What is a W Valley? On our roofs that we install they all have what we call a W valley, the reason this is so important is that the traditional valleys can leak. A W valley will not leak, in fact on over 500 metal roofs installed with W Valleys we have never have one leak, however on less roofs installed with a normal Valley, we have had many of those leak. We know better than most that normal valleys will leak. The picture above is a normal metal roofing valley, and the picture below is a traditional metal roofing valley. Take a look at the video I did showing samples of both and how the metal roofing fits panels fit into the valleys and the potential leaks that will occur on the normal metal roofing valley.
Here is the link to the video that I did with the W Valley