Jill Fehrenbacher

GRANCRETE FINALLY AVAILABLE

by , 11/23/05
filed under: Urban design

When I wrote about the sprayable uber-concrete Grancrete last May, we had enormous response from readers – mostly from people wondering where to get the innovative material. The sprayable ceramic is stronger than concrete and can be used to erect a house in a matter of hours, making it an ideal building material to create temporary shelters in areas of natural disaster. Well, I am happy to announce that Grancrete is finally available for purchase online at Grancrete.net.

Apparently the website has been so bombarded with hits that it has crashed, but a reader, Nick, has commented that he has a phone number / email for anyone interested in purchasing at the following rates:

$22.50 / 50lb bag (covers 15 sq ft)
$20.50 / 50lb bag for orders of 11 pallets or more

Hope this helps!

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10 Comments

  1. Victor Rojas February 16, 2010 at 9:44 pm

    Congratulations

  2. Idaho Grancrete May 6, 2008 at 12:31 pm

    Grancrete has only been available to the public for just over a year and in that time has undergone some major growing pains. For example some of the initial compressive testing data put Grancrete at 6,880 PSI after 28 days under the original mixing instructions. Now with lessons learned and a better way of mixing Grancrete is now getting 12,590 PSI after only 3 days. Some valuable installation lessons learned are to mix Grancrete by hand with a drill mixer at a very high speed slowly adding the powder to the water. The amount of water used in the formula is very key to the final strength. The best performance comes when 18 to 22% water is used by weight on the “PC” formula and down as low as 11% on the “B” formula. We have also found that mesh is another key component to preventing check cracking. Currently the color fades during curing under direct sunlight. If used outdoors or where sunlight will affect the final color we recommend using a synthetic finish. There are still more lessons to be learned from Grancrete and the best way so far has been on the ground by people who recognize Grancrete’s ultimate potential in changing the way people build. Grancrete is moving in the right direction and has produced some beautiful homes, countertops, faux walls, fireplaces, bathrooms, floors and even as a fireproofing for steal. We feel that the surface of what Grancrete is capable of has only been scratched. We have a lot of on the ground experience with Grancrete and appreciate people like Plaster Jon who are willing to give Grancrete a chance and are sorry that things didn’t work on that projec. If you have any questions please feel free to contact us at info@brownhomes.org or visit us on the web at http://www.Brownhomes.org

  3. plaster jon December 29, 2007 at 7:06 pm

    I have worked extensivley with grancrete in exterior installations. My background is in stucco systems. What I have found is the product doesn’t fully live up to it’s claimes. we have had problems with cracking, color fadeing and delamination. I feel there needs to be more true testing in different enviorments (not a lab). We have also encountered problems with Grancrete standing behind the product the way we feel they should. I have a 13,000 sq. ft. project that is half finished and is stalled until spring in hopes that Grancrete can figure things out. Even with the problems my self and the homeowners hope to be able to continue to work with Grancrete but if we can’t get answers form them on why we are haveing the problems we will be forced to go back to synthetic or conventional stucco. we have been consulting grancrete before and during the project to apply the material the way they suggest.

  4. jessica March 27, 2007 at 5:55 pm

    I have a few questions, if any one knows…
    what is typical R-value
    how toxic is the grancrete
    does is sit on a typical footing with rebar?
    how does it repond in floods or high water saturation.
    thanks

  5. crystal le January 27, 2006 at 1:39 pm

    please send me information on how this is constructed!! any info will be really appreciated!!

  6. Aurora January 21, 2006 at 8:05 pm

    As of 01/21/06, the Grancrete website appears to be working again – http://www.grancrete.net – and the contact info for the company appears at http://www.grancrete.net/contact_12.htm .

    Does anyone have any info to post re: U.S. building codes and obtaining permits for a Grancrete home? Thanks!

  7. IJA December 30, 2005 at 6:32 pm

    would this work with polyurethane sprayed on foam (after it hardens?
    iamargo@hotmail.com?

  8. Aaron Schmits November 30, 2005 at 1:06 pm

    Hi,
    Just wondering who Nick is, and if the phone # for the company selling Grancrete can either be posted or sent to my e mail address. Much thanks, Aaron

  9. sam shumake November 26, 2005 at 5:48 am

    Please inform my ehat sort of a spray system is used
    inorder to apply Grancrete.
    Thank you

  10. Carlo November 24, 2005 at 2:59 pm

    For those interested in seeing the application there is a downloadable video at the following url:
    http://www.anl.gov/techtransfer/Available_Technologies/Material_Science/

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