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UV Rays and Resin'd stones



 
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blaight
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Joined: 29 Sep 2006
Posts: 48
Location: salmon arm, bc. canada

PostPosted: Fri Apr 20, 2007 1:30 pm    Post subject: UV Rays and Resin'd stones Reply with quote

Howdy,
Was searching some past posts and read where if you store your slabs outside the Suns UV Rays could cause resined stones to start to flake. If thats the case...what about stones that are placed in a home in a high sunlite exposure area??? Should I be alerting the consumer to this?
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Brian Laight
Hard Rock Granite
Salmon Arm, BC.
250-832-4341
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Mark Meriaux
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Joined: 29 Jun 2005
Posts: 1698
Location: Atlanta, GA

PostPosted: Fri Apr 20, 2007 1:40 pm    Post subject: Reply with quote

Flaking? Haven't heard of that one, but color-changing.....yes. As for color-changing/fading, technically it CAN happen. I've seen some pics of slabs that were badly affected, but those were from over two years ago.

I store (resined) slabs outside, and have yet to see it occur on any materials that I keep. I don't know if the resin/chemists have added UV stabilizers recently or what?

Bottom line.........it COULD happen, but "devastating" effects of fading are few and far between (IMO). Stone (both resined and unresined) can change color over time due to UV exposure (and/or oxidation and/or "patina" from regular use). I don't think that it's anything I would worry enough about to mention/disclaim to a customer.
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Mark Meriaux, SFA/MIA
The Granite Shop
http://www.thegraniteshop.net/
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dknowlton
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Joined: 03 Apr 2006
Posts: 450
Location: Manchester, CT

PostPosted: Fri Apr 20, 2007 6:26 pm    Post subject: Reply with quote

Most homes these days have windows with low-E glass which blocks some UV rays.
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D. Knowlton - Owner
The Top Shop LLC
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Boyd
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Joined: 16 Sep 2005
Posts: 621

PostPosted: Fri Apr 20, 2007 7:06 pm    Post subject: Reply with quote

For the same reason that EG [engineered gravel] can't be stored outside, natural stone with large voids filled with with resin can't be trusted either.
Both contain resins with no UV inhibitors. Per Tenax, the inhibitors cost more so neither the natural stone producers nor the EG people use it.
I've seen Crema Chianti with large resin-filled voids begin to flake and discolor from the sun. The top slab was trash. The bottom ones were OK.
The amount of resin found in most slabs is minimal, so it is not an issue.
Can it happen? Yes. Is it anything to be overly concerned about? Not really.

Boyd, SFA
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ash20ash
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Joined: 29 Dec 2006
Posts: 471
Location: Floyd Knobs, IN

PostPosted: Wed Jul 25, 2007 1:47 am    Post subject: Reply with quote

Had some tropic brown the other day that I was hoping was just water logged from setting out side. Come to find out it was fadded. Had the outline of the small remnant that was leaning on it. This slab appeared to be resined alot more than normal. Had alot of pits that appeard they tried fixing a crappy slab with resin. Anyway this is the first time I,ve had a problem with resin slabs being outdoors. In all my" 9 months" of fabbing I might add Laughing
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Curtis Marburger
Platnum Fez Cap Wearing Super Homeboy


Joined: 03 Sep 2005
Posts: 4267
Location: Elizabethtown PA

PostPosted: Wed Jul 25, 2007 1:58 am    Post subject: Reply with quote

I seen it once came off with steel wool. It was a rem of New Venetian Gold that was sitting around a long time
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Curtis Marburger, SFA
Cornerstone Granite
Elizabethtown PA

http://www.homesforourtroops.org/
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MReenock
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Joined: 26 Jan 2007
Posts: 81
Location: Allentown, PA

PostPosted: Wed Jul 25, 2007 2:18 am    Post subject: Reply with quote

we used to have a few slabs of ubatuba that sat outside and baked for some time, the yellow and gold really came out and it didnt have that dark green color, most people didn't like it but one day a customer came in and bought them, they loved the sun baked look...that might be something in the future....aged slabs...
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Mike Reenock
Premier Granite & Marble
Pen Argyl, PA
610-704-7684
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matt rickard
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Joined: 16 Nov 2006
Posts: 917
Location: owensboro,kentucky

PostPosted: Wed Jul 25, 2007 2:21 am    Post subject: Reply with quote

had it on Autumn Harmony lots of razor blade action and steel wool fixed it as well. live and learn
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Matt Rickard.SFA
Unique Granite & Marble
Owensboro,Kentucky
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