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Unread 11-15-2013, 02:01 AM   #16
Higher Standard Tile
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I'll try that too Greg, thanks.
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Unread 11-15-2013, 09:47 AM   #17
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That is a really great article, and a heck of a plug for our friends at Aqua-mix/Custom Building Products.

http://www.custombuildingproducts.com
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Unread 11-16-2013, 09:02 PM   #18
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Here are the pictures I forgot to add to post #14- showing packing and roller marks. (look close)

Another interesting thing. We were supposed to receive all the same lot # but we got two different shades of the same tile. One lot had the kiln release marks, the other batch had none.

Will try all the various cleaning techniques on Monday and report back. Sure hope we don't have to rip up tile.
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Unread 11-17-2013, 04:25 PM   #19
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Brian, thanks for posting that article. Wish I had known it in February.

The tile I had a problem with was in almost completely enclosed cardboard with only about a 6"x6" opening on one side.

Isaac, I hope you can clean it up, I know the nano-scrub did nothing for me.
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Unread 11-18-2013, 07:41 AM   #20
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I read through the article and wanted to add my insight as well from someone who has worked in a porcelain factory and imported thousands of containers of porcelain from overseas. While kiln wash can definitely be deposited on the front of tiles, usually what is physically happening in transit is that the kiln wash acts like poultice and abrades the surface of the tile only where contact is made with the back of the next tile. Typically this happens on glazed porcelain where the glaze is soft (Visible Abrasion II or III) and the surface is flat. About the only thing that can be done is to use an abrasive cleaner (the Barkeeper's Friend is a good example) and try to even out the gloss across the entire piece. Before tearing out all of the tile, you may even want to try an orbital buffer or consult with a stone refinisher.

On another topic, the roller marks in the photos above occur when the rollers in the kiln get glaze on them. The glaze 'grabs' the tile as it passes over the roller and gives it that characteristic hump. Ironically the kiln wash is specifically added to the back of the tile to prevent this so too much kiln wash can lead to the pattern you see that looks like a grid, too little can lead to roller lines. Manufacturers pull the rollers out of the kiln on a regular schedule and clean the glaze off of them, but if they are not cleaned in time then you get the issue you see there. The challenge with this defect is that you won't see it until you get wash lighting from across the room showing it up.
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Unread 11-18-2013, 02:30 PM   #21
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My experience is the issues Dan mentions are the more common complaints.
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Unread 11-18-2013, 10:59 PM   #22
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Thanks for the run down Dan, very interesting... either way, it don't seem like a tile guy should be on the hook for it.
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Unread 11-18-2013, 11:11 PM   #23
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'Specially not if the manufacturer is actually aware that the defect might not be evident before the tile is installed, Dana. Makes it difficult for a fella to do the right thing, eh?
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Unread 11-18-2013, 11:30 PM   #24
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Of course all the tile boxes have fine print that say the basically the same thing-

"If you are dumb enough to set it, it's your tile"
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Unread 12-02-2013, 07:46 PM   #25
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What ever came of this problem Isaac? Did you get the marks off? If so, with what?
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Unread 12-02-2013, 08:39 PM   #26
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I've found BKF to be one of the best cleaners for removing garbage like this, or, more commonly the case for me, thinset haze that doesn't want to come off the tile. The stuff's dirt cheap too.

Props again to Tile Joe for recommending that some time back. Has saved me a lot of wailing and gnashing of teeth.
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Unread 12-02-2013, 11:41 PM   #27
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I don't know what BFK is? Does it stand for something?
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Unread 12-03-2013, 01:28 AM   #28
Higher Standard Tile
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Jim BKF stands for Bar Keeper's Friend.

Thanks for the reminder Greg. We were able to remove it fairly well. But if you look hard enough in certain conditions you can still see it slightly.

Tried all of the pictured items. What worked best was the diamond impregnated pad on my variable speed. (the little grey thing in the center)It was 800 grit. I don't have a link for the exact pad I used but got it from a local cleaning supply company that also has stone restoration supplies. They also sell full size pads for large floor machines that would be helpful if you had to do an entire floor.

Here is a link to company I found when i googled Diamond Impregnated Pads- I don't know anything about this company but their name sounds familiar
http://www.jondon.com/supplies/concr...hing-pads.html

The other chemicals didn't do much for us.

The client gets arrives in a few days. We informed them of the problem, we will see how the final walkthrough goes. They personally selected the tile but we provided it in our quote.
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Unread 12-03-2013, 08:27 AM   #29
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any pictures of the tile in the light ?
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Unread 12-04-2013, 01:57 AM   #30
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No but will try to get some and post. May be a few days.
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