Best Aircrete EvEr

Aircrete (aerated concrete) has the potential to change the way that the people of the world insulate and build their homes. We have been using our Foam Mate tool since 2018 to build wall panels and create greater efficiency in high heat applications like rocket stoves.
Our current, most exciting project is our Light and Portable Aircrete Rocket Stove. We used this stove in our uninsulated off grid house this winter and this little stove kept us toasty without putting any smoke into the air around our house. It is so well insulated our dogs sleep touching the stove even though the batch box registers up to 2000 degrees Fahrenheit when full of coals and wood.
This stove can be manufactured by anyone with a pop-rivet tool and a bag of refractory mix concrete. Go check out our plans! We are so excited to share the book with you. If you want to join us for live streaming of Darwin doing a weekly walk-through of the book join our Patreon! / honeydocarpenter
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[@Bear-fe8vp]

Glad your back with Aircrete 💙❤💛💜💚

[@bernardflood8289]

Greetings from Ireland. It looks good guy's. Love the intro. It's been raining here non stop since the first week in June, we're starting to think it'll turn to constant rain soon.

[@Theheirheirophant]

Great job! 👏 👏 👏 👏 👏 I'm trying this this match. Thanks for sharing. ❤❤❤❤❤❤❤

[@Buzzhumma]

I put my old bean bag beans in some cement and 5% sand mix and it was about 70 beans by volume and poured a form . I kept it as dry as I could to keep the beans from floating to top and it came out perfect . A 500mm by 500mm panel at 100 thick . It weight around 3.5 kg

[@AndrewHelgeCox]

Were your bean bag beans actual plant beans or some plastic version?

[@Buzzhumma]

@@AndrewHelgeCox I think just polystyrene! Not really strong but perfect as insulation panel between framing !

[@ObedKC]

Long time no see. I miss watching you guys. I'm glad to see you guys again.

[@jrhardy6147]

Glad your still breathing we thought something happened to you. Glad all is well. More videos please.

[@Ian-h9z4g]

By the way thanks for you and your wifes awesome work.

[@leejaylampman2222]

Looks way more manageable. I have been pondering additives as well. Chopped up Polly from my abundance of dog food bags. I'm using latex additive on a sculpture now... has anyone tried latex additives in aircrete?

[@jbman413]

Seems like you two have been working this for like twenty years now. I'm guessing you've come a long way. Pretty cool!

[@lynnsorensen503]

So good to see you! ❤️That sawdust additive looks like a winner. I was playing with the idea of making cob walls inside & outside of a pallet & post frame (got the idea from the palatable cobin guy), then pouring aircrete into the space inside the pallets for insulation. This mixture might be just the thing!👍😊

[@naturalezasimbiotica6047]

That's sound a super nice idea, i love that kind of palletable Cobin...if you wanna continious with a super nice and natural insulation you can easily use the lightened straw, only poured it straw into a liquid clay solution and let the moisture point at press and drop...you have a win win natural insulation material for fill in or even to make some formwork brick or panel like honey do carperter do here but more lighten, isolation, transpiration, healthy, natural and cost effective...blessings

[@dailyrider2975]

So similar idea as hemp-crete with foam using different filler and less filler with more cement. OK. I still like steel studs vs wood, would have the OBS on the inside instead of drywall and cement siding on outside or stucco to make it bug and fireproof. Cool video! Thanks.

[@oakld]

Well, steel or wooden, they're totally unnecessary. Aircrete can be perfectly load-bearing. Not only it's used in Europe for many decades, it's number one material in many countries. My house from which I'm writing has 300mm thick Xella YTONG aircrete (we call it porocrete, or porous concrete) walls, with 160mm EPS insulation outside and inside and outside is render. That's it, no other load bearing members, no OSB boards, no drywall... Actually, you don't have to necessarily insulate aircrete walls - my friend is finishing a new house and he has deep 500mm walls with just render and it suffices even the stricter code up in the highlands where he lives. And we have very strict code compared to US to start with. However, you need a certified product, to use it as load bearing. I hope some of you guys will finally introduce it to the US market. It deserves it. It's no coincidence aircrete became number one material in so many countries. And it's so easy to make the production process. I've seen a video from "company" in some Asian post-soviet place and they did it with similar foam generator and primitive forms and tools. I bet the nearest Home Depot alternative was tens if not hundreds miles away 😊

[@melinda5777]

Hey Y'all, so happy to see this video! It certainly looks different this way. I hope this means more videos to come! Stay Safe, cause I know your gonna be warm!! 🙏❤🇺🇸⛵👣🤙🤗

[@scottheppenstall4550]

Have you considered adding basalt fiber to your aircrete for strength? Can handle high temps so maybe even in rocket stoves? The fibers present in the mix might also improve penetration by waterglass through capillary action. I'm going to do a test stove this winter with it if I can get your waterglass recipe to work for me (I seem to not have the knack for it...its still fighting me lol!)

