GFRC Thickness

Hello guys I'm wondering if anybody has done a whole piece via gfrc.... liked sprayed the whole thing with no back up coat? (in the traditional sense)

Id like to try to do two face coats then find a hopper gun (if there is such a tool) that will allow me to spray a back up coat with fibers or at least get some scrim down. Would Buddies spray mix be strong enough at 1" thick?

Im just thininking time wise this would be good for me as i have lots to do and ZERO time to do it...almost time to quit my real job..

Thanks Guys

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Permalink Reply by Sean Kimber on July 25, 2012 at 1:47am

sorry ....im doing fire bowls....12" high 24x24

Permalink Reply by Peter Trevisan on July 25, 2012 at 6:25am

Try Brandon Gore,

I know he had a kick ass Gun when he visited us in AUSTRALIA

Permalink Reply by steve millard on July 25, 2012 at 1:34pm
Permalink Reply by Concrete Ideas on July 25, 2012 at 1:58pm
http://concretecartel.com/editions/issue2/the-sawed-off-hop-gun/

This is also from gores site. I have done this to my hopper gun and it works really well. I just spray the backer coat roll it out and spray again till I obtain my desired thickness. As for buddy's mix. I've done one with 1/2 inch at the thickest. It was an 8 foot planter and 18 inches tall. Did half inch total thicknes gfrc and filled it with a yard of dirt. Didn't even flex the thing. So at 1 inch you will have no issues. So long as you follow the w/c ratio and add appropriate acrylic. Hope this helps
Permalink Reply by Sean Kimber on July 25, 2012 at 10:03pm

did you do the planter with just the spray mix and fibbers?

Permalink Reply by Tommy T Cook - AKA, The Gnome on July 26, 2012 at 6:27am

The sawed off hopper gun is a quick, easy and inexpensive way to get the job done.  The Mortar Sprayer gun by www.mortarsprayer.com is another solution, but you need allot of air and it can be messy and also NEEDS to be rolled to get the right compaction.  I also have developed a sprayer for small shops for spraying mist coat and backer.  It is designed to lay the mix up in the proper way, like the GFRC sprayers mentioned above.  Here is a video of the unit.  It will spray Buddy's GFRC mix with no problem!!

http://youtu.be/jLcOt7Y66KY

Permalink Reply by James Gatehouse on July 29, 2012 at 1:50am

I have the gun brandon left in Australia, it helped me smash this up. 9ft x 3ft x 3.5ft high. this is open at the back and bottom,30mm thick FRC used basalt fiber backer. $260 for the gun, a deal !!!.

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Permalink Reply by Concrete Ideas on July 29, 2012 at 4:55pm


Sean Kimber said:

did you do the planter with just the spray mix and fibbers?


Yeah I sprayed the first coat, brushed it out then sprayed the next 2 coats with fibers in it. The only reason I made it so thin is I miscalculated the product I needed for the job and my BR distributor was closed by then.
Permalink Reply by Justin 2stone Brown on July 31, 2012 at 11:59pm

Glad you like it CI.  

Concrete Ideas said:

http://concretecartel.com/editions/issue2/the-sawed-off-hop-gun/

This is also from gores site. I have done this to my hopper gun and it works really well. I just spray the backer coat roll it out and spray again till I obtain my desired thickness. As for buddy's mix. I've done one with 1/2 inch at the thickest. It was an 8 foot planter and 18 inches tall. Did half inch total thicknes gfrc and filled it with a yard of dirt. Didn't even flex the thing. So at 1 inch you will have no issues. So long as you follow the w/c ratio and add appropriate acrylic. Hope this helps

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