Veteran-Owned · Carbon Negative · All 50 States
America's Healthy Home & Hemp Insulation Professionals
GaiaCrete® hemp insulation is carbon negative, mold-proof at pH 12+, fire-resistant up to 4 hours, and zero VOC. We assess your home, supply non-toxic materials, and connect you with certified contractors — nationwide.
Assessment · Materials · Installation · Education — one company, every step.
📞 (740) 300-1565 · ✓ Serving all 50 states · ✓ Carbon negative building
619+
Homes Evaluated
1,579+
Products Evaluated
94%
Risk Detection Rate
Veteran Owned
U.S. Military
Carbon Negative
Building Systems
50 States
Nationwide
4.9 / 5
47 Reviews
Healthy Home Assessments, GaiaCrete® Hemp Insulation & Non-Toxic Building Materials — All 50 States
Mr Hemp House™ helps homeowners, builders, and contractors eliminate toxic building materials and replace them with healthier alternatives. From diagnostics to installation — we cover every step.
Your Home May Be Making You Sick
The EPA found indoor air is 2–5× more polluted than outdoor air. New homes can be 5–10× worse. That "new home smell"? It's a cocktail of formaldehyde, isocyanates, and hundreds of VOCs.
90%
of time spent indoors
$168B
annual health costs from indoor air
72M
homes with mold problems
24/7
continuous toxic exposure
Spray Foam Insulation
Isocyanates & flame retardants
Engineered Wood & OSB
Formaldehyde resins
Vinyl & LVP Flooring
Phthalates & heavy metals
Paints & Adhesives
VOCs, toluene & benzene
60-Second Home Health Check
How Healthy Is Your Home?
Answer 7 quick questions. Get your risk score instantly.
Do you have spray foam or fiberglass insulation?
The Solution
Replace What's Toxic with GaiaCrete®
GaiaCrete® is Mr Hemp House's proprietary bio-based building material. Carbon-negative, fire-resistant, mold-proof, and built to last 100+ years.
100% Non-Toxic
Zero VOCs, zero off-gassing, zero chemicals.
Fire Resistant
Up to 4-hour fire rating — no toxic fumes.
Self-Regulating
Naturally controls humidity and temperature.
Mold-Proof
pH 12+ makes mold growth physically impossible.
Conventional vs GaiaCrete®
| Feature | Spray Foam / Fiberglass | GaiaCrete® |
|---|---|---|
| Off-Gassing | Formaldehyde for 20+ years | Zero — 100% non-toxic |
| Fire Safety | Burns & releases toxic fumes | Up to 4-hour fire rating |
| Mold | Traps moisture → mold growth | Impossible at pH 12+ |
| Lifespan | 15–25 years, degrades | 100+ years, gets stronger |
| Carbon | High embodied carbon | Carbon negative |
| Indoor Air | Degrades air quality | Actively purifies air |
GaiaCrete® Performance Specifications
Every claim is backed by testing. GaiaCrete® is our proprietary hempcrete formula — engineered for superior performance over conventional insulation.
Mold-Proof at pH 12+
Alkaline environment makes mold growth physically impossible — no chemicals needed.
Up to 4-Hour Fire Rating
Passes fire tests without releasing toxic fumes like spray foam does.
Carbon Negative
Sequesters more CO₂ than it takes to produce — your walls fight climate change.
R-3.5 to R-5 Per Inch
Wall Mix R-3.5, Attic Mix R-4.2, Dense Pack R-5.0 — multiple blends for every application.
Zero VOC Emissions
No off-gassing, no formaldehyde, no isocyanates — ever.
100+ Year Lifespan
Gets stronger with age. No replacement cycles, no toxic waste.
Toxic vs. Healthy — See the Difference
Drag to reveal what's hiding inside your walls vs. the GaiaCrete® difference — hempcrete, lime clay plasters & MgO board. Our Healthy Home Assessment identifies every toxin, then we fix it.
Toxic drywall, fiberglass batts, plastic vapor barrier — off-gassing VOCs
GaiaCrete® hempcrete, lime clay plaster, MgO board — zero toxins
$3,200
saved / year
68% fewer respiratory issues
health impact
Family time up 2.4 hrs/week
happiness
Everything You Need for a Healthier Home
Assessment. Materials. Installation. Education. Mr Hemp House™ is the only company that covers every step — nationwide.
Gaiacrete™ and Hempcrete Insulation Reviews
Real Results from Real Homeowners
Families across America are replacing toxic insulation with Gaiacrete™ and Hempcrete and natural building materials from Mr Hemp House™ — and breathing easier.
"After retrofitting our home with Gaiacrete™ and Hempcrete, my daughter's chronic asthma symptoms disappeared within 3 months. The air in our home feels completely different."
"We were skeptical at first, but the difference in humidity control is remarkable. No more condensation on windows, no more musty basement. Mr Hemp House changed our lives."
"As a contractor, I've seen the damage conventional materials cause. Once I learned about Gaiacrete™ and Hempcrete, I switched my entire business to bio-based materials. My clients are healthier and happier."
The Expert Behind America's Healthy Home Movement
Mr Hemp House™ was founded on a simple premise: every family deserves to know what's in their walls — and to have better options.
Christopher L. Penn — Founder & CEO
U.S. veteran, healthy home expert, and the driving force behind the Mr Hemp House™ ecosystem. Christopher has led the evaluation of 619+ homes and 1,579+ building products for hidden toxins — achieving a 94% risk-detection rate.
His mission: make healthy, non-toxic building materials accessible to every American family — starting with better diagnostics, better materials, and better contractors.
"We're not just selling insulation. We're building the infrastructure for an entire category — healthier homes, from the foundation up."
Read the full story →Veteran Owned
U.S. Military Veteran
IMPEL Cohort
Innovation Program
VOSB Certified
Verified Small Business
SAM.gov
Government Registered
4.9 / 5 Rating
47 Verified Reviews
VIP Procurement
Federal Cohort
Schedule Your Healthy Home Assessment
Book a Healthy Home Assessment with Certified Experts
Our certified healthy home experts evaluate your indoor air quality, building materials, moisture levels, and EMF exposure — then deliver a detailed action plan for a non-toxic living space.
60-90 Minute Assessment
Thorough room-by-room evaluation of your home's health factors.
Virtual or In-Person
Available nationwide via video call, or in-person in select areas.
Detailed Report
Receive a prioritized action plan with material recommendations and cost estimates.
Ready to Take the First Step?
Click below to choose a time that works for you. We'll discuss your home, your concerns, and the best path forward.
The Healthy Building Knowledge Hub
Research-backed guides on indoor air quality, mold prevention, low-toxin building materials, and the science behind GaiaCrete®.
Healthy Homes
Indoor Air Quality & VOCs
Mold Prevention
Explore Hemp Insulation & Healthy Home Solutions
Gaiacrete™ and Hempcrete & Healthy Home FAQ
Frequently Asked Questions
Ready to Build Healthier?
Free assessment · GaiaCrete® · Non-toxic materials · Certified contractors — nationwide.