Installation Problem

Elizabeth Scott
5/1/2017
Hi, My contractor stopped work on my standing seam metal roof because they were seeing some extreme oil canning. They started on the south side and it went fine and they got to the last panel and realized that the space for the edge piece was about 5" shorter than it should be. They'd lost 5" somehow during installation. So they removed the panels and installed new ones that were shorter. These new panels were horribly oil canned. Not when lying flat before being put on the roof, but as soon as they were installed. Then they started on the north side and the same thing happened. That day they didn't crimp any seams except it looks like they started to crimp a few of those shorter panels on the south side. The crimping looked horrible, like the edge had been chewed up. They told me they had a problem with the crimper and would be fixing this later. But about 1/3 of the way through the north side they called the owner of the company and reported the severe oil canning. The owner talked to them and to me and his claim is that it's caused by uneven substrate. I think this is impossible since the entire south side was fine including the panels they removed and replaced with oil canning ones. I believe that the crew they sent the second day must have done something wrong. How do I identify exactly it was they did?
Info @windowsonwashington.net
An informed customer is our best customer.
5/1/2017
The panel layout is an unfortunate mistake and can be corrected. I don't see much in this picture that would indicated oil canning, but perhaps the picture is less than indicative in this case. Any other pictures that show that? Are the panels site fabricated in this case?
Elizabeth Scott
5/1/2017
Sorry it only let me post one photo. This is the north side where they notice the oil canning.
Elizabeth Scott
5/1/2017
The panels are fabricated off site and it looks like they handled them properly (stored on their sides on the truck) and they looked fine laid flat but once installed they were horrible. However, all the work done the previous day looked absolutely perfect. Including the panels they removed- those were perfect then the next day they installed oil canned ones.
Info @windowsonwashington.net
An informed customer is our best customer.
5/1/2017
Are these site run panels? While I agree with you that I do see some oil canning, I am not sure I would describe that as severe. It is also worthy of note that many times the panels will "lay down" a bit as they have a chance temperature cycle a few times.
Info @windowsonwashington.net
An informed customer is our best customer.
5/1/2017
It is a beautify structure. Some of the line definitely seem to correspond with sheathing lines in this case.
Elizabeth Scott
5/1/2017
I'm not sure what you mean by site run? I think they have a roller they used on site but the panels already were fabricated. Here are the bad panels that replaced the ones in that first photo. I don't understand how there could be no oil canning on the whole south side the first day and the second day it looked like that.
Elizabeth Scott
5/1/2017
They're saying it's the substrate, but this is the same on both sides. I wonder if they did something different fastening them? Or the fact that their crimper broke and none of the panels on the north where you see the oil canning are crimped, could that be the problem? There was nothing different with the substrate from north to south and the problems only occurred the second day, even on the south where there was no issue before.
Info @windowsonwashington.net
An informed customer is our best customer.
5/1/2017
The last 3 panels look rough as compared to the other panels.
Elizabeth Scott
5/1/2017
Yes, and they were fine before on the south side. Would not crimping them cause that? Or maybe cutting them shorter to make the end piece fit?
Guest User
5/11/2017
I would also think that the underlayment could be playing a role in the oil canning looking at how loose it is in the picture. You want a substrate flat as possible to lesson the chances of oil canning.

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