I am also working on some 100 year old fireplaces in an old mansion that look like they haven't been touched ever. I am dealing basically with a soot/rust problem (see picture below).  There is an iron/steel grate in the fireplace that we removed.  there are many brown spots along the border of the fireplace box.  I suspect the brown spots are rust spots.  We honed the hearth to 50 grit (marble) and treated the spots about 5 times for 5-10 minutes at a time with rsr 2000 rust remover.  They lightened somewhat, but are still there and these won't budge.  as a test i mixed up some poultice with rsr2000, put the poultice under one of Dr. Freds stain sponges and covered with plastic.  in another place I put citrus degreaser/stripper on a sponge to test for soot. I am checking back this afternoon.  Please let me know if there is anything more I should be thinking about.
There is also soot on a relief on the detail panel below the mantel. I also tried a spot for about 10 minutes with the rust remover but nothing happened.  This I suspect is probably just soot-It is more of a grey blue color than brown (see picture below).  Thanks for all of your help.  I just tried to post the pictures but I got a bounce back, so I am sending just the text and will send the pictures separately to see if that works

On Sun, Jun 19, 2011 at 10:34 PM, stuart rosen <mail@stoneshine.com> wrote:
Roger-we have done a few fireplaces-Try prosoco's fireplace cleaner to remove the carbon and soot.Then use an assortment of abrasives such as honing  powders,sandpaper and screens that can get into tight areas if needed. Then you can take the finish to where the customer wants it with a small amount of polishing powder. Mix it up thick(so it doesnt drip) and use it like a paste with a soft cloth where the fireplace has many features and a pad driver will be hard to use. 

On Sun, Jun 19, 2011 at 9:21 PM, <flooramor@aim.com> wrote:
I doubt powder polishing will remove the sooty residue. The alkaline cleaner will work much better.

Afterwards you can powder polish. If the acidic nature of the soot has etched the stone then you may have to hone some areas.

Sent from my BlackBerry® smartphone with Nextel Direct Connect

From: Roger Konarski <qm144@yahoo.com>
Date: Sun, 19 Jun 2011 17:52:08 -0700 (PDT)
To: Restoration and Maintenance<sccpartners@stoneandtilepros.com>
ReplyTo: "Restoration and Maintenance" <sccpartners@stoneandtilepros.com>
Subject: RE: [sccpartners] Servicing a Fire Place

Thanks Fred,
I'm just going to powder polish the fire place.  Would you agree with that approach.

--- On Sun, 6/19/11, Fred Hueston <fhueston@gmail.com> wrote:

From: Fred Hueston <fhueston@gmail.com>
Subject: RE: [sccpartners] Servicing a Fire Place
To: "Restoration and Maintenance" <sccpartners@stoneandtilepros.com>
Date: Sunday, June 19, 2011, 11:25 AM


A good alkaline heavy duty stone cleaner should clean it up before you polish.

I would use an epoxy on the crack...that should hold up better than polyester

use a silcone based caulk

On Sat, Jun 18, 2011 at 7:20 PM, Roger Konarski <qm144@yahoo.com> wrote:

I would appreciate some direction on servicing this fire place. I need to do the following:

·         Clean up the overall appearance. They are not looking for high gloss, but perhaps more clarity in the stone.

·         I need to fix a crack on the mantel, what type of adhesive would be appropriate for that type of environment that is possible high heat or warm.

·         They want the seams re-caulk, what type of caulk I can use again in area that will get warm or hot.



Roger Konarski



Frederick M. Hueston PhD
Recommended stone care products  http://www.stonecarecentral.com

Many of my informational articles can be found at www.stoneandtilepros.com

Listen to my radio show at www.blogtalkradio.com/drfred
The Ultimate Stain Remover  www.GoDrFred.com

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Stu Rosen
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