Super Insulated Walls on a BUDGET?!? | Double Stud Walls Explained

I got more out of this one video than I did from dozens and dozens of other videos. The price breaks are fantastic! You just saved me days of work. Please do more.

I could be wrong, since there are so many different materials involved, but I think the double wall system also allows for more acoustic insulation. That may be a consideration for some people, particularly in an urban or busy suburban area.

Great stuff as always. Double walls also provide a huge reduction in sound transmission for those in noisy neighborhoods. If maximum thermal efficiency is the goal, then double walls are practically impossible to beat. However... the labor costs are a HUGE factor here. The cost to install exterior EPS/XPS will be drastically cheaper than having a crew frame out double walls and the extra details for fenestrations. And for most areas of the country, the difference between R40 (R21 cavity + 4" of rigid foam) and R60 might not even be noticeable. You'd probably be better off putting that extra money into upgraded windows and doors. Building double walls with double-pane windows would be pretty pointless, for example.

I haven't watched any other of your videos but this single handedly caused me to subscribe and and see what else you got. Absolutely amazing video.

I was able to understand everything in this video thanks to your vocabulary and delivery of information. This video is incredible! Great job

Neat stuff! We added 20 inches of insulation outside our log cabin, and to avoid the 'tunnel effect' out of the existing windows, we flared out the window openings horizontally at 45 degrees. The very thick walls then don't block your view!

This is some of the best and most concise advice I’ve found online. Very helpful work here sir.

Outstanding! Thank you for the clarity of presentation, the walkthrough on the details and the cost breakdown.

Well done! I built in1986 , staggered 2x4 stud walls 5” apart with 2 r19 fiberglass batts. 1 disadvantage is if or when mice get into the wall cavity they can travel freely. Otherwise I would do it again!

I’d be curious to know how the cost of this compares to ICF?

I was warm and cozy just watching this video.

Interesting presentation, thank you. Also my compliments on your details and thorough walk-through.

I would love a video on leaving rafters exposed and insulating outside of the roof. We haven't figured out best way or a way we like yet. Being able to leave rafters exposed with roof board saves finishing money.

I'm totally sold on the double wall design. At the cost is daunting. I have to pay for it as I go. I don't have any kind of a construction loan. And I'm on disability so it's limited funds every month.. my idea was to put up a steel building, like a pole barn, and then frame up a house on the inside. Because I can do that out of the weather. And I can also leave a big enough walkway all the way around for maintenance on the inside of the pole barn. Not your typical construction project LOL. But doing it that way it gets me out of the weather, and I can put it together one room or wall at a time.

Wow! What an awesome video! Thanks so much for sharing your expertise! It’s given me a lot to think about for when I start the build on my lot here in Texas! 🤠

I was building one of double wall house. Same idea but just regular vapor barrier (polyethylene)inside and regular membrane outside. Wood siding. Blown in cellulose insulation. So many moments about moisture removal weren't addressed a way video suggest. But it has continued insulation through gap between wall and ventilation in attic, so in theory moisture can get out this way, not horizontally, but vertically.

this is a great video with clear explanations and great illustrations/ cost basis. would love to see more

Great video, I'm looking to build a home in Calgary in a few years so this was insightful. I will be watching more

Love the content! Best explained engineer YouTube channel I wish you would’ve added to this video how to do the roof/ceiling installation detail design

You know what I would love to see you do? A similar video on the all-out best wall assembly you can imagine, disregarding budget. Joe Lstiburek has a brief mention of the "institutional wall" but really doesn't go into details. I'm curious what something like that would look like. Basically infinite budget, but using actual building materials (no stuffing theoretical aerogel in the wall or something like that).