granite scratches

franzwig · Good Friend Joined: 02 Jan 2006 Posts: 10

I am renovating a home. The owner has scratched the absolute black granite counters with the green abrasive side of a common sponge. Scratche amount to dulling vary small areas. Is it possible for me to polish thes out with average tools or do I need diamond polishing methods? Thanks, Franz

Guest · Posted: Mon Jan 02, 2006 4:52 pm Post subject:

Franz, it is almost impossible to do as you just describe. Are you sure it is granite and not a marble. If it is indeed granite it was doctored and you should not attempt to fix this on your own. Can you post a picture?

franzwig · Good Friend Joined: 02 Jan 2006 Posts: 10

It's definelty granite from large slabs from a local granite/marble company.. I can't imagine why he was scrubbing it with the abrasive in the first place. Everything wipes off easily with granite. It doesn't even look like scratches more like slighly dull. Franz

Matt Lansing · Posted: Mon Jan 02, 2006 5:21 pm Post subject:

Unfortunately yes, you will need to call someone in to repolish those spots in the countertops. Diamond pads are needed to bring the polish back. Black granite is one of the hardest to surface polish and get it to match the rest of the surface. If not worked properly you can get a hazy transition line from the area you worked to the original surface that can be a pain to remove. You have to slowly overlap each grit to remove the haze. Most likely the scratching on those tops is slight and should be able to be removed with a higher up grit and you may be able to do it yourself but you will spend more money to buy the pads needed than you will pay to have someone else do it.
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DeFusco · Posted: Mon Jan 02, 2006 6:55 pm Post subject: rejuvenating your polish

If it IS granite it would not have scratched with a scrubbie pad - it wouldn't even scratch with steel wool.
If the stain is dulled it may have had something like orange juice spilled on it and left there. The acid in the juice can affect the shine.
If there is no repair need you can try to take some polishing compound like Diaglo, sprinkle it on, mist over it with water in a spray bottle and buff out the stone.
Here is a link for you:
http://www.defusco.com/index.php?cPath=82_508
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Guest · Posted: Mon Jan 02, 2006 7:09 pm Post subject:

DeFusco, what would happen if someone used a buffing compound like Diaglo on a stone that was doctored with lets say….. black wax? The way acid affects granite is by etching the stone. If this does happen a simple polishing will not do the job. Franz this is why a picture of the damage area can be helpful. I am not saying that Defusco is wrong. But more details are needed before any us can give you a real answer.

brian briggs · Posted: Mon Jan 02, 2006 8:25 pm Post subject:

A green scrubbie WILL scratch granite AND engineered stone.
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Guest · Posted: Mon Jan 02, 2006 10:54 pm Post subject:

What Brian Said. i would ad that It is possible to bring back a matching shine it will be alot of work depending on how big the area. definatly not for the DIY call a pro

Curtis Marburger · Posted: Mon Jan 02, 2006 10:59 pm Post subject:

that was me
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Guest · Posted: Tue Jan 03, 2006 12:14 am Post subject:

Click on the image below. Removeig polish with a green pad.

Chris · Posted: Tue Jan 03, 2006 12:54 am Post subject:

Hey wholigar, omit the windex and push hard with the scotch brite(the thin one). It will scratch. You could hone a whole slab with them. They take the shine right off even the hardest granite. I didn't believe it myself, untill I tried the scotch brite.
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Curtis Marburger · Posted: Tue Jan 03, 2006 12:57 am Post subject:

I stand corrected. We have purposely not sold AB Black for a long time. The last AB Black we rejected did scratch and not only failed the acid test diet pepsi etched it as well.
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brian briggs · Posted: Tue Jan 03, 2006 1:09 am Post subject:

We have pulled the sample as well.
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Guest · Posted: Tue Jan 03, 2006 1:11 am Post subject:

Ok Chris, how much long and harder do have to work the pad.

brian briggs · Posted: Tue Jan 03, 2006 1:16 am Post subject:

Jo,

It can be done, has been done and it WILL happen again. I have seen it for my self on Emerald Pearl.
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Chris · Posted: Tue Jan 03, 2006 1:45 am Post subject:

Just a few back and forth scrubs with your thumb with high pressure. Not all the green pads have the bad stuff.
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Freeman Granite & Marble Inc.

Guest · Posted: Tue Jan 03, 2006 1:52 am Post subject:

Click on the image below. I removed the polish with a green pad.

Chris · Posted: Tue Jan 03, 2006 1:56 am Post subject:

Neat huh, put one on a backer and do a whole top. Very Happy

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Freeman Granite & Marble Inc.

Guest · Posted: Tue Jan 03, 2006 2:00 am Post subject:

so now what? how can we help Franz if this is what was done. I still do not see a buffing compound alone fixing this.

Curtis Marburger · Posted: Tue Jan 03, 2006 2:06 am Post subject:

Get out the turbos, or we started using corner wheels with velcro backers (no vibration at all ) from mark at StonePro. follow up with MBs Powder.
I would start with 500
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Mike Lutz · Posted: Tue Jan 03, 2006 2:10 am Post subject:

why why why?
i took the class at expo that tom headed. it showed the mohs hardness scale and scotch brite wasn't on there but i sure it was below granite!
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Chris · Posted: Tue Jan 03, 2006 2:36 am Post subject:

Easy fix. Franz, call around, there's a granite guy out there that can fix this, or at least make them 99% better.
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Freeman Granite & Marble Inc.

Guest · Posted: Tue Jan 03, 2006 2:37 am Post subject:

why why why, it is called PSI. You can scratch a harder surface, with a softer one by applying just a little force. You have to remember the softer one will wear out faster, but none the less it will scratch the harder one. hardness and the ability to scratch are very different. I bet you I could dig a hole in granite with carrots if you I could afford enough carrots.

Chris · Posted: Tue Jan 03, 2006 2:43 am Post subject:

They have carborendom. Carbonendom? (same stuff stones are made from) It's harder than granite.
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Freeman Granite & Marble Inc.

Mike Lutz · Posted: Tue Jan 03, 2006 2:43 am Post subject:

and you could live long enough. good point.
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