[@MyLife-lg6tg]

Honey do, why not try to frame the wall lying down, and then pour the aircrete in the wall, let it cure and stand the whole thing up? Seems like it would save some time and labor. Dan S from Michigan and Texas

[@MadRat70]

Yep, would make sense to do at least 4x8 panels rather than these smaller panels. Mixing in sawdust (aka dustcrete) is good for strength. May as well dump aircrete foam for styrofoam. I've even seen shredded tire used. Much lighter and more flexible than aircrete. The one aspect you lose is hydroponic nature of aircrete.

[@folsterfarms]

I wondered the same thing too!

[@Keithzzzzt]

Yes..yes, yes. I thought the same thing. Its how they pour concrete for warehouses. They lie them flat...build them in layers in a form. One on top of another. Plastic inbetween. Then hoist them into place. For aircrete with horizonal pouring and framing you eliminate the slump factor. Its 4 to 6 inches only . The framing is the form. Build on the slab and hoist it into place. A lever, winch , pully system or a backhoe would be all you need. You would just have to build in sections and possibly reinforce. Chicken wire would possibly be sufficient . Why put the cart before the horse? Half the time framing is already done on a flat slab and then lifted into place anyways . It seems like a no brainer to me. But what do I know?

[@manfredcstehnken]

I have you tried buildong with sawdust,im from south africa

[@Jay_the_Caffeinator]

Awesomesauce!! Does this mean you are going to update the Etsy Store PDFs for the Wall Mixture??? Or can we purchase it again at a lower cost? So glad to see a video on YT from you all. I have been curious how you all have been doing.

[@davemiller5875]

Good to see you again. I missed you two. That mix looks awesome. Did the foam you put behind the panel push it out at all after it cured?

[@freddiefamble4774]

Nice. Been studying this aircrete for a while. Could you use hay instead of saw dust? Might that work? Thanks for your work. Blessings!

[@jodyvaillant118]

Does it shrink over time?

[@Ian-h9z4g]

We've done a reasonable amount of mudbrick building just a querie . Wondering why aircrete can't be used as load blocks?

[@gregwalker3540]

Awesome Darwin! It looks like quite a fiberous sawdust... more like wood chips. Does fine sawdust help too or best the chipped type?

[@qnedim3200]

How correct is it to embed organic material into concrete? Won't it rot over time?

[@DocWiggles]

There is iso chanvre (basically french for hempcrete) - which is hemp fibers used in concrete. iirc there is a bridge that is hundreds of years old that still supports the weight of modern trucks. one of the reasons the hemp works (again iirc) is the higher silica content.

[@Dazza_Doo]

Great Question. From my new understand, Soil for Web, the hardness of the wood material isn't able to be broken down by bacteria, only fungi can do this and not all fungi. So when you seal in the wood material the fungi on it will die as they need air and water to live (just like us) This is why we vacuum seal foods, Are we cool or freeze foods because the bacteria either die or become inactive. This is also why plants die in the winter, Because their support system in the roots die first.

[@duanethieme4186]

Happy Birthday Darwin! Glad to see you again, thought something happened to your family. Looks great, so it can also be easily be poured into forms, have you tried other mixes also? How does this mix compare in strength, weight and insulation to your aircrete panels used on the shed? God bless in Jesus' name! Heads up, your website shows "mailing list inactive" on the newsletter after submitting the sign up and on the video "Error occurred".

[@billboehmer350]

Hey Bruce, I could say the same thing, but what I said is true. There could be thousands looking for him.

[@bruceh4833]

There are millions looking for him. They just don't know it yet! Sometime after the lithium shortage wars needing heat and a way to dispose of some toxic materials.

[@kurtkuehnast9226]

😅😅😅😅😅😅😅

[@victoryfirst2878]

HOW will this insulation work inside basement cinder block wall that is 8 feet high and 8 inches wide ??? Thanks 😀😀😀😀😀

[@kalervomakinen2076]

How would I go about making a thick aircrete mix that could be used to trowel onto an existing bare aircrete wall slab ? Would want it to be thick enough so it doesn't just run down the wall but have some hold to grip on when applied. Is this a pipe dream ? Would I have to use paper or tape or something to hold it in place ?

[@rolandoperez3800]

What ratio of cement water and foam did you use?

[@AndrewHelgeCox]

Have you tried using hemp in your mixes?

[@CKelly-d6x]

Have you done any thermal stress testing on your new sawdust enriched aircrete? The non-sawdust aircrete is basically fire proof, so I was wondering if the new mixture remains fire proof.

[@davebeing7402]

It would be very helpful to list the ingredients and proportions that go into your aircrete.

[@unique11124]

There should be a centralized resource.

[@tommysanford586]

I am thinking of placing sheetrock on one side of the block. How will would it stick?

[@mozit6]

Could this type aircrete be used in non-vertical walls or sloped ceiling and roof? What would be the weight comparison to foam boards like polystyrene? Of course assuming that aircretes insulative value per cost including installation is less than polystyrene, etc.

