Crawl Space Ninja Show
Welcome to the Crawl Space Ninja Show with Michael Church, where we break down the real fixes that make your home healthier. Each episode covers practical, proven ways to improve indoor air quality by addressing the attic, basement, and crawl space — the hidden areas that control how your whole home feels and functions.
Episodes
Are your vapor barriers actually protecting your home? Learn why building code minimums often fall short of real protection.
The International Residential Building Code sets a minimum requirement of 6 mil polyethylene plastic for a crawl space. However, meeting this code standard does not mean you have the best protection for your home. While 6 mil plastic technically satisfies the rules, it is often comparab...
Stop struggling with cold floors despite having insulation. Learn why your home insulation might be failing and how to fix it.
Many homeowners assume that adding material under their floorboards automatically solves comfort issues. However, there is a significant gap between theoretical R-values and actual performance. This guide breaks down the common insulation problems that prevent your home from retaining...
Attic gable vents often cause more harm than good. Learn why these vents can ruin your roof ventilation and airflow efficiency.
Many homeowners assume adding vents improves air circulation, but improper installation creates significant attic ventilation problems. With 20 years of experience, I break down why attic gable vents frequently conflict with other ventilation systems. If you have a mixed ventilation ...
Stop installing powered gable fans until you see how they can ruin your attic ventilation. Learn why this common setup can fail.
Many homeowners install powered gable fans hoping to cool their attic, but this one in, one out configuration often creates more problems than it solves. This video breaks down the physics of attic airflow and why forcing air movement can actually work against your home's natural ve...
Are gable vents ruining your attic ventilation? Learn why mixing intake methods can actually block proper airflow and heat removal.
This video breaks down the mechanics of attic airflow, specifically focusing on the conflict between gable vents and ridge vents. Many homeowners mistakenly add multiple ventilation types, thinking more is better, but this often disrupts the stack effect. We analyze how wind patt...
Is your attic insulation causing higher energy bills? Discover why blocking soffit vents ruins your home cooling efficiency.
Many homeowners struggle with an overheated upstairs without realizing the culprit is poor attic ventilation. This video explains how insulation contractors often inadvertently block soffit vents during installation, trapping heat and preventing your home from breathing properly. We wal...
Is your bonus room over the garage always hot in the summer, even though your air conditioner seems to be working fine? Many homeowners are told to install a ductless mini split, but that may only treat the symptom instead of fixing the real problem. Before you spend thousands of dollars on another HVAC system, it's important to understand why bonus rooms become uncomfortable in the first place.
In this video...
Is your bonus room always hot in the summer and freezing in the winter? Most homeowners are told to add more insulation, replace the windows, or install a bigger HVAC system. Unfortunately, those expensive fixes often miss the real problem.
In this video, I explain the building science behind uncomfortable bonus rooms and show you why air sealing is almost always the first step. You'll learn where conditioned...
You can drop thousands on blown-in attic insulation and still live with drafts, a scorching second floor, and energy bills that refuse to budge. The uncomfortable truth is that insulation is not an air barrier. If air can move through your attic floor, fiberglass will not stop it, it will only hide it. We walk through the one rule that changes everything for home energy efficiency: seal first, insulate second.
Is your finished attic, bonus room, or room over the garage always hotter than the rest of the house in summer and colder in winter? Most homeowners assume they need a bigger HVAC system, but the real problem may be hiding behind a knee wall in the attic.
In this video, Michael Church from Crawl Space Ninja explains one of the most overlooked attic insulation and air sealing problems: open floor cavities behi...
Is your attic hot even though you have ridge vents, soffit vents, or even a powered attic fan? You're not alone. Many homeowners spend thousands on attic ventilation upgrades and still end up with high energy bills, uncomfortable rooms, and overheating HVAC systems.
In this video, I explain how attic ventilation actually works, why balanced airflow matters, and the biggest mistakes I see during attic inspecti...
Radiant barrier can help with a hot upstairs room — but only if the right things are already in place underneath it. In this video, I break down exactly what radiant barrier does, what it does not fix, and why installing it before air sealing, duct sealing, and proper insulation is one of the most common and costly mistakes homeowners make.
I also cover the one situation where radiant barrier makes the ...
Is your upstairs always hot even when your AC is running? You're not imagining it — and your AC probably isn't broken. In this video, Crawl Space Ninja founder Michael Church explains the five real reasons your second floor stays hot all summer long, and exactly what to do about each one.
We cover attic heat and radiant heat transfer, air sealing and the stack effect, leaky ductwork running through hot ...
Crawl space vents don't dry out your crawl space — they make it worse. In this video, Crawl Space Ninja founder Michael Church explains why open crawl space vents cause mold, wood rot, and poor indoor air quality in your home. Learn the building science behind crawl space moisture, the stack effect, and the simple 3-step fix to seal your crawl space the right way.
🆓 Free Guide — Is Your Crawl Spa...
If a contractor tells you 6 mil plastic is good enough for your crawl space vapor barrier, they're either lying or don't know what they're talking about. In this video, I'll show you exactly why 6 mil vapor barriers fail, what it's costing you, and what you should use instead.
📚 Get complete guidance in my Gold Award Winning Book "Crawl Space Repair Myths Busted" (https://amzn.to/3llnB1m)
📥 Download ...
Most people never look in their crawl space, but that hidden space can quietly change the air your family breathes every day. We walk through three practical warning signs you can check from inside the house right now: a musty odor that shows up when the HVAC turns on, hardwood floors that feel ridged from cupping, and a simple humidity test using your HVAC registers.
We dig into why these clues matter and ho...
Basement insulation mistakes are costing homeowners thousands - even when they pass building code inspections. In this video, I reveal the biggest basement insulation problems I see after 20+ years in the field, and show you exactly how to insulate your basement the RIGHT way for maximum energy efficiency and zero moisture problems.
🚨 CRITICAL TOPICS COVERED:
✅ Why building code minimum requirements will ...
There is a confirmed Histoplasmosis outbreak in Tennessee, and many homeowners, chicken keepers, and DIYers don’t realize how easily this airborne fungal disease can be stirred up around their homes.
In this video, I explain:
• What Histoplasmosis is and why it’s dangerous
• How spores live in soil, chicken coops, crawl spaces, attics, and bat droppings
• Why disturbing soil, cleaning coo...
Your home's indoor air is 2-5X MORE polluted than outdoor air - and it gets even worse in winter. In this video, I'm exposing the 3 biggest mistakes homeowners make that are actually DESTROYING their indoor air quality (and one of them, you probably think is helping you).
After inspecting thousands of crawl spaces, basements, and homes, I've seen firsthand what's making families sick every winter. Most people...
Snakes don’t just randomly show up at your house—and they definitely don’t leave just because you spread a repellent.
If you keep seeing snakes around your home, crawl space, porch, or yard, there’s a reason. In this video, I explain why snakes keep coming back, why most snake repellents fail, and what actually works long-term.
We break down:
- What truly attracts snakes to a property
- Why ultra...
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