North Carolina · IECC Climate Zone 3A-4A · Mixed-humid, coast to mountains
Healthy Homes for North Carolina — Flood Rebuilds to Mountain Radon
Virtual Home Health Score assessments statewide. GaiaCrete™ detailed for North Carolina's Zone 3A-4A range and coastal high-wind requirements. Founding Mr Hemp House® dealer territories open by ZIP code.
Hurricane and inland flooding
Eastern North Carolina has taken repeated hurricane rainfall and river flooding, and rebuilt walls often trap the water that follows.
Mountain-county radon
Radon potential in North Carolina's western counties is markedly higher than on the coastal plain, and basement construction increases exposure.
Minimum-code Piedmont growth
Rapid Piedmont construction produces tight houses with undersized ventilation, concentrating VOCs from new finishes and furnishings.
What Climate Zone 3A-4A Means for North Carolina Homes
North Carolina covers Zone 3A on the coastal plain through Zone 4A in the Piedmont and colder mountain counties. Hurricane landfalls and inland flooding have repeatedly hit the same eastern communities, while the mountains bring freeze-thaw and radon-prone geology. The Piedmont's fast growth means a lot of new stock built to minimum code.
North Carolina State Building Code: Energy Conservation Code
North Carolina maintains its own code volumes adapted from the I-Codes, with coastal high-wind requirements in the ocean hazard zones.
Start With Your Home Health Score in North Carolina
Digital Home Health Score screening is available nationwide. In-person Professional Healthy Home Assessments are not yet scheduled in North Carolina. Contact Mr Hemp House® for current product, dealer, consultation, and installation availability. Availability varies by market.
Home Health Score
A free screening that scores your home across indoor air quality, moisture and mold risk, building materials, and ventilation — so you know where to look first.
Healthy Home Assessment
A professional walkthrough of materials, moisture conditions, and ventilation, delivered as a prioritized action plan. Screening and guidance — not a medical or diagnostic service.
One part of the platform
GaiaCrete™ Hempcrete / Hemp-Lime Building Materials in North Carolina
GaiaCrete™ is Mr Hemp House's hempcrete / hemp-lime building material alternative. It is used for new construction, retrofits, and insulation upgrades as one part of the Mr Hemp House® platform, alongside the Home Health Score and Healthy Home Assessment.
- Thermal planning reference R-2.5+ per inch
- Class A surface burning characteristics (ASTM E84) — material behavior, not an hourly assembly rating
- Alkaline mineral composition may be less conducive to some biological growth conditions
- 100% Biobased Carbon Content (ASTM D6866-22)
- Vapor-permeable, hygroscopic, no added VOCs
- Net carbon sink by design
Actual thermal performance varies by formulation, density, moisture content, installation method, and complete wall assembly. Final whole-wall thermal performance depends on the complete assembly, including material density, framing, finishes, thermal bridging, moisture conditions, and installation.
Be the First Mr Hemp House® Certified Dealer in North Carolina
North Carolina has no certified dealer yet. Founding dealers get territory priority, training, and direct GaiaCrete™ supply as the platform expands.
Claim the North Carolina territoryCredentials Behind Every North Carolina Project
Mr Hemp House® was founded in 2018 in Orlando, Florida.
Veteran-Founded, Veteran-Owned
Founded and owned by a U.S. military veteran.
SBA VOSB Certified
SAM.gov Registered
Active registration in the System for Award Management.
IMPEL Cohort
DOE / Lawrence Berkeley National Laboratory Innovation Program cohort.
VIP Procurement Cohort
Veteran Institute for Procurement graduate.
DOE Zero Energy Ready Home Partner
U.S. Department of Energy Zero Energy Ready Home program partner.
Beta Analytic Verified Testing
ISO/IEC 17025-accredited testing — 100% Biobased Carbon Content per ASTM D6866-22 (Certificate #531872642609133657, October 2022).
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