The curtains, rods, hooks, rings, and any other accessories you choose for your patio will be slightly different from those you use indoors. They need to be durable, weather-resistant, fade or rust-resistant, and easy to wash. One common curtain material is heavy-duty polyester because it is thick, water-resistant, and protects against UV rays. Sunbrella fabric, acrylic, canvas, and olefin are some others. Depending on your priorities, you can search for products that are specified to be noise-canceling or light-blocking. As a rule of thumb, light, sheer colors let the light in while darker colors block it out.
You can also DIY your outdoor curtains. All you need to do is spray waterproofing spray on the cotton fabric of your choice, create holes for the curtain rings, and hem the edges. To install, you can drill holes in the wall or patio structure for the rods just like you would inside. If you don’t want to make holes, opt for magnetic rods or heavy-gauge wires that can be hung up with hooks.