I am replacing the roof on a coop I bought a couple years ago. I never was happy with the way the original roof performed, although it looked really neat. Here is the original: I am stripping the panels off and pulling the nails to save the wood for another project. I was planning to rip a treated 2x4, add sections of bracing between the original rafters. Then I wanted to replace the roof with corrugated roofing panels. My question: Do I have to run the ridges down the roof on the panels, or can I run the ridges lengthwise (1st vs 2nd pic below). Running the ridges the length of the coop is going to be so much easier on me, and will prevent me from snagging a shirt or arm on a sharp cut edge of the metal. I am just concerned that the roof wouldn't allow water to run off very well that way. I don't mind setting the coop in the yard an inch high on one side to provide some slope for runoff. Thanks for any advice.