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new green building material

semar's picture

Just want to share this info with you

check this website     www.hempcrete.ca

this home has toxic free walls. The walls are exterior walls, act as insulation, need no vaporbarrier, no drywall.

Appearantly there is already another home build in the US - of course with the usual bureaucratic issues.

They are making inroads in Europe

It would be nice if they (post #194351, reply #1 of 12)

It would be nice if they explained what it was.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

new building materials (post #194351, reply #2 of 12)

check on the net under    hempcrete  and read the various articles from the UK and the US

Did you see the slidepresentation of   the house they build on Bowen Island

  Hempcrete From (post #194351, reply #3 of 12)

 

Hempcrete

From Wikipedia, the free encyclopedia
 
Construction block made with hemp

Hempcrete is a mixture of hemp hurds and lime (possibly including sandpozzolans or cement) used as a material for construction and insulation.[1] It is marketed under names like Hemcrete, Canobiote, Canosmose, and Isochanvre.[2] Hempcrete is easier to work than traditional lime mixes and acts as an insulator and moisture regulator. It lacks the brittleness of cement and consequently does not need expansion joints.[2]

However, the typical compressive strength is around 1 MPa[3], over 20× lower than low grade concrete. This means that Hempcrete walls should be used together with a frame of another material that supports the vertical load in building construction. Hempcrete's density is 15% of traditional concrete, as well as carbon negative.[4] The strength and flexibility means that hemp foundations are resistant to stress-induced cracking and breaking, even in earthquake-prone areas[dubious – discuss]. The building material also is self-insulating; resistant to rotting, rodents and insects; and fireproof, waterproof and weather resistant.[5]

Hempcrete can also absorb CO2 gas. 165kg of CO2 can be theoretically absorbed and locked up by 1m3 of hempcrete wall over many decades.[6]

Pipes can be made out of hempcrete, and they too have greater flexibility and greater elasticity than those made from conventional materials[citation needed], and they are resistant to cracking. Stones can also be made out of hemp by wetting the stalk's cellulose, and forming it into a hard black rock, which can be cut, drilled, cast, carved or formed into any shape.[5]

YAY!  I love WYSISYG editing!  And Spellcheck!

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  I wonder if there is any (post #194351, reply #4 of 12)

 

I wonder if there is any danger of the firemen getting the munchies, if one of those places catch on fire ?

 

;o)

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It's a small world. Until you have to walk home...

Los Angeles general contractors (post #194351, reply #5 of 12)

I too saw many posts and pictures in wikipedia on this web site.

Hempcrete is a mixture of hemp hurds and lime used as a material for construction and insulation.

selfish spam link removed

This is one example link i have posted here.

 

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Yeah, if your place catches (post #194351, reply #6 of 12)

Yeah, if your place catches fire the fire dept comes and throws more fuel on the blaze, then stands there breathing in the smoke.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

I see a few problems with (post #194351, reply #7 of 12)

I see a few problems with acceptance of this at the moment:

1.  Unless they build and demonstrate a shearwall like structure or method with this, it's not going to be allowed where it would do the most good.

2.  Unless it can be grown somewhere near hear (like quarried gravel), it has to be transported thousands of miles.  Even the lime binder looks like it has to be transported from England.  This seriously cuts back on the "greeness" of it.

3.  "It gets stronger/absorbs CO2 over time."  We need quantification.  If this stuff can absorb tons of CO2 over its life... then isn't your foundation supporting more weight as it ages?  That seems like an important variable!  If it gets stronger over time, I'd like to have a graph of that the I can give my engineer.  Maybe the house needs a shearwall the day it's built, but solidifies enough after 30 days it can be removed.  Or diagonal braces - whatever.

4.  Why couldn't Douglas Fir chips be used, or any other kind of wood chip.  One of the videos stated that hemp was much better than other sources... well how much better?  DF is better than Southern Pine, but not so much better that they ignore the local resources.

YAY!  I love WYSISYG editing!  And Spellcheck!

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SIP green building material (post #194351, reply #8 of 12)

Structered insulated panels(SIPs) are a new generation composite building material for eco friendlyconnstruction. SIP panels benefit from the unique characteristics of composites the simple sandwich panel forms a strong insulated panel for building walls, roofs and floors for sip homes or commercial buildings.

Roderick (post #194351, reply #9 of 12)

Are you associated with the sip supply industry?

I mention it because your post looks alot like this-a blurb from an internet supplier............

 

 

R-Control Structural Insulated Panels - What are Sips

R-Control SIPs or Structural Insulated Panels are a 21st century composite material that provides the benefits of insulation and structural performance in a single building product. R-Control SIPs consist of Foam-Control® EPS (expanded polystyrene) insulation laminated with structural adhesives to oriented strand board structural sheathing. R-control sips benefit from the unique characteristics of composites – the simple sandwich panel forms an amazingly strong insulated panel for building walls, roofs and floors for sip homes or commercial buildings.

 

 

If so, how do you back up the green part?

Seems the production of polystyrene receives some press that isn't so green.

thanks.

 

 

 

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A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


I'm really trying to figure (post #194351, reply #10 of 12)

I'm really trying to figure out what these spam posts are about.  That post obviously says nothing.  It's link was to a wiki page.

I think what we are see is trial run passes by natural language bots to see if they will pass muster.

YAY!  I love WYSISYG editing!  And Spellcheck!

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Paul (post #194351, reply #11 of 12)

When someone from an industry comes in here it would be nice to draw from their knowledge.

If just a spam attempt-too bad there's no virtual dunk tank where we could work on our pitching.

 

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Why should anyone believe you (post #194351, reply #12 of 12)

Why should anyone believe you when you don't know your tail end from a hole in the ground.  SIPs are not in any way "new" -- they've been around for 40 years at least.  And it's reasonable to question how "eco-friendly" they are, due to the chemicals used in construction.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville