another trick I came up with last year was to use a wire wheel on a pencil grinder (10,000 rpm) and use that to clean out the low valley on the cove.That removed the sealer in no time.  I like to use the sand paper on the coves because it will not fly off like the diamonds will when polishing out the coves. We use the super flexible backer pad that is made for polishing out the ogee edges, it will roll right up the valley of the cove...of course I also have the terrco cover base grinder and carbide bricks for really serious restoration !

From: stuart rosen <mail@stoneshine.com>
To: Restoration and Maintenance <sccpartners@stoneandtilepros.com>
Sent: Thursday, November 17, 2011 6:45 PM
Subject: RE: [sccpartners] TERRAZZO

Ken,
we do all our cove moldings by hand using sandpaper and 5 inch resin pads after stripping.Would like to see what the convex diamonds can do.
You cant leave the coves rough you need to take them to a least 400 or higher or use twisters dry high speed to finish them.
Coves will be the hardest part everything else will be straight forward. I wouldnt be too concerned about sealing.
 
 
 


 
On Thu, Nov 17, 2011 at 4:35 PM, Tim @ Classic Marble Restoration <marblerenu@aol.com> wrote:
Ken,
There are convex diamond pads available from most suppliers like Vic or Granquartz.


Tim Lesnar
Classic Marble Restoration
763-784-2483 office
622-250-0041 cell

Propartner / MarblePerfect wrote:

Hi Partners,
 
There I was thinking how I wish I got more calls about Terrazzo and bang we got
a large terrazzo job. ( I may have to wish and think more often).
 
It wont be done all at one time because there ar many areas from 200 ft to 2000 ft
We are going to start with one of the small entry lobbies its 175 sq ft this will be the
test area and also including the cove base that comes up about 7 inches.
The building is 90 yrs old and so are the floors. I will do the floor while my other two guys work the cove.
The cove looks blackened from old floor finish. Floor does not look as bad. I was thinking
Stripper first, 120 coppers on my cimex diamond finisher 880 rpm 3 head planetary. Then up
Thru the resin grits 50 thru 800 then my marble polish to pop a great shine and then penetrating
Sealer. I was thinking of using 120 grit sandpaper for the cove, should I leave that rough or go to 220 and 400
how do you get flexible enough with a hand grinder polisher to make the rounded transition where the floor and cove meet?
 
Any of your thoughts on this process would be appreciated. Also would you use solvent or water based sealer
 
Thanks
 
Ken
 
 
 
 
 
 



--
Regards,
Stu Rosen
201-446-1200
www.mbstonecare.com 
www.mbstone.com
www.stoneshine.com
"EVERYTHING MATTERS "
 

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