Crawl Space Encapsulation | Watch Ninjas Encapsulate a Crawl Space | Dehumidifier, Sump Pump, More
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- Опубліковано 16 вер 2024
- Encapsulating a crawl space is hard work that requires special materials and preparation. When doing the work yourself, it could take 5 days to a week or more to complete the job. But for a professional team of experts (like our team of Ninjas) it might only take one or two days to finish.
Today we take you on one of our jobs that we did recently here in East Tennessee. This job was a crawl space encapsulation, as well as a sump-pump and trench install. In this video you'll see the Ninjas do things like cutting vapor barrier, connecting them together with seam tape. Attaching the vapor barrier to the walls, and more.
Don't forget to watch the AFTER video where we show you how the video turned out: • Crawl Space Encapsulat...
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Mailing address: 6011 Ridan Drive, Knoxville, TN 37909
Phone: (865) 659-0390
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I had a 14 hour day completing a vapor barrier before the holiday weekend. It’s way more physical than most would think.
There a few things I would do differently.
1) Always want to have your walls shingles UNDER the floor. This is most important in a perimeter drain system. Don’t want water to get on top of the membrane.
2) I don’t bother shooting the columns, just use tape, pull tight and it’s just as effective.
3) I heard you say that your gravity drain to pump is temporary but let me tell people why you can’t leave it the way it’s shown in video. The drip coming off the dehumidifier in a hose that long, with that little fall, will result in an algae buildup in the lines. Always good to check these lines as they can get clogged up over time. (This includes the 3/8” line that’s attached to the condensate pump that’s should be on all dehumidifiers.)
Overall job looks great! I wish all crawl spaces were this accessible!
What about sand are you talking about roof shingles
I need to send you pictures of my encapsulated crawl space. All done with your advice! Thanks
My crawl was considered a very nice one to begin with. 4’ tall and nice clean sand floor with zero moisture problems. Sump pump is only used when furnace trap fills it or when we drain the entire system when leaving in winter. I sealed all rim joists and penetrations then used 2” foam board around rim joists then resealed. I then insulated the walls with 2” foam board. My last job was to install the vapor barrier as you instruct.
We have a company in Michigan that uses a 120 mill vapor barrier that is proprietary. I figured I’ll ask them a price to finish my job. They’re barrier is awesome as my son in-law has had them do an area in his old farm house. Well the price was $6300 to finish it I may have paid 1/2 of that since the barrier is so awesome but as soon as I got that estimate I politely told them I’ll be ordering from y’all and finishing by myself and wife 😀
I bought all the plastic, tapes etc with leftovers for $900. It took us probably about 10 hours over 3
Days and it looks awesome. I will start today in these cold winter days to go over pillars etc to make it completely encapsulated! I even used those 2”x2” connectable foam tiles to cover them floor since I saved so much $.
Thanks again!!!
Awesome! We'd love to see the pictures and to possibly feature you! You can send pictures through our Ask A Ninja form: crawlspaceninja.com/ask-a-ninja/
My neck hurts from watching this. And the guys move fast. I would be exhausted pretty quickly
Wow thats a tall crall space.
Mine is about the height of a 5 gallon bucket.
Mine too, two cinder blocks high.
My house is slab on grade but for some reason I’m still watching all these videos
Maybe you'll have yourself a home on a crawl space one day! Thanks for watching. 😊
I'm watching an encapsulation video while I'm encapsulating myself haha
That's the right way to do it!
Can you come to Ottawa il and do my crawl space please
Hey Michael! Do I need to insulate the inside foundation walls? Is placing a vapor barrier on the walls enough? I was told it's not necessary to install a insulated foam board behind the barrier.. What are your thoughts? I live in the Nashville area
Wish u guys were in Michigan.. I need work on my crawl space
I wish my crawl space was that big, mine is about 12 inches at some points. At the end of your video you asked "them" to stop making vented crawl spaces. Should I seal up my vents?
I think I got a of slop on my out side pvc 40 would I still need a sump pump if I got an of slop out side love your videos
Hey Gabriel Pigman, Check out this blog we did "Do I need a sump pump?" crawlspaceninja.com/waterproofing/do-i-need-a-sump-pump/
Thanks for watching and have a blessed day
Hello there, had a quick question, at around 6:32 in the video I see you guys use foam board combined with spray foam sealant (Great Stuff I assume). I have a similar issue with my crawlspace where I discovered after i bought the house where they didn't insulate where the ductwork coming from the main part of the house into my crawlspace goes. Would some standard Foam Board (Owens Corning) and big gap filler (Great Stuff) work for that?