[@tudorgheorghe4532]

Hy guys ! I ve done this 20 years ago Quick important tips! Spray the ingredients sawdust first and then the foam or same time , decrease the mixer rotation and use lither but bigger plates on the mixer .Try to mix very less the materials ! And wuick pour it ! You can add havy wateron your slurry to harry up the setting time Try doing like i ve mention! I m in a fase of demolished my roof all made 20 years ago using method ive explain ! Will work and last at least 40 years ! Be aware that s not a structural !

[@TIMLASHLEY]

What’s the r value and is it still fire proof?

[@SohelMahboob]

Hi, I would like to build walls like fences with CLC in Canada, and small tiny houses. Please let me know, what are the chances of them cracking up and freeze and thaw cycles for longevity.

[@lisareed9296]

hello- how would this work making false brick walls for exterior siding or pouring forms for planters. I appreciate your reply. I know you are a busy family! 🤩🤩🤩🤩

[@oakld]

You can do "any" shape from aircrete, your only consideration is material properties. The two cases you've mentioned are IMHO unsuitable for aircrete, since it's exposed to elements. It's not like it would fall apart, but the material doesn't like it. My wife and ranch girls are using an aircrete block (Xella YTONG standard simple block remnant from the structural walls of my house, circa 1x1x1.5 ft) for about 10 years as a step for mounting horses, so it's outside on the riding range exposed to elements the whole time and all that happened to it is the corners and edges are rounded with about an inch radius. But still, you should consider it's relatively weak material that should be protected from elements. We use it in Europe for decades to build houses and around here it's actually number one material. But you always put at least a render on top of it. Usually insulation and than render.

[@dannydavis7187]

Are you going to sheet rock over that?

[@billboehmer350]

Well, all the more reason for good communication.

[@AndrewHelgeCox]

What's the cost like compared to foam or mineral wool insulation?

[@bruceh4833]

Non-toxic. Which makes aircrete insulation priceless. Foam off-gasses and cannot breath and mineral wool requires a mask during install last time I looked at the packaging.

[@AndrewHelgeCox]

@@bruceh4833 Good point.

[@billboehmer350]

Guys, you are making a big mistake by not staying in communication with those that love what you have done, and are doing. You ought to ask volunteers to send you their email address, so when something is happening, you send one email and it goes to all those addresses. It could say--no show today-, or you could give a specific time for the show on Saturday. To just leave everyone hanging is not right. Just look at all the comments today, lots were wondering what happened to you. This is important because what you have is amazing and wonderful, you started something GREAT!!! and then you just disappear, not right. You also said you have a book of all the mixes, for $25. Can't find it. I find Etsy confusing as there are products there that you have nothing to do with. I just don't get you guys. I have wasted so much time hunting for you guys. And where is the video putting the aircrete in the walls of your new house, and winter is almost here. You had mentioned Patreon but it was confusing, not enough info. Love you Guys, it is broken so please fix.

[@bruceh4833]

Somewhat agree ... but I've learned more from waiting on Darwin 6 years than I've learned from anyone else. 👍

[@AndrewHelgeCox]

Are those panels bearing any weight in this application or is it purely an insulator?

[@bruceh4833]

Panels don't meet weight bearing code for living places. They probably are fine for multiple "storage sheds" 👀, barns, garages, coops, etc. The lightweight metal studs at the box stores are only good for interior partion walls that aren't supporting anything ... unless it's not going to be lived in or collapse on someone else's property.

[@oakld]

​@@bruceh4833Yes, that's the sad part, because aircrete can be perfectly suitable for load bearing. Theremin Europe it's the most popular material in many countries and even small residential apartment buildings (commonly you can see like 4 stories ones) are built from aircrete blocks. The house I've gotten to build about 15 years ago in which I'm sitting ATM has 300mm aircrete walls (from blocks by Ytong). US is waiting for someone to take his/her opportunity and certify a universal load bearing block.

[@JoeBManco]

Have you ever considered using styrofoam in your aircrete?

[@فومبتنآسایش]

👍👍👍👍👍👍👍👍👍👍👍👍

[@00honey000]

Please let us know how you guy’s are doing

[@mchlbk]

But why? Using rockwool or glaswool batts would be easier, insulate better and be better for the environment.

[@carmelahearle957]

I hear many voices. Are you inviting people to come up there and participate in classes or is it just family there to help? I would really enjoy another fire burning stove class but with the new improvements. It'd be great to have a 3 to 7 Day class from start to finish and to be able to go home with a finished stove. Please and thank you. Good to see another video up and everyone fine♥️

[@frankhoffman3566]

not sawdust. It's a hurd of some kind

[@michaelglenning5107]

The coarseness of the sawdust/wood shavings makes me think of cobb construction.

[@roj0088]

Why don't you build your house 100% out of that stuff ?