Roger,
That limestone is quite common if you can find it it may be easier to replace.
The tighter you can get the crack the better.
If it were on the floor with a couple of hundred sq ft it would get lost but that single piece is the issue.
Ever repair a saddle with a break like that,unless it is really tight it will show.
I would push the stone together if possible making the crack hairline or as thin as will allow.
Then use high temp cyanoacrylate to spot bond the sections together. Once you have the two pieces locked together you can support them and continue the repair. The goal is to get the crack together as tight as possible.
Use a tarp to protect from drips.
Using a flowing glue either polyester or epoxy inject the glue in to the crack from behind(you can buy syringes for this)(or bribe someone at a local drug clinic-just kidding)
There several ways to finish this. As John suggested by drilling a hole and injecting some glue in or notching out the back and glueing in a stainless rod. Bonstone has some flowing clear epoxy injectors.
Then fill face with polyester or epoxy ,sand flat and finish. 
 
Seems a lot of work for a crack that might show.
 


On Tue, Nov 5, 2013 at 4:53 PM, Scott Wilson <polishedrock210@aol.com> wrote:
Just curious,why polyester and not epoxy? I owned a commercial /charter boat in the keys over twenty years,and did tons of fiberglass work over the years,polyester has a fairly low melting point and burns like crazy
Just asking
Blessings
Scott Wilson 
Wilson Stoneworks Inc 

Sent from my iPad

On Nov 5, 2013, at 1:46 PM, "John Freitag" <jfreitag@thestoneandtileschool.com> wrote:

Roger,

I would use a polyester resin, to do the repair not an acrylic. The propping up should work but when you remove the 2x4 what’s going to hold the piece in place?

You need to attach the piece you are going to prop up with the 2x4 to something. If you cannot get any glues behind the stone you may want to drill a small hole into the stone and into the sub straight and inject some glue or epoxy into the hole to help hold the piece in place.

 

 

John E Freitag

Director

The Stone & Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

 

<image001.jpg>

 

www.thestoneandtileschool.com

 

   

 

From: Roger Konarski [mailto:qm144@yahoo.com]
Sent: Tuesday, November 05, 2013 1:50 PM
To: Stone and Tile PROS Technical Support
Subject: [sccpartners] Fire Place Repair

 

I need to do repair on a fire place marble, please see attached picture. I was thinking about propping up the broken pieces with 2X4 and filling the crack with tinted knife grade acrylic. My question is, will heat affect the acrylic? Also what do you think about my course of action to fix the problem.

 

Thanks,

Roger @ Restoration Stoneworks

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Stu Rosen
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