Відео

Great video! I hope to tackle a similar project in the next few years. Huge benefit knowing I'll be looking at ~$70k for a slightly smaller home. Question for you on your numbers. Something doesn't quite add up for me. Your build (before solar) is (151-68=) 83 GJ/yr more efficient than the reference house. Your energy savings add up to (7+3+16+4+22+20+6+8+24 = ) 110GJ/yr. Seems to be a 27GJ/yr miss match. Would you be able to check on where the error came from (... including if it's my own math). Cheers.

You loose most your heat out your ceiling and windows.. so pointless investment

i live in the SF Bay Area. Good weather. I have a 1903 house that was uninsulated. So I insulated it and added 3.9 kW peak of solar, that's 11 panels. As I am under NEM 2.0 I won't need a battery for 18 more years as I am grandfathered in and can use the grid as a battery. I made all of $199 dollars last year. I expected my bill to go down, but not turn negative! And the house is all electric: heat pump heat and cool, heat pump water heater, induction cooktop, etc. Surprised me... pleasantly. I should note that almost all of my power comes from renewables: wind, solar, geothermal and hydro. Did you know that California is the greatest producer of geothermal energy (from boiling hot brine) in the US?

Simple answer is no, you cannot power your home with strictly solar.

Someone has to have the storage and over production to meet the 4 months of winter loads. The only known way is with fuel making. This system is NOT valid and should NOT be getting any money from the grid, nor credits. Go 100% without grid or just stop lying.

No, it cannot. You have to have a grid connection. The battery alone would cost more than the house.

I shall leave a comment. I like solar energy. We need some kind of physics revolution to find a better way to store energy. I am in favor of the green energy known as Nuclear Power.

2:38 You have literally created an inferno situation. That open space from the crawlspace up the outside wall into the attic is a chimney during a fire and no way will it pass any building codes in most of the civilized world. At a minimum, it would require a fireproof drywall firebreak at the bottom and top between both exterior walls. Thumbs down on the video for not warning viers of the danger.

Pretty cool 😎.

Use transportation model

Why not offset the studs to get a 7 inch thermal break?

A 2x4 is 60% the cost of a 2x6 but you're using twice the number of 2x4 studs so how does that end up cheaper? What am I not understanding?

I dont think your intro music is loud enough. You should turn it up more.

does this also mean no more holes in the studs for electrical wiring? and, receptacle wire can come up from the ground straight into the blue box’s punch out tabs???

Its to high, how u will wash big dogs?

Where’s your fire blocking..? This has the same fire risk as the old balloon framing systems 😮

If the secondary studded wall is not structural then could it effectively be put at 20 oc and use a denser drywall product to still get the same thermal break reducing the number of studs and fastners needed for the interior wall since it is simply holding dry wall or interior wall finish products.

Your 2x4 studs should be staggered/offset between the interior and exterior walls.

Great idea, but for my old 1890s house, im already hurting for space when it comes to living room, dining room and kitchen. On a newer build, i would love to try this, but unless you have that extra 6 inches, i rather keep that extra 6 inches in my living room.

Using OSB, shame on you.

Another ignorant idea.

I don’t trust U already ~ and im only 30 seconds in ~ I build for a living ..

Just build a house in a house in a house $$$$$$$$$$$$$

Plus you get to live in a super comfortable house and not burn as many hydrocarbons. You should also consider whether the cost of energy will be higher or lower in the future years. Net zero means you don't pay for electricity regardless of what the price is. Theoretically these benefits will add to the resale value of the house as the next owner inherits them.

Great video, Ill use this info in planning my first home.

nice presentation! sounds like CANADA from the accent and I visited there seen 7 window pane so must get cold.... burr... in that case maximum design fun of interiour buildings for people to last the long winters... -tibor

This is such a stupid idea!

Staggered 2X4 (with 3" thermal break) studs for extra sound deadening, if needed. Rock wool on the outer and Pink insulation on the inside.

Calgary's premiere net zero builder huh? The double wall can be found in builders magazines from 70 years ago... The key difference is they staggered the studs for minimum of 8 inches of continuous insulation... Not three. This company needs to hire engineers that are practical. Looks like bottom dollar materials as well, pink insulation, obs, bad install as well, squishing the insulation through your 3 inch gap ain't right.

How do you deal with a fire break in a wall?

You guts use OSB Iam checking out early 😢

About half the comments are from people who have built this way and know what they're talking about. The other half are people who either don't know or don't care what plastic products do to their family's health - in regular life and in a house fire. Plastic is not a wholesome material to include in our homes.

Start by having your studs offset. When they're lined up with each other, there's only the middle insulation between one stud and the other. If you offset the studs so those on the outside are half way between those on the inside, you have a lot less thermal bridge development.

Every home and business should install a rain water collection and storage system along with solar panels. Even in areas where rain is infrequent it is crazy to waste the little rain that does fall and waste it. We need to stop planting green lawns and switch to local native plantings around homes. It is crazy to plant lawns and build golf courses in dry desert areas. We waste too much water and electricity. the future is electric. Wind and solar energy along with electric vehicles are the future. Stop using fossil fuels. There is a climate crisis.

Large roof overhangs add beauty and protect the doors, windows and siding from rain and sun damage. Architects need to include larger overhangs in their plans and drawings.

If you are using a double stud wall, why not use 2x3?

Should frame out side insulation then styrofoam then insulation

Look into Structual Insulated Panels, SIPs are faster, no wood, fireproof, hurricane proof waterproof all insulated in one step.

It wasn't point out in the video but if you stagger the inside and outside well so that the studs are not in the same plane and the blocking is not in the same plane as the blocking in the outside wall, then you have even greater isolation between the lumber in two walls than the 3" gap between the interior faces .

Over the last fifty five years I have been in construction I have seen many new ideas being done. Each idea comes then goes, then comes again. Glad to see the merry go round of ideas still turning

Nascor walls are the best in my opinion, no thermal break and uses styrofoam. Very good for northern climates

Only problem, it's against code. Fire can engulf the house before you know what's going on.

Please do an update of utility costs after 3 yr,

I saw this demonstrated as a system at a NAHB convention about 28ish years ago. It seems so obvious and brilliant for cold climates. My sensei Russ was obsessed with energy efficiency. His house is a pair of earth sheltered domes, connected. Kind of genius.

How does triple pane casment windows perform vs triple pane eauropeon windows? Is there that much of a gap?

Per G/J saved in one year? Most ppl own homes move than 1yr… I’d run the numbers at 5&10 years as those are more realistic than 1yr.

So, basically, at least 20% higher material cost. Labor cost increases dramatically as well. Also, I'm betting you have code issues structurally.

How strong is this wall compared to 2x6 during a hurricane, tornado or earthquake? Thanks. 🙏

I thought second stories had to be built upon a 2 x 6 wall.

Why didnt you use thermal wrap before plywood?