Seemed like you had your dehumidifier to close to the side wall in this video. I thought the idea was to have it centrally placed
Yes that would be ideal. The homeowner did not want us using a condensate pump (not sure why). They wanted the dehumidifier to drain directly into the sump pump. That is why we have it so close.
Where can you buy the foam bored y'all are using in the video and as always keep up the good hard honest work crawl space Ninja
Thank you. We sell it out of Knoxville TN. Are you close to us? If not let me know where and I'll see if I can find local place.
Crawl Space Ninja I am between McMinnville TN and Manchester TN
+Arville Noe sorry we are not there yet but hopefully we can expand that way.
It's ok bud
Any source near Newport News, VA?
Im trying to figure out why you would put fiberglass insulation on the sill plate? Rockwool is only 10% more expensive and is impervious to mold and mildew. If it gets totally drenched in water it will dry out and won't become wet cotton candy.
For information on that please feel free to fill out this Ask a Ninja Form here for expert advice! - crawlspaceninja.com/ask-a-ninja/
Thanks ninja for the videos. I'm finishing a 2 year project on my 1200 sq ft pier and beam home in the woods in ny. The home was built in 2005. It originally had treated 6x6 posts directly into the ground for the homes foundation witch had 6 mil stapled to the 6x6 posts. Aftor a number of years, this made some of the posts begin to rot. So I replaced the entire foundation with concrete piers. I then skirted the home with treated plywood and 2x4s...almost like a rim joist with plywood over it, and roofing tin over the plywood. No wood is in contact with the ground. I caulked and taped the seams of the plywood. It turned out great. I removed the fiberglass insulation and I laid my vapor barrier on the ground and taped it to flashing around the bottom perimeter. My question is, do you think I should insulate over my 2x4 and plywood skirting? Or put a good insulation between the floor joists? My worry is trapping moisture against my plywood skirting. Any suggestions for me ninjas? Thanks!
If you previously had fiberglass insulation, replacing it may be the best option for you moving forward. We only insulate the walls for concrete block foundation.
Hey man are you guys located in South Carolina?! I’ve heard of the ninjas in Charleston.. I use to work for Palmetto environmental solutions.. I can do all of what you guys do and maybe even become a part of your team.. I’ve been a ninja all my life.. but never a crawl space ninja! Lol I love the quality that your guys have in your work.. that’s something I was forced not to apply at PES..
I'm sorry but we are not currently servicing any areas in South Carolina. We do have franchise opportunities available if you or someone you know may be interested. Check the description for more details. Thanks for watching!
Do you recommend i seal my vents in my crawl space? I live in Ohio, and lots of rain and my crawl space flooded. Taking steps to stop that. I have a little bit of mold here and there, but no soda blaster and I'm worried my crawl space (wood) isn't dry enough
A perimeter trench and sump pump would help with the flooding. Sealing the vents is necessary to control humidity when you install a dehumidifier. Check with your local code about what ventilation is needed for soil gases.
Do you have to have a sump pump in the crawl space? What is considered "sump pump needed."
Also isn't the encapsulation supposed to keep mold from growing anyways? why have to spray the joist?
Here is a video that talks about knowing when you need a sump pump and drainage system that should help: ua-cam.com/video/DnA07-esYrk/v-deo.html As for treating mold, we like to spray to make sure there are not microsopic growths that we can't see. The dehumidifier and encapsulation will help keep anything from continuing to grow, but we want to take care of anything that's already there. Hope this helps!
Can I install a 30pint dehumidifier from Walmart? If not why not? They are under $200, compared to 800 and up ...
Very good question, the best way for me to answer it is with this video. I have started it where we talk about your question ua-cam.com/video/RB19JtKwKao/v-deo.html let us know if this helps and if you have more questions.
If I am going to spray foam the walls, what’s the best way to attach the plastic 6 inches or so up the wall. Also it’s a 1920’s house with old concrete foundations
I have a tight crawl space, they dug out the foundation, but left most of the dirt in the middle, I would like to encapsulate it, but can't get to most areas , unless your thin as a rail, what's the best solution, dig some of it? out or is there a solution or a video. I'm older and fat, thanks for any info
You could dig it out, but the truth is that the options you might have are depending on teh actual size and layout of the crawl space. if you are within our service area we would love to provide a free quote! crawlspaceninja.com
@@CrawlSpaceNinja thanks for the reply I'm in the Chicago area I'm pretty sure you don't service that far north I don't know if you know of any recommendations up this way of the Southwest suburbs of Chicago, thanks
Great work. You guys don't seem to worry about insulating the perimeter rim joist. Is it because a well encapsulated crawlspace will create a good barrier with the living space?
