Closed Crawlspace | Finished TOUR

Check out a finished Addison Homes conditioned crawlspace!

#HealthyHighPerformanceHomes #DwellWell

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[donnagoode]

Man!!! Such an excellent educational video! I just love the look of a raised foundation. I certainly would want one like this! 🔥🔥🔥

[autocompletellc]

Man, would I’d love to have a crawl space like that. I’d put a tv down there 😂.

[livingingreenvillenc]

the amount of work yall put into yall crawlspaces is amazing! You must be building million-dollar homes over there!

[squeekhobby]

Excellent demo and construction standards. Seen very few builders thinking on building science rather than on kitchen bathroom and living space aesthetics

[DavidODuvall]

After seeing the majority of homes here in Missouri being designed and constructed improperly, it's nice to see one that is built right.

[loridave]

Good content. I did a very similar job in coastal Washington state. Looked just about like this. I used 4 inches of foam of the wall insulation. 2 layers of 2” each. I removed the batting between the joists. When winter came the crawl was quite cold. And this required xtra heating for the living level above. I guess the ground was a huge heat sink. I did not install a drain as u did. Nice touch on your part.. I used a dehumidifier and had no mechanical air exchange. The humidifier was quite noticeable on my electric bill. I wish I had smoothed the dirt much better before I applied the vapor barrier. You did better than I did in this regard. My job was a success, but on next crawl I will carefully grade the dirt, insulate the dirt floor, buy an April Air dehumidifier, install your drain valve, and realize I may need an air exchange and that I may need to insulate the underside of the floor joists.

[josephjohnson]

I wish you were here in Houston, Texas. I need you ASAP ‼️

[jean-clauded]

Thank you for the idea regarding the RADON vent. I am coverting a vented to conditioned crawl space, and adding such a vent is a great idea.

[daves]

Well done video! One of the most important, yet most overlooked, requirement when conditioning a crawlspace is to ensure there is insulation on the exterior of the foundation and in particular the rim / edge joists. This is especially true if you are using batt insulation on the interior. I found this out the hard way as all my rim joist have suffered significant moisture damage. The theory is that when its cold outside the warm moist air of the crawlspace condenses on the rim joist. Then the batt insulation soaks up that water and exposes the rim joist to long term moisture. By placing insulation on the exterior foundation wall / rim joist you "warm it up" so that the interior side of the rim joist never reaches the dew point and moisture will not condense.

[ParkBarlton]

Depending on how cold it gets in your climate, the batt insulation can cause condensation on the rim joist in winter. Any batt insulation is vapor and air permeable, so you have equal dewpoint on either side of the insulation, but a much colder temperature at the wood. If the wood dips below the crawlspace dewpoint, it will get wet. The outside foam can help by raising the temperature, but it needs to be thick enough to always keep that rim joist will above the dewpoint.

Put another way: If you treat the crawlspace as conditioned, indoor space, it needs to have the same vapor control measures that rooms in the home would have. So if your climate requires a vapor retarder, you need either batt insulation with a continuous vapor retarder (extremely difficult to do properly in a crawlspace) or foam board.

And this kind of issue is exactly why I chose not to attempt a retrofit encapsulation on my home's crawlspace. The only material that makes sense, at least in a retrofit, is foam, and I've seen what ants can do to foam! I'll be going with an ATMOX system instead, basically treating the crawlspace as conditioned independently from the living space (using fans and dehumidifier) based on dew point.

[stevenn]

Great videos on closed crawlspaces!! - thank you. You mentioned you are in a high termite area. Are the I-Joists treated? You mention in a later video that you use OSB on the walls. How does that perform with termites? We are in Hawaii and they want us to use Hi-Bor treated lumber, plywood and treated I-Joists.

[mitchelldavitte]

You show a supply of conditioned air off of the main trunk. Is there a return? Or is a supply good enough?

[blakelongnecker]

Great video! One question. How does the supply air duct eliminate excess moisture in a crawl space? I understand the reasoning for not installing a return duct, but wouldn’t you still need something to remove moisture that will inevitably find it’s why in?

[reggiereseller]

Thanks for the video. When you installed the polyiso foam board, did you apply adhesive or foam BETWEEN the pieces or simply butt them together and tape?

[RT]

I know this video is old, and you might not see this, but I'm wondering if the barrier you are walking on is sitting on concrete, or is it just dirt?

[seanm]

FUN FACT: The homeowners are now living in the crawl space, due to the fact that finances dried up prior to the living space actually being completed.

[yourchannelhasnocontent]

Excellent job. You cover many things most encap companies ignore. Question; What brand water sensor do you use? I'm retrofitting my own crawl space and will be doing something very similar with a floor drain at the lowest spot and would like to remotely monitor any water leak issues. Thanks.

[scrapple]

When you encap a crawl you do you use the white plastic on a concrete pad too. I built 10 yrs ago. Have a 4' crawl concrete floor cinderblock wall. Very dry no water problem but do feel cold and drafts in winter. Looking to foam board this spring but was thinking to do something on the floor too. Can I.

[tdashmike]

You mentioned there is supply air in the crawlspace but where the does the air exit the crawlspace? Thank you.

[brettcox]

Does the passive radon vent have a fan installed? Just wondering if it's necessary. I'd like to use one in my crawlspace.