run numbers on backside of panels

Guest User
8/23/2008
I'm a distributor of metal roofinng panels. I have a contractor concerned about some of the panels having a "run number" on back side of panels while others do not. I've seached several sites on web and cannot find any information on general polices of pre-coating from different companies. Is this a random choice or should it be required to determine quality of product? The stencil on a 3' wide panel is on underside outer rib and a date is included with script. Do you know what the correct term is and how do I find this information.
Guest User
8/23/2008
Personally, I like having the run numbers on the back of the panels. One manufacturer I buy from does this. It states that the panel is Class IV impact resistant, and the insurance paperwork I fill out states that the panels must be labeled. Also, it has my company name and the ticket number. The advantage of this as I see it is that if we have a problem with the panel in a few years, the manufacturer can always trace it back to a certain coil from their manufacturer and maybe trace it to a certain coating or process.
Todd Miller
Isaiah Industries, Inc.
8/23/2008
Different manufacturers will have different things they print on panels and for different reasons. If they expect you to main separation between lots, though, they should be tleling you that. The only way to know for certain is to check with your particular manufacturer.
Guest User
8/25/2008
First of all, I appreciate responses. Already contacted manufacture about this issue. The explanation I was given was that steel coil is purchased then sent to a pre-coat facility to be painted. Precoat companies are chosen according to their region yet use the paint system preferred by certain manufactures. Do you have access to these "pre-coat" companies to get information on comparsion of usage of such "run numbers" and reasoning behind usage?
Todd Miller
Isaiah Industries, Inc.
8/26/2008
There are probably a hundred different such coil coating lines across the US. Some mark the coil. Most do not. The ones that do mark would have their own individual methods of marking and coding they use. Only the manufacturer of the metal roofing you're buying could help you track down this information. One thing you may wish to check is whether the product warranty requires you to keep color lots separate.
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