I use the plastic netting sold at TSC with ~1” openings, comes in 7’ width, 50’ roll, fairly priced. Easy to work with, staples, zip ties, even have woven wire between sheets to make a wider piece. It has held up well under snow load, but sturdy supports are critical.
The raccoons however, can tear through it where it is attached to the eves of the coop. I haven’t lost any to the hawks since they’ve had netting overhead, and am thankful for that.
I’ve just had to learn to be smarter and more persistent in making security improvements, and managing the attractants, which is often the feed as much as the chickens themselves. No feed left outside at night, hens locked in with a varmint proof door, motion lights, traps and *sigh* frequent structural upgrades (always seems to happen right before bad weather or a vacation).
Good luck with your project!