Paul McElroy
Please see attached photos, what could be causing this? roofer pointing at supplier and supplier pointing at roofer.
Dick Bus
It could be both of them, the plywood deck could also be a factor. The steel supplier could have caused it, or the coater or the slitter. There are many causes of oilcanning. The stance of most manufacturers is that oilcanning is not a cause for rejection. That being said, there are things that could have been done to reduce the visual impact; such as stiffening ribs in the flat area of the panel, embossing of the metal. Precision leveling the metal prior to forming. Shimming the deck if need be. Creating a crown in the panel using backer rod. Oilcanning issues are in the eyes of the beholder. We had one customer that said there was not enough oilcanning. Feel free to post again or call me at 610-395-8445

If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.

Find a Professional

Get Started Today

Take the first step to increasing the value of your home with a great looking, durable, fire resistant and energy efficient metal roof. Browse our list of qualified MRA Member Roofing Professionals in your area for a free consultation and estimate.