Data
- ASTM E119 Wall Rating: Certified 1-Hour Fire Resistance Rating based on tested assembly guidelines.
- ASTM E84 Surface Burning: Class A Fire Rating across all individual core layers. The exterior mineral coat, hemp panels, and HempWool® register a Flame Spread of 0; Smoke Developed ranges strictly from 0 to 10 depending on the specific component.
- Code Compliance: Designed in explicit alignment with NFPA 1144 standards and fully complies with California Building Code (CBC Chapter 7A for wildfire exposure, Chapter 14 for exterior walls, and Chapter 7 for fire-resistance-rated construction ).
- WUI Zone Performance: Purpose-built for Wildland-Urban Interface (WUI) compliance to resist direct flame impingement, limit flame propagation, and lower ember ignition risks.
Breathable Mold and Mildew Performance
Overview: Protects indoor air quality and structural envelope integrity by utilizing entirely vapor-permeable materials that naturally resist organic growth by design.
Key Technical Data
- ASTM D3273 Mold Resistance: Achieved a perfect 10 Rating—the best possible score, confirming zero fungal or mold growth.
- Alkaline Protection: Features an inherently high pH balance to create a localized environment hostile to mold, mildew, and bacteria.
- Moisture Smart: Functions as a dynamic moisture buffer, allowing water vapor to safely pass through and dry out in either direction instead of trapping destructive liquid water.
Insulation and Thermal Performance
Overview: Delivers industry-leading insulation paired with natural thermal mass capacity to regulate indoor climates, completely stabilizing temperatures year-round.
Key Technical Data
- R-Value Efficiency: High thermal resistance of R-4.0 per inch delivers exceptional resistance to heat flow.
- Wall Assembly Rating: Delivers a total profile performance of R-32 at an 8" total thickness.
- Roof Assembly Rating: Delivers an enhanced performance profile of R-40 at a 10" total thickness.
- Thermal Capacity: Dense natural structure acts as a thermal mass that absorbs excess heat during peak daylight hours and slowly releases it when external temperatures drop.
Pest Resistance Performance
Overview: Provides a long-term structural defense against common household pests and destructive insects naturally, eliminating the need for toxic chemical treatments.
Key Technical Data
- Natural Deterrent: Bio-based composition natively contains organic plant compounds (terpenes and phenolics) that actively repel insect activity.
- Zero Food Source: The dense, mineral-rich core is texturally hostile, offers absolutely no food source, and is far too dense for chewing, burrowing, or nesting material.
- Proven Mitigation: Natively discourages common structural threats, including termites, carpenter ants, cockroaches, beetles, silverfish, spiders, mice, and rats.
Mineral Finish System Performance
Overview: Features a highly breathable, ultra-durable exterior plaster coating system that forms a permanent molecular bond with the underlying hemp composite panels.
Key Technical Data
- The Silicification Process: Potassium silicate chemically reacts with minerals and natural magnesium inside the hemp panel, fusing them via an insoluble silicate matrix into a singular stone-like substrate.
- Zero Delamination: Will not peel, flake, crack, or chalk over time; its physical surface hardness and abrasion resistance increase as it ages.
- Vapor Permeability (ASTM E96): Delivers an exceptionally breathable rating of 25.3 Perms, letting indoor moisture vapor escape freely while acting as a barrier against wind-driven bulk liquid rain.
- Premium Composed Materials: Formulated with zero plastics—blending pure earth elements like marble dust, diatomaceous earth, hydraulic micro-cement, and 3 mm chopped basalt fibers for optimized tensile strength and impact protection.
The Future of Natural Building
By uniting advanced material properties with strategic wall architecture, this complete framework offers an enduring roadmap for building safety, operational efficiency, and low-carbon longevity. From the foundational defense of Class A fire component design to the long-term molecular durability of the silicon-bonded finishes, these performance matrices establish a verified alternative to traditional, synthetic envelopes. Investing in the structural integrity of natural thermal mass capacity, permanent alkaline mold suppression, and chemical-free pest deterrent systems ensures a highly resilient, toxicologically clean footprint optimized for generations to come.