Hempcrete home Queenslander retrofit. How to style. S1 Ep5
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- čas přidán 12. 11. 2022
- In this, longer and more details based video, I present the retrofitting of a Queenslander style house in the Northern Rivers region of NSW. Ft. Environmental Scientist Adam Abbott
This is a very important project in regards to sustainability. The main components of the house, the footings, structural framework and roof are all in good condition being structurally sound and of a good size and layout for a family to live and thrive in. But as with many houses built in Australia there was little consideration of thermally controlling the internal areas considering fairly mild weather, cheap power, lax building standards in regards to the thermal envelope (insulation and sealing) and the idea that building was cheap so 'lets knock up some houses now for people to live in an we'll deal with anything later'.
This means there are 1000's of houses around Australia with little insulation or proper sealing or other passive design principals regarding shading by eaves and thermal mass. Which means it's hard to maintain the temperature at a level comfortable for humans in both summer and winter. In summer we crank the aircon and in winter we turn on a few bar heaters and maybe put on a jumper.
A good article about this can be found here.
www.theguardian.com/commentis...
So what makes this a very important project is that we are using a fantastic framework for a house, and therefore not doing a knock down and re build, so limited new materials need to go into making this house good for another 100 or many more years.
Some internal walls were re arranged to allow for a more open plan style living. The wiring was completely re-done for safety reasons and to bring it inline with modern expectations. Some plumbing was done regarding placement of the kitchen. Upgraded flooring and roofing, including insulation is part of the project. A deck facing the Western view with an awning to protect from the harsh summer sun will complete an indoor/outdoor forward lifestyle house.
Additionally the experienced and eco conscious owner builder opted for up-cycled doors and windows framed by locally sourced timber.
The hemp bast comes from just a few hundred kilometres away (close by Australian standards). The sand and water from the region. The lime binder I am not sure about but I intend to find out!
Hemp grows quickly whilst sucking in CO2. When turned into hempcrete the drying and curing process continues to suck in CO2. And then the hempcrete slowly carbonate to stone over many years so gets harder and harder all whilst sucking in CO2 from the atmosphere. This makes hempcrete a carbon negative building material.
Combine a carbon negative building material into a house that is already built and you have a carbon negative family home that is super well insulated so will take very little external power to heat and cool the spaces.
Thats what makes this project very important for everyone on this planet.
We can grown the hemp and use it to thermally insulate the 1000s (probably 100s of 1000s) of badly built houses around Australia limiting our need for new materials and fossil fuel power needed to thermally control the internal space of the house.
Take a peek and feel free to reach out to us with any comments and questions.
#hempcrete #hemplime #hemp #sustainablebuilding #ecobuilding #hempbuilding #hemp+lime #carbonneutralbuilding
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About Jeremy Thomas of www.environmentarian.au
Jeremy Thomas is a Building Designer and founder of startup Environmentarian.
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.
I, Jeremy, forwent celebrations for his 44th birthday to work on a hempcrete house and meet some people working with hemp.
“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 a project that aims to create an example of how a food forest and eco dwelling can solve perhaps some of the worlds problems. Imagine. Or become a supporter on Patreon and let’s make this happen…
www.patreon.com/user?u=369668... - Zábava
Thanks for watching! And to clarify a point I make a few times about the curing of the hempcrete over time I need to clear up that the process of the hempcrete sucking carbon into the walls is called carbonisation - not petrification or petrifying.
Thanks for the video mate. Very interesting material and process.
@@dartology no worries. Thanks for the positive comment!
Hemp retrofits are the remodel of the future! Heck yeah. Nice work fellas
Thanks buddy!
6:30 min. The cement is only to get it harder. The sticking is done with the lime.
This is actually insanely good. Not only does it last way longer than concrete, but it's also a renewable resource and good for the environment though at the rate we're f****** up the environment. I don't know if little things like this is going to help
Thanks solarwind for your comment! But we gotta try hey!?
And from small things big things come. I made these videos late 2022. Now I’m building a Hemp Building Directory www.hempbuilding.au with a famous Building Designer and within 2 weeks we have designers and architects, builders and installers, engineers and consultants all signed up. This should be good for the nascent hemp industry.
Next we are involved with Professors at Syd Uni ag institute.
The ball is rolling and thanks for giving it a push with your comment!
We need to be building with bamboo, hemp, and wood to remove as much carbon as possible from our atmosphere. These building materials should be made compulsory in earthquake zones like Turkiye.
I'm of a thinking "better to do anything then nothing at all", if we don't do anything then nothing will change and it can get even worse, at least we try
(?
