The canopy will take a beating from the sun. In time, the UV rays will cause the fabric to fade and deteriorate. The best canopies may only last two or three years, while inferior canopies might only make it through a single season. At this point, you will want to replace the canopy.;If the manufacturer does not sell replacement canopies for your swing, you have several options. You could select a new canopy fabric and make the canopy yourself. You could cut and sew on a patch that covers the damaged portion of your canopy. Or, you could opt for a new canopy swing altogether.