Veteran-Owned · Carbon Negative · All 50 States
America's Authority on Healthy, Non-Toxic Homes
Most homes are built with materials that off-gas toxins for decades. Mr Hemp House™ is changing that — connecting diagnostics, GaiaCrete® insulation, non-toxic materials, and certified contractors nationwide.
From assessment to installation — one company covers every step of building a healthier home.
✓ Takes 3 minutes · ✓ 100% Free · ✓ No account needed
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
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 |
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.
The Mr Hemp House™ Healthy Home Ecosystem
Beyond insulation — a complete system for creating the healthiest possible home in your area. From assessment to products to education.
Healthy Home Assessment™
Free digital assessment — scan every room for mold risk, air quality issues & insulation failures. Get your Healthy Home Score™ instantly.
Start Free AssessmentMr Hemp House™
America's #1 hemp insulation installer. GaiaCrete® hempcrete alternative installation, professional assessments & healthy home consulting serving all 50 states.
Visit Brand HubMHH University™
Want to learn more — or contribute to the science? Courses, certifications & research on hemp building, healthy homes & sustainable construction.
Explore CoursesMrEcoHome™
Eco-friendly home products marketplace — non-toxic paints, sustainable materials, air quality tools & healthy home essentials. Coming Summer 2026.
Shop Eco ProductsHempBuild Global Pro™
Free AI hemp building advisor — get instant answers on hempcrete, GaiaCrete®, building codes, costs & project planning powered by ChatGPT.
Try Free AI AdvisorThe Poisoned Home™ AI
AI companion to the book "The Poisoned Home" — ask questions about indoor toxins, mold, VOCs, and how to protect your family's health.
Ask About Home ToxinsIs Your Home Making You Sick?
Hidden toxins in your walls, furniture, flooring and products are affecting your family right now. Take the Healthy Home Assessment to get your personalized score and AI-powered action plan.
ItemScan™
Scan any product in your home — furniture, cleaners, paint, flooring — and instantly see its toxicity rating, harmful chemicals, and safer swaps.
RoomScan™
Walk through your home room by room. Our AI identifies hidden hazards — VOC emissions, mold risk zones, formaldehyde sources, and EMF hotspots.
Health Questionnaire
Answer targeted questions about your home's age, materials, ventilation, and symptoms. Get a personalized Healthy Home Score with an A–F grade across 12 categories.
Takes 5 minutes • Get your Healthy Home Score instantly
Professional Indoor Air Quality Testing
In-Home Healthy Home Assessment with Lab Testing
Professional indoor air quality testing, EMF measurement, water analysis, and mold inspection — with lab-verified results and a personalized non-toxic renovation plan from certified experts.
What's Included — Air Quality Testing, Mold Inspection & More
Lab-Tested Air Quality
Test for VOCs, formaldehyde, mold spores, and particulates — then eliminate them with Gaiacrete™ and Hempcrete solutions.
Mechanical Systems Audit
HVAC, ventilation, and ductwork evaluated for efficiency and contamination with natural upgrade recommendations.
Moisture & Mold Remediation
Replace toxic barriers with breathable bio-based wall systems that prevent mold naturally.
Insulation Replacement Plan
Swap toxic spray foam or fiberglass for Gaiacrete™ and Hempcrete, hemp fiber batt, or mycelium.
Cleaning & Product Detox
Audit every cleaning product, detergent, and personal care item — replace with non-toxic, plant-based alternatives.
Bedding & Linen Assessment
Evaluate mattresses, pillows, and linens for flame retardants, formaldehyde, and synthetic off-gassing. Replace with organic hemp & wool.
EMF & Electronics Protection
Measure RF radiation, dirty electricity, and magnetic fields. Install shielding paint, hardwired networks, and filtration.
Water Quality & Filtration
Test for chlorine, fluoride, heavy metals, and microplastics. Recommend whole-home filtration systems.
Detailed Lab Report & Action Plan
Prioritized room-by-room report with before/after projections and material sourcing from Mr Hemp House™.
Healthy Finishes & Coatings
Natural lime plasters, mineral paints, and non-toxic sealants recommended for every surface in your home.
What You'll Receive
- Room-by-room toxin identification
- Laboratory air & material testing
- EMF radiation measurement & mapping
- Water quality analysis
- Cleaning product toxicity audit
- Bedding & mattress off-gas evaluation
- Mechanical systems evaluation
- Indoor air quality score with lab results
- Personalized material recommendations
- Cost estimates for healthy upgrades
- Priority action plan from certified experts
Coming Summer 2026
For homes under 2,000 sq ft. Includes in-home visit, laboratory testing, mechanical evaluation, and your full personalized report with actionable solutions.
Larger home? Email us or call (740) 300-1565 for an estimate.
Or try the Healthy Home Assessment app to get a quick score before your in-home visit
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 the Healthy Home Ecosystem
From diagnostics to installation — everything you need to transform your home from toxic to healthy.
Gaiacrete™ and Hempcrete & Healthy Home FAQ
Frequently Asked Questions
Ready to Build Healthier?
Join thousands of families choosing non-toxic building materials and healthier living spaces. Start with a free assessment.
Assessment · GaiaCrete® · Non-Toxic Materials · Certified Contractors — all from one company, nationwide.