Is this a good roof for my run? It's 40x20, which is a good size. I only have 10 chickens always wanting to expand. The run is 6' tall. It's 40x whatever I make it. I'll try to get pictures later. There are no shade trees, and I can't move a dog run that's been in the ground for 5 years, so I was thinking shade cloth would help a lot. Opinion?