Hemp and Hempcrete | Show & Tell S1 Ep9

Hemp has long had to live under the stigma of cannabis created by some bad guys long ago. But thats a story for another video. This video looks at hemp and hempcrete and discusses some of the benefits of growing hemp and building with hemp hurd that locks carbon into structures like houses.
All the research was done by myself from peer to peer sources and verified many times using hands on work and online research. Feel free to comment, correct, and importantly encourage the hempcrete community and maybe one day hemp can be a tool in capturing CO2 and locking it into buildings as a way to mitigate some of the challenges that climate change is presenting us today and into the future.
Want to learn more about building with hemp? Head to the Hemp Building Directory at www.hempbuilding.au
#hempcrete #hemplime #hemp #sustainablebuilding #ecobuilding #hempbuilding #hemp+lime #carbonneutralbuilding
#passivedesign
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It’s been brought to my attention that some of the information I have presented needs clarification.
- Hempcrete doesn’t turn to stone or petrify, even though the lime itself is getting harder as it absorbs CO2. Petrification is the process of organic matter being replaced over time by minerals to form stone, usually minerals washed in by water. The hemp in the hempcrete is still hemp no matter how old it is, and this is just as well as if the hemp did turn to stone we would just be living in a stone building a few years down the line, with very little insulation value. It is common for hempcrete enthusiasts to use the term petrification, but it is misleading.
- We should be careful too when we say that you cannot get mould in a hempcrete building. You certainly can get mould in a hempcrete building. This is usually just after the construction period during the drying process, but can also occur around window reveals where poor detailing has been carried out.
- Concrete has significant compressive strength and it easily qualifies as a structural material without rebar in it. Rebar ads tensile strength.
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Hemp: The natural way to build by Architect Dominique Hage shorturl.at/wyz39
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About Jeremy Thomas of www.environmentarian.au
Jeremy Thomas is a Building Designer and the founder of startup Environmentarian.au. After a colourful life the pandemic forced a career shift and re affirmed personal beliefs about taking care of our planet and the environment with a more socially conscious approach. Building causes massive amounts of CO2 and has a huge waste stream. Minimising CO2 primarily and waste secondarily are goals at the forefront of Environmentarian.
“You can’t stop progress but you can make it more sustainable”
Jeremy Thomas | Environmentarian : Sustainable Design
Connect on Instagram - / jeremy_thomas_bd
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Imagine all my energy and grit had a financial backing and instead of time being consumed by generating income to support myself and my daughter (pay the rent and bills) I was able to pour all my unbounded positive energy into projects that have positive impacts for the environment and living things on this now fragile planet. Imagine. Or become a supporter on Patreon and let’s make this happen…
www.patreon.com/user?u=369668...

[@JeremyThomas_Environmentarian]

It’s been brought to my attention that some of the information I have presented needs clarification.
- Hempcrete doesn’t turn to stone or petrify, even though the lime itself is getting harder as it absorbs CO2. Petrification is the process of organic matter being replaced over time by minerals to form stone, usually minerals washed in by water. The hemp in the hempcrete is still hemp no matter how old it is, and this is just as well as if the hemp did turn to stone we would just be living in a stone building a few years down the line, with very little insulation value. It is common for hempcrete enthusiasts to use the term petrification, but it is misleading.
- We should be careful too when we say that you cannot get mould in a hempcrete building. You certainly can get mould in a hempcrete building. This is usually just after the construction period during the drying process, but can also occur around window reveals where poor detailing has been carried out.
- Concrete has significant compressive strength and it easily qualifies as a structural material without rebar in it. Rebar ads tensile strength.

[@tanjakosanovic1034]

I've been living in my Hempcrete house since 2020 with my son and we love it !

[@CASTELLANAful]

bravi ed unici thank you for italy

[@BennyHarry]

Thanks so much for this. Would love to build with hemp.! It is the future!

[@21stCPH]

Great informative and helpful presentation.

[@JeremyThomas_Environmentarian]

Glad you enjoyed it!

[@markgreen493]

Great video, many thanks

[@JeremyThomas_Environmentarian]

Glad you enjoyed it. Thanks for the comment.

[@FirstnameLastname-bp5cm]

Curious if there’s any more remodel/building content in the works? Really enjoyed the previous build series

[@JeremyThomas_Environmentarian]

Thanks mate, and yes, I am editing the next videos now which will be rolled out over the next month or so...

[@gregogrady4962]

Lots of people remain confused about hydrated / dehydrated lime.
:)

[@JeremyThomas_Environmentarian]

And it actually has heaps of other names depending on the country and use! A bit of a slip of the tongue so nice to see my correction was noticed. Thanks

[@zhuliu]

Could shredded cardboard or sawdust be used instead of hemp hurd?

[@JeremyThomas_Environmentarian]

There's people trying it with sawdust but it doesn't work as well as hemp. Hemp has a high silica content (think silicone) so it sticks together more readily with the addition of lime and water.