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What products would you suggest for a foundation like this? I see you have no vents in this wall. How are you going to remove humidity and bad air from the crawl space?

I am getting ready to finish an older unfinished basement. The interior basement walls are raw concrete. What are the best practices? Should I adhere rigid goal boards to the concrete walls prior to framing the interior walls? If so what thickness would be necessary? Wouldn’t there still be a gap between the rigid foam boards and concrete that could allow for condensation? Would a closed cell spray foam be a better option?

I had work done like this in my house. I just had my house (1927 bungalow, 1092 sq ft) insulated. All the old insulation was removed from my attic. Then all the knob & tube wiring was removed in the entire house and all the wiring was brought up to code. Then, the entire house was air sealed, insulation blown back in the attic and exterior walls. A heat sensor was used to make sure there were no bare spots and the few places that needed additional insulation was topped off. They installed a Panasonic Whisper fan in my small bathroom that is located next to an exterior wall. They used metal ductwork to vent to the outside. Even with my old windows installed I can feel the difference. Plus, my house is so small that removing the moisture/hot air is helping to keep the temperature down a bit. It is 80 degrees outside but my house temperature is cooler...no AC on yet. The bathroom previously had no exhaust fan and I am astonished that, upon taking down old wallpaper, that there was no mold. Whoever designed the house was mindful of airflow, so a big window faces the bathroom shower/tub and the bathroom has two doors on opposite sides. This bathroom is TINY so the airflow must have been pretty good. The guys did good work.

these beams is a total disaster

Can I add an exhaust fan duct to an existing dryer ventilation duct?

Thats amazing

You didn’t address placement of the fan and orientation with regards to make up air. You want the fan to draw makeup air across the shower/toilet ideally

6:40 Weak at best.

Great video!! Very informative

This looks amazing -- do you know any builders doing this on the west coast (California)? I haven't been able to find a manucturer serving the West coast but I can't see any reason this wouldn't work.

To avoid humidity in bathroom 1 Don’t run long duct runs 2 avoid poor, cheap airfans 3 avoid small diameter ducts 4 flexible ducts runs instead of hard pipe runs

I’m currently working on a project as a construction inspector and we are performing an under cut due to being near wabash river, thank you! Please do more

What is the make and model of that fan?

Excellent video. Thanks Todd. Question: with a crawl space that deep (high), why not just make the walls a few feet higher and have a basement? Moisture potential? Expansive soils? Budget? Thanks - I'm considering options - crawl space or basement or slab first floor.

Our builder refused to use anything other than flat paint in our bathrooms which was wild to me. Flat paint ceilings and walls and a 50 cfm fan in the 100 sq ft bathroom. The day we moved in we painted all the bathrooms walls and ceilings with satin so at least that's better. It's a huge pain to replace an exhaust fan and I really don't want to walk around on ceiling joists to do so but I do need to go up there and see what pipe they used. I would bet it's the cheapest they could get -_- Once I get caught up on other projects I might go ahead and switch it all out to OUR higher standard.

Great video and explanation. We're in southern Oregon and we have really nasty expansive clay that is dusty like talcum powder in the summer and like quicksand in the winter. I tried amending with with quicklime, and it really helped, but the volume we had to treat made it a huge undertaking. We ended up just using a lot of geofabric and lots and lots of rock. Thanks for sharing this design - very good work.

Why set the tank sideways like that ? What does this system cost ?

What is the brand again. I missed it if you said it. Im already with Tmobile

Are they supposed to run every hour or does it depend on temperate/climate outside?

If you have a 3" exhaust hose, can you use a an adapter for a fan with a larger hose connection?

I need help. My bathroom extractor vent starts to drip brown liquid every few months. My house is new. Bought new in 2022. I have to take it apart and clean it twice a year. What can I do to prebet this from happening? Under the cover there are small dials for time and H% which I assume is humidity. Can adjusting these dials help at all?

How did you frame the crawl access to disburse the weight since you cut out the joist?

Super helpful thank you!

