Hemp-lime Building Workhop

How to build with hemp, Mario Machnicki takes questions and shows those attending a workshop promoted by Hempfully Green …


  1. The type of NHL is a big factor. 3.5 and 5 is like concrete. They don't tell you that it doesn't breath with those 2 types of nhl. Nhl 2.0 is breathable but I'd rather use high calcium quicklime as my binder. Same type of lime they used for thousands of years. Nhl is simply not breathable. England doesn't even use it due to damp issues on their cathedrals. They had to go back and repoont with high calcium lime since nhl didn't breath. Id imagine it will do the same in Northern climates such as my state. Vermont. Plus nhl is so expensive every mason I know refuses to use it. Id much rather use high calcium lime and hemp shiv.

  2. Great video.
    For anyone watching these days, they tamped too much. It makes a strong wall but much less insulation. Light patting by hand is all it needs.

  3. one problem i foresee is: when you have a (smallish) earthquake, because its rigid it may crack, and you get a crack directly to outside. if the insulation was rockwool it would not crack. I'm thinking of having walls from this hemp and extra rockwool on the outside. I don't know regarding sound. does it reject sound/absorb? I like to make music and i hate gypsumboards, it would be great if it absorbs bass/sound (i can later reject sound -soundproof on the exterior by adding an extra exterior layer using a harder material)

  4. Call the Cops, A Hempcrete Mixer, Just Imagine how much more Hemp will make the POOR Farmer Struggling to get by Growing Coca, Opium. You can't take away what people have been forced to do to Eat without Replacing it with something Better.

  5. We have an old stone house and want to insulate on the inside with hempcrete. Will it still breathe? What about moisture coming in from the outside stone walls when it rains?

  6. This is a wonderful material. I’m so happy and proud that our president now made it legal to grow hemp in the US. Really looking forward to the great things we will be able to do with this wonderful plant now.

  7. I dont like Hemp for us in the U.S.A., It could endanger our politicians and make them obsolete! In the U.S.A. we love our corrupt, incompetent, citizen abusive politicians, and will not tolerate anything that would harm or threaten the status quo of political power, especially if it would make our lives and the nation better! That's how we roll in Merica! And if you try to force it on the U.S.A. we will bomb you and make you tear down all of your Hemp homes, you liberal, socialist wannabe communist!

  8. Good stuff. I think another great option and maybe the next step forward would be to make very large, stackable blocks that you just stack up to make the house. If there were facilities that had forms and mechanized mixing, moving, and tamping this could be done very economically and the quality could be standardized. Engineering (load/flexural/durability) could be "approved" expanding the use in markets where building codes currently do not allow hempcrete. Channels for electrical could be designed into the forms as well as half blocks for end walls and sills/penetrations could be part of the design package.

  9. HEMPsted Long Island used to grow it. Watch Hemp For Victory video. A government film made to rally the people for the war effort. As long as they could make money with it through war, it was quite the plant! #decriminalize This is a good video but not in depth with showing how to mix, explanation of mixing materials with recipe amounts, example of how to mix pigments and the same with the plaster. Disappointing because it seems they want to explain it so that ppl will use them as a contractor, rather than ppl building for themselves. I was just hoping for a more in depth video.

    I am wondering if anyone is out there trying to discover a new blend of the different natural construction materials. I would love to see if Hemp could be ground and mixed in "cob" earth, and combined with the aircrete technique? Would the Hemp act as a binder and bring up the R value of the cob? Then finding a way to utilize the aircrete method, also bringing up the R value, keeping it light and easy to work with, etc.

    Also, instead of cutting notches out in the walls for electric wire, can't insulated pipes be placed inside the framing, and run the electric before the pour; this giving access to wires for for future repair? If you ever had to replace an entire run of wire, you could knot the old with the new and use it as a lead. I never liked Romex Cable due to being able to damage it with nails or screws but I think I would be much more willing to use it if inside piping. I am sure that will bring the price up but it just seems like a better option. He never mentioned plumbing or whether you have to cover any metal that may be inside the walls due to possible condensation build up from the walls transferring moisture, especially types of plumbing etc.

    I guess I need to go to a workshop! LOL

  10. he kinda avoided the timescale question, simply standing on it is different from years and years of stresses from thermal expansion and contraction, and wind stress, etc

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