That is correct
Be aware, Hollow blocks tend to crack using a Hilti.
Can you show soda blasting and where does the soda go? Where do you get the tape and moisture barrier? Do make the crawl space door?
The end of this video shows soda blasting in action. ua-cam.com/video/dcDEb2DqV7A/v-deo.html The soda stays in the crawl space to help deodorize any smells. The tape and vapor barrier are available on our DIY Store: diy.crawlspaceninja.com/. We do not make the doors to sell online, but we do have some videos on how to build one yourself: ua-cam.com/video/_5TGi9MtBaQ/v-deo.html
What is best way to deal with exhaust from dehu. I have Aprilaire 1850. Contractor attached flex hose to exhaust and ran about 20 feet away from dehu. Is this ok?
Should be as long as the area is dry. Sometimes people do that to cut down on the noise.
How do you insulate the underside of the floor when there is no sub flooring? I have an old house where the first floor is what you see from the crawl space. So air can come though the cracks of the boards which lap each other.
Hey James Garrison, Check out this blog we did.
crawlspaceninja.com/crawl-space-repair/insulating-floor-over-dirt-crawl-space/
Thanks for watching and have a blessed day
Please come to my crawlspace in Wisconsin and fix it like this.
Bill Thompson Thank you so much !
@@CrawlSpaceNinja Come to Illinois and do mine.
Thank you! Illinois is in our expansion plans, but we are not there yet! in the meantime we would be happy to help you on your DIY project!
What would you recommend installing on block walls similar to the ones in the video, but an older wall that isnt exactly flat? Its structurally sound but if foam board is installed against it, it would leave slight gaps between the wall and board. Spray in closed cell foam? I recently read that it loses its R value quite quickly. Not sure what route to go.
brad davenport Sometimes we use closed cell spray foam for uneven walls. Its ability to stop moisture and insulate is nice but very messy and doesn't look as nice.
Is there any problem having a studor vent attached to your drain pipe in an encapsulated crawl space?
Hi, can you add a dehumidifier before you encapsulate? Or is that just a waste of time? On a budget and trying to prioritize the steps. Thanks! Al
Yes you can add the dehumidifier before encapsulating. we do it specially when there is mold involved!
I do have moisture in my crawlspace due to a flood that we had in our town. I have removed all insulation and drying it out inside. How do you know if you need a dehumidifier in the crawlspace? I am doing 2" foam boards on the walls, 10-mil plastic down the walls, flood in 10 mil. spray foam in the rim joists. Afterwards, would it be better to test the humidity readings in the crawlspace to see if a dehumidifier is required? If so, what % of moisture must it hit to require one?
I'm sorry to hear about your home flooding! If the humidity levels are above 50-55% you should have a dehumidifier. I would recommend making sure your wood moisture levels are around 12% before spray foaming the rim joist. We prefer using foam board with spray foam instead of just spray foam so it is easier to remove if needed. Here is a video talking about it: ua-cam.com/video/652vY4Gy5vU/v-deo.html
Crawl space ninja
What do you recommend for a foundation wall-installed vent/dehumidifier for a low clearance crawl space of 12-18”?
We actually have a couple different options available at our DIY store: diy.crawlspaceninja.com/fans/ We hope this helps.
I’ve seen conflicting information regarding how to vapor barrier the walls. Do you insulate before the vapor barrier or vapor barrier and then foam board on top?
GREAT question!!!! It is best to insulate/ foam first, and then cover with the vapor barrier.
@@CrawlSpaceNinja thanks
Is there any need to tape/seal the seams in foam insulation if it will be covered with a separate vapor barrier?
What if the company wants to hang the dehumidifier from your joist? I feel like having it on blocks makes more sense
We at one point used to hang them, we stopped doing that and doing it on blocks. It is just a preference, although we do believe blocks work best for our units.
How do you get under hot water tanks and hvac units
You guys do North Alabama? Shoals area specifically. Thanks
I'm sorry, we do not currently service that area (as of 7/1/19). We hope to be able to expand there soon!