And that drain needs to be dug out along the footer not placed on top of it!!!

I want u here in Vegas.

There are better ways to build a wall. ICFs (Insulating Concrete Forms) are easier to work with, already insulated and poured concrete is far stronger than CMUs. ICFs are better than stick framing too.

From the POV as someone who barely knows construction, my concern with these walls are with how each unit is connected. It looks like it's a combination of good bolting and some sealant. If used in a basement setting, wouldn't the sealant need to be replaced ever so often, and how would you do that underground? Or am I misunderstanding this?

Which model camera is this? Also, did you have to buy any addons?

Why crawlspace instead of slab or basement?

omg!! this is so cool. My property soil is bad (type c), do you have any suggestion? should I pour good soil to the site from somewhere else or build a pricey custom septic system?

How are you sure they aren’t going to spray those cavities with closed cell spray foam? Or Siga Majrex and Mineral wool?

I have exterior foam board around my poured walls? Do I have to put it inside also? 1 year old house. Or is another option to build my walls off of the poured walls a few inches to leave a gap?

Thank you! Could you do a video on how to retrofit if you don’t have flashing currently?!!

I was watching your show about bathroom fans. I would like to know what size of bathroom fan, I should be using for a replacement. I want to replace the bathroom fan because it creates a lot of moles and causes the dry wall and stub to deteriorate. I hope you were able to help me solved these problems

How about spray foam? In Canada (my province anyway) I’m pretty sure we’re supposed to use Vapor wrap between the drywall and framing/insulation?? I’m looking to gut my basement and inspect walls for cracks etc. if all looks well, I’d rather spray foam between the studs for an airtight seal and I assume better R value??

Looks like 4 inch in the video.

How would you suggest I request our builder in upstate SC to do this if it isn't standard industry practice? 😅We haven't signed any contracts yet but I was told we will have to use a crawlspace instead of a slab and we're very concerned about mold growth to the point we may not move forward on the build because of it.

Once I see one of those "all-in-one" showers, like the one behind you, I know it's a budget house. So why wouldn't the fans be cheap?

I like the 6" perimeter block on top, Did the inspector let you install verticle rebar after footing was poured . The 1st. video , there was no verticle rebar coming out of the footing.

Cool fix, I'm surprised you went with corrugated pipe after spending so much money. Why not sch-40/80 kr or sdr 35?

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

Air is a fluid?

We are planning to have a metal roof installed. The roofer recommended we remove and relocate our roof penetrations. This includes a 4” plumbing vent stack and our bathroom exhaust. Our home has a conditioned attic. I have a Broan Nutone 110CFM exhaust. I would like to vent out the gable end. That distance is about 25’. If used a rigid 3” vet would I be successful in eliminating the humidity? If necessary could I add an inline pressure sensitive fan along the run to help move air more efficiently. Thoughts?

What pipe size are you using, 6 or 4-inch?

That looks like a fairly reactive clay site.

How does a sealed crawled space fare when the building is unoccupied, no power, between owners, hard times, etc. Should any crawl space retain the option of venting under such circumstances? If you've ever opened a cooler you haven't used in a while, even washed and in only a couple of days, you'll smell and probably see mold growth.

In Norway (where I live) the outside if the concrete would be insulated (min 1/3 the thickness of inside insulation). Inside the vapor barrier would be put inside the insulation, not up against the concrete wall. This stops warm moist air from the inside of the house entering the insulation so it can’t condense on inside the insulation or on the concrete as it never reaches there. The vapor barrier should be taped so it’s air tight. Seems to work. We opened a below ground wall in our 50 year old house recently and all was dry and in good condition.

So we use Extruded Polystyrene (XPS) insulation board against the concrete wall, then add the stud frame, do we then use fiberglass insulation as well? Or is it enough to just use the polystyrene board?

Noise makers? I thought they were called "Fart Fans". Its a feature.

They could have just used Zip R and avoided the need for all those cap fasteners 🤦🏽‍♂️🤦🏽‍♂️🤦🏽‍♂️