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Old 04-29-2011, 04:58 PM   #1
pgc555
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Arrows on the back

Just wanted to post this to maybe save somebody a little time.
Had a 600 sq.ft. 18x18 Bellagio porcelain to do today. Snapped a line and
figured layout and mixed up the tiles from different boxes like I would normally do. With me so far. Dropped 5 or 6 down my line to keep straight , then worked off the first coarse. first two tiles lined up fine, then they started gaining.
I never thought to check to see IF there were arrows on the bottom of the tile.
I key in porcelain so I covered them so fast I didn't notice. Sure enough, after putting a tape on them they were different size one way. Pulled them up and started again. All's well.

So, CHECK TO SEE IF THERE ARE ARROWS ON THE BOTTOM FIRST, Rookie mistake after setting for 40 years.
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Old 04-29-2011, 05:00 PM   #2
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Yes I always check for arrows sometimes they are hard to find, I make my helper draw a small line on the face so I don't have to flip and check. When I grout the tile the grouting erases the small mark.
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Old 04-29-2011, 06:00 PM   #3
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Your situation is the only time I care about the arrows. I've seen guys put all the arrows in the same direction but the tile only had one pattern it looked horrible.
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Old 04-29-2011, 06:22 PM   #4
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I've never really paid much attention to them .never had any problems ether .
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Old 04-29-2011, 06:25 PM   #5
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well first you should check some of your tile in different boxes to see if they are dead on.
most rookies do that.

Quote:
Originally Posted by tilelayer
I make my helper draw a small line on the face so I don't have to flip and check.
or you can have your helper stack them all the same direction, tad bit less work
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Old 04-29-2011, 07:00 PM   #6
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Is this common to porcelain? I have never checked before. And as I said,
This particular tile WAS different size ( rectangle ) 17-3/4" one way and 17-11/16" the other - 1/16" may not seem like much but I was trying to use 1/8" grout lines. I spread the lines to be more like 3/16" and that helped square the corners.Running bond with this size tile gives you the lippage problem where the two corners meet the center of the other. ( Gerald covered this in a workshop and said the the industry is allowed warp-age within each tile.
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Old 04-29-2011, 07:14 PM   #7
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didn't look it up to check,

What's the ANSI standard, minimum grout joint width = 3x difference in tile sizes?

1/16 differences in tile = 3/16. Sounds like you got there... one way or another.
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Old 04-29-2011, 07:31 PM   #8
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Someone from here(forgot who) told us the arrows are meant for the factory when they're being made, not when we're installing them.
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Old 04-29-2011, 07:56 PM   #9
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It's very common for porcelain to have the arrows. 15 years ago I was told it's directional and the size can vary a bit in relation to the arrows. In my experience is that most tile will vary in size but the the arrows usually dileneate pattern more than anything.

I've had about 2% of my customers question the pattern when all of the floor is down. Some want everything to look the same and others want a random pattern. The vast majority won't notice either way.

Either way I always look at every new box of tile and the various patterns then give my customer the decision.
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Old 04-29-2011, 08:29 PM   #10
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I was told by a rep from florida tile that the arrows were just mold arrows, show which direction they were in the mold at the factory and did NOT mean anything to the person laying the tile. He said that this was common practice at all the tile manufacturers and that unless the box specifically called out using the arrows as the guide for setting you need not pay any attention to them.
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Old 04-29-2011, 08:30 PM   #11
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*unless the press making the tile goes out of calibration
or the tiles start getting baked ob long.
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Old 04-29-2011, 08:35 PM   #12
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I have never once paid attention to them
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Old 04-29-2011, 08:50 PM   #13
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Quote:
Originally Posted by Italian Trade Commission

4. My tile has an arrow on the back. Is this a guide for installation?

No. This is a guide for loading the molds into the kilns (ceramic firing oven).
http://www.italytile.com/faq.php#q4
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Old 04-29-2011, 08:53 PM   #14
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Old 04-30-2011, 08:18 AM   #15
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I can't tell why, but when I ran them all the same way the layout was fine.

I have only been setting tile for 40 years so I'm kind of a "newbie".

With most tile I'm sure this is NOT a problem. My post was to save some time for anyone setting 18x18 Bellagio ( sorry, I'm not sure the manufacturer - I'll check a box on Mon. and post the name ) I'm not slamming the tile manufacturer either. I know it's the installers responsibility to check before you start setting.
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