The first thing that you will want to in a patio cover (no matter what it is covering) is the material. You need to have a strong and sturdy material, but you also need something that will allow your furniture to breathe. It is very important that it allows air in and out, because you will have a problem with mold.
If you have any fabric swings or such the mold will destroy the fabric and you’ll be buying all in the springtime. Instead of having things like mold set in, you may want to take some time and get yourself a cover for the swing. This way you can save yourself from making the same purchases year after year. You will find that these covers are inexpensive, but also you’ll find that the covers will help you in so many ways.