It just dawned on me while I was designing a pergola for the deck(pipe dream), why wouldn't this work over the chicken run also..? The deck at times becomes too hot to enjoy and putting up a pergola will help.... hmmmm... I haven't built my coop and run yet. Granted my run will only be 8' wide so I could easilly run 8' 2x's or even run 10' 2x's to have a foot overhang on the ends. I know that the wider the board the more shade in goin to cast down. Maybe for the run using 2x8's would do the trick or maybe even 2x6's if you space them a lil closer. now that I think about it, this is starting to sound pricey. I just thought that even thou it's not full shade like a solid roof, but that a lil bit of sun and a lil bit of shade wouldn't be a bad idea.....any thoughts? Actually, has anyone done this?