Mold Removal

Unique Crawl Space Encapsulation Request

There are many ideas on what to do and not do when it comes to crawl space vapor barrier, insulation and mold. We had a customer request some not so standard things to be done in their crawl space. Watch Michael explain the risk and rewards for each.

Crawl Space Insulation, Yes or No?

Get a Quote from Crawl Space Ninja –

πŸ‘€ Are you looking for great dehumidifiers to dry your crawl space?
Mold Removal –

Foam Board –

Aprilaire 1820 Dehumidifier –

βœ… Giveaway Video β€œ4 Solutions to Improve Indoor Air Quality” –

πŸ’– 10 Most Popular Videos –

πŸ”΄ Most Recent Video –


Would you like us to provide a quote to repair your crawl space, basement, attic, or duct-work?
Get a Quote –

Would you like to fix your own crawl space, attic, basement, or duct-work?
πŸ”΄ Purchase DIY Products –

Interested in being your own boss by opening a Crawl Space Ninja Franchise?
πŸ”΄ Franchising –

Do you have a question for Michael Church and would like your question and answer to potentially become a video?
πŸ”΄ Ask A Ninja –

Contact us:
Crawl Space Ninja
Mailing address: 6011 Ridan Drive, Knoxville, TN 37909
(865) 659-0390

Indoor Air Quality Articles
Effective Virus Protection by Controlling Humidity –

Can Vapor Barrier Control Humidity? –

Can Fans Control Humidity? –

How Standing Water Affects Humidity –

Crawl Space Humidity Solutions –

Mold Remediation Mistakes – Humidity –

Do Dehumidifiers Make Mold Go Dormant? –

Disclaimer – Please understand that the content on the Crawl Space Ninja YouTube channel is intended for informational purposes only. We make no warranties about the completeness, reliability, and accuracy of this information. Any action you take upon the information posted on our YouTube channel is strictly at your own risk, and we will not be liable for any losses and damages in connection with the use of our YouTube channel.

Related Articles


  1. Question: Does it make sense to encapsulate the crawlspace and install non-insulated AC duct work in South East Coastal Virginia?

  2. Found this video a little confusing compared to what you said in others. Had some questions from this one, you referred to minimizing odors in a sealed crawlspace needs proper ventilation to code, can you please clarify on this? In your other videos it's sounds to encapsulate and seal however this one your talking about ventilation in an encapsulated crawlspace.

  3. Please do a video on Manufactured housing with a belly pad. Does it need to be removed after the crawlspace walls are insulated? Also if the foundation is concrete block piers with a brick single layer curtain between them what is the best way to attach the foam board?

  4. What was their reasoning for wanting to keep the fiber glass? Do they have radiant heat pex piping attached to subfloor? What is your opinion for insulation for homes with under floor radiant heat in regards to condition crawl spaces?

  5. My current "barrier" is under gravel. I bet my contractor that is scheduled to do my new barrier in 2 weeks leaves it, and that would be my suggestion because the amount of effort to remove it would likely not be worth it since it is covered with 2" of gravel. There is no organic material down there since the home is only 4 years old and the space kept clean. I also am leaving the fiberglass since it is above the "belly wrap" (although the wrap has holes in it but I'm hoping for the best). I am having them insulate the block with foam. They wanted to do the rim joists but the rim joists are above the belly wrap, and I decided it was best not to cut into that any more until the humidity was eliminated, so I opted the spend the money on insulating the block (40"). I installed the Aprilaire 1830 and within about 2 weeks had the humidity from literally 99% all the time to in the high 60's. I now have it down to 60% although the dehu runs a lot. I finally got the vents removed and replaced with 8" cinder blocks, which btw was a huge pain in the rear. It took about 1 hour per block (10 of them) and was very hard physically since the blocks had to be inserted from inside the crawlspace because the top row of blocks was slightly covered by the bottom of the siding. However, I was sick of mice getting into the crawlspace through those junk plastic vents. Sure I could have sealed them with foam, but now I hopefully won't ever have to worry about them long term versus foam that could be penetrated by accident or the plastic covers you can get that may lose a seal over many years. Honestly it was overkill, but I frankly was tired of the mice from the last crap job my home builder did on those vents.

  6. I dont have any concerns with leaving the vapor barrier, the insulation would be my biggest concern just for the issues listed. The fiberglass has one benefit of being a sound barrier, but not sure that outweighs the potential cons.

  7. Michael I've got a question for you. The aprilaire dehumidifier that you're giving away, what is the big difference between it and the ones you can buy in say home depot or lowes, portable I think they are called. Thanks!

Leave a Reply

Your email address will not be published. Required fields are marked *