Does a condensate pump help the water get to its discharge spot? My clear plastic discharge hose from dehumidifier makes it my sump pump but it's not on a great pitch to drain downward like the one in this video, mine is a little further away. Wondering if the condensate pump will help to make sure the water is making it into sump pump and not backing up back into dehumidifier
Yes, the condensate pump is designed to help discharge the water further away than what a regular gravity fed line can do. If the crawl space we're working on is getting a sump pump, we will always run them to discharge into the sump pump. We recommend these: diy.crawlspaceninja.com/condensate-pump/
@@CrawlSpaceNinja great! I'm gonna order one from you guys. Do you have a video on how to properly install it to a dehumidifier? I have a aprilaire 1820 in my crawl space that I would be connecting it to. Thanks
@@d.r.cuevas4214 We don't have a video, but there is an instalation guide and technical data sheet linked on the product page for you.
Do you seal the cinderblock walls also with the sealer then foam board
No, we do not recommend painting the foundation walls in the crawl space as it can become a food source for mold over time.
Can mice chew through those barriers ?
Sal - Crawl spaces that are not sealed can easily be invaded by insects and rodents. Therefore, installing a vapor barrier should be your first step. Your crawl space will be much less attractive to pests and rodents if you encapsulate it. These uninvited guests are drawn to places with high moisture content. The 20-mil plastic barrier will also prevent pests from entering your crawl space. In the long run, you will also save a lot of money with a thick and durable plastic barrier. Thanks for watching and have a happy & blessed weekend.
walls are too short and the pinch point on the dehu is too sharp, and no inspection gap for pest control
I've heard conflicting info on foam boards. Some say foam boards on the perimeter walls give termites easy access up the foundation. Is that true?
We've not had any experience in this, but in our area in Tennessee building code requires a 3" gap below the sill plate in order for termite inspections.
Can I use vapor barrier between the concrete block wall and the 2 inch Styrofoam insulation boards/sheeting?
We recommend vapor barrier above foam board.
cool
Thanks!
Cost of crawl space ninja encapsulation cost
Thank you for commenting! Our crawl space encapsulation costs depend on the size of the crawl space and the level of work that needs to be done. If you are inside our service area, give us a call to set up a free assessment! crawlspaceninja.com/service-area/
Hey guys, heard you say you are in TN, where? I'm in SWVA. I have a crawlspace that sits on a Shale bank. Only have one foundation vent remaining after previous remodels. There is NO insulation and my house is freezing cold in some areas. Very interested in an estimate to encapsulate.
Not showing how to put up a vapor barrier along the wall with insulation.
Hi I had a dehumidifier and new vapor barrier installed in my crawl space this past summer (2019). My question is when it rains my humidity level rises from around 48% to 65 to 70% while its raining outside then it slowly comes back down in about two days, is this normal? Also the company sealed off all of my foundation vents.
It does not sound abnormal from what you describe, but I would check to make sure there is no water intrusion or make sure that the vents are tightly sealed. Hope this helps!
Is the sump pump necessary for every installation?
Great question!!! The sump pump is only required if you have standing water
@@CrawlSpaceNinja Thanks, as usual, soon after I wrote that I found your video on the subject :-) Love all the info you guys give out. Wish you were in California!
Is there a reason you leave all the debris under the plastic ?
We dont leave debris, but we do not remove rocks just because of timing.
Why did you put the french drain inside the perimeter instead of around the outside of the house foundation? Wouldn't that stop water from getting under there to begin with?
Great job on the crawl space. Do you fasten the membrane to the foam insulation or does it run up the wall 12” and the foam board goes over it to seal off the top?
We take the vapor barrier over the foam board and mechanically attach it to the foundation wall. Check out this video for more information: ua-cam.com/video/0Btc7JxG6Ws/v-deo.html
What is soda blast?
Soda blasting is a way to remove mold from your sub floor here is a link to one of our soda blasting videos ua-cam.com/video/1LNr8lydPhY/v-deo.html
builders should be sued for not including this in the built of the house.
Thanks for sharing and watching, have a blessed day
Do y'all work in NC?
Hi! It will depend where in NC you are located! you can check out our service area page to see if we provide service in your areacrawlspaceninja.com/service-area/
Where is your product line
Our DIY store is located at diy.crawlspaceninja.com Thanks for watching!
Is there anything under the vapor Barrier to keep the rocks and stuff from ripping through?
We offer dimple and felt upgrades that add 5 years-Lifetime on the warranty of the crawl space plastic. Learn more about the dimple membrane here: ua-cam.com/video/UNG43C4--00/v-deo.html