Materials should be supplied in hemp mesh reusable bags and sent back to supplier
Ideas man! Have you got some for sale that you can list on the Hemp Building Directory?
@@JeremyThomas_Environmentarian I don’t personally but a good conversation to have. Might do some research on them. So good seeing a building product tick all the boxes
Ok experiment with a concrete additive. Do the bugs like it and dies it decompose over time.
Hi, great work! The hemp is really amazing. Maybe I got this wrong but I heard sand shouldn't be used in this mix or maybe it is when you only use hemp + lime as a plaster rather than building a wall? Thanks a mill.
Hi Julien, thanks for the comment and glad you like the videos. I've seen issues with sand mixed in walls and other walls that perform better due to the extra thermal mass. But I think 'no sand. is now best practice...
@@JeremyThomas_Environmentarian Thanks a mill for your thorough answer! All the best.
Well detailed, I have few silly questions. I need to retrofit a wooden/timber wall, please guide about the construction technique/detailsrequired to place hempcrete as insulating material between this wooden/timber facade and internal wall.
Hi Akash, thanks for commenting. That's more of a bigger question. If you want 15mins free consultation reach out to me on jeremy@environmentarian.au and we can go from there....
So water,hemp hurd, lime and sand only? I am confused by these companies selling expensive binders. Can you kindly elaborate?
The basic idea is that the binder is an engineered hydrated lime binder made mostly from lime but there is a small percentage of other elements to increase its performance - but I am no engineer - so do further research if building with hemp.
So do you also do all the interior walls with hempcrete as well or just the exterior?
Beautiful wall. Fine work. Aside from aesthetics, does the hemp wall provide a function as an internal wall? Will this wall serve as a thermal mass? Wonderful work here.
Hi Sean, yes, hempcrete has both insulation and thermal mass properties. So the thermal envelope of the room, the house, will be managed passively thanks to the hempcrete. Sound conditioning in the room is also amazing with no reverb/echo.
Love this - can you hang up photos frames etc on the hemp walls or how do you do that?
Hi there, great question! You have to locate internal studs. Or use this method.
czcams.com/video/wiKZo7Z7uoE/video.html
can you have a house with balcony if you are building with hempcrete?
Any design is possible. I’m standing on the balcony in the first shot. Adam Abbott is standing on the balcony for his interview. Balcony’s are an integral design feature of Queenslanders as they regulate the heat especially during summer.
@@JeremyThomas_Environmentarian that's so good to know, thank you for the answer!!
Hello, I live in Qld and would like to see some hemp houses up close, meet with residents and builders. Daunting as i am a hermit 😂😂 How do i start?
Well commenting here a a start. The hemp community is very friendly. There are workshops that would be good to attend so you can get hands on with hempcrete and meet other people in a welcoming environment. Check out www.hempbuilding.au and reach out to the businesses in your area. Enjoy!
Where did you buy the hemp hurds?
I am not sure where it was sourced from however there are plenty of suppliers listed on the website I run hempbuilding.au/suppliers/
Do you have any estimate on how much the walls would weigh?
I'm wondering if it would be too heavy to retrofit a manufactured home with?
It's a very light weight material. But that's the kind of question to run by a structural engineer, preferably one that has experience with hempcrete.
Approximately, how many pounds of hempcrete was utilized in this home? Also, how does the river sand contribute?
Sorry I don't have the exact amount but it was about 3 pallets - you can see them stacked in the video. The river sand adds thermal mass but isn't used in all hempcrete mix recipes.
@@JeremyThomas_Environmentarian Excellent, with those details, I can make an approximation of how much I need when comparing the square footage of my future structure with the one in the video. Thanks!!
if hemp was available in my area I would love to do this. I'll probably end up using sawdust in stead.
saw dust can work but hemp has a high silica content which means it sticks together better then other organic materials
It is also not available around here, (or if it is I am unable to find it) and to get it would be more expensive then just using standard building materials.
@@erikzorger3311 for now the initial cost of hempcrete building can seem expensive. But when you factor in thermally controlling the spaces over the 100 plus years of the building and the fact the much less energy is needed to heat or cool these spaces then there is a factor that could help balance out the expense over the longterm.
@@erikzorger3311 In Australia for many years we had a hurd supply issue. We were importing from France and other countries. For many the import cost was worth the value of the product considering they were building a legacy for the future...
@@JeremyThomas_Environmentarian not when it comes to either getting it or eating. I halfto make it to tomorrow before I worry what will happen in a week.
It's "Tig" from Sons of Anarchy.😁
Surprised to see the hemp wrapped in plastic 😢
Surprised why?