New Hampshire · IECC Climate Zone 6A · Cold, granite-belt
Healthy Homes for New Hampshire — Granite Radon and Deep Winter
Virtual Home Health Score assessments statewide. GaiaCrete™ built for New Hampshire's Zone 6A heating season, with radon and well-water risk flagged in every assessment. Founding Mr Hemp House® dealer territories open by ZIP code.
Granite-belt radon
New Hampshire's bedrock produces elevated radon in both soil gas and drilled wells, and tightening a house without a ventilation plan can concentrate it.
Deep-winter heating loads
Sub-zero stretches in the North Country pull heat through settled cavity insulation and leave cold interior surfaces where moisture condenses.
Private well and rural water quality
Most rural New Hampshire homes are on private wells with no mandated testing, so arsenic, radon, and bacteria go unmeasured for years.
What Climate Zone 6A Means for New Hampshire Homes
New Hampshire sits squarely in Zone 6A with granite bedrock underneath most of the state. That geology drives some of the highest radon potential in the Northeast, in both soil gas and private well water. Long heating seasons push homeowners to tighten houses, which raises the ventilation stakes.
New Hampshire State Building Code (RSA 155-A)
New Hampshire adopts the IBC/IRC and IECC by statute, with amendments issued through the state Building Code Review Board.
Start With Your Home Health Score in New Hampshire
Virtual Healthy Home Assessments available in New Hampshire. In-person coverage expanding.
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™ Insulation & Building Solutions in New Hampshire
GaiaCrete™, a hempcrete alternative, is Mr Hemp House®'s bio-based hemp-lime building material — used for new construction, retrofits, and insulation upgrades. It is one offering inside the platform, alongside the Home Health Score and Healthy Home Assessment.
- Thermal performance R-2.5+ per inch
- Class A surface burning characteristics (ASTM E84)
- Mold-resistant at pH 12+
- 100% Biobased Carbon Content (ASTM D6866-22)
- Vapor-permeable, 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 New Hampshire
New Hampshire has no certified dealer yet. Founding dealers get territory priority, training, and direct GaiaCrete™ supply as the platform expands.
Claim the New Hampshire territoryCredentials Behind Every New Hampshire 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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