• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • r ranson
  • Nicole Alderman
  • Pearl Sutton
  • Anne Miller
  • Burra Maluca
  • Joylynn Hardesty
  • Mike Haasl
  • James Freyr
  • paul wheaton
  • Jocelyn Campbell
master gardeners:
  • Steve Thorn
  • thomas rubino
  • Carla Burke
  • Greg Martin

Magnesium Oxide Board

Posts: 2738
Location: Cincinnati, Ohio,Price Hill 45205
forest garden trees urban
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Any body using this?
1/4" x 3' x 5' Green E-Board


I cant seem to find a temperature rating, but the two materials that make up the bulk of it areMagnesium Oxide which melts at 2,852 °C (5,166 °F) ,and Magnesium Chloride which has a melting point of only 714 °C (1,317 °F)

Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
hugelkultur fungi books wofati solar woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
William Bronson : Thanks for sharing this ! Because of the way the interconnected Super-Congromerate Portland Cement / Concrete Industry has tied every thing up
here in all of the North Americas, Alternatives to Portland cement is/are treated as something not to be mentioned in polite society, kinds like people starving / or
Freezing to death living on Social Security!

The Craft even had to come up with a new name for itself " Geo-polymers'', seriously, out side of the University of Alaska Fairbanks, Where all cement is an import item
there is little research being done on Geo-polymeres!

Not so in Europe where after some failures they are now world leaders ! I am actually surprised this product snuck into the market and expect to find it used for lots of
'' -off label- '' uses !

I too would like to know more about this project, and the heat storage and transfer characteristics of this product !

Ant one ? Big AL
Posts: 2413
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Short Answer William B.


Magnesia...and boards, mortars and natural cements have been with us for well over 2000 years...

The magnificent Brooklyn Bridge is built with a local natural cement called Rosendale which is still mined and made by a friend of mine in New York state. This natural cement, far superior in qulity and environmental impact to OPC is a mixture of calcium oxide and magnesia...

As Al has pointed out the "North American OPC industry" is a huge chemical churning lobby machine that is close to "horrid" and misleading about the realities of its products as is many of the "pest control" chemical manufactures and the industries behind them...


I’m tired of walking, and will rest for a minute and grow some wheels. This is the promise of this tiny ad:
Paul Wheaton's Permaculture and Homesteading Stuff
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!