The Mirage Pergola is a great addition to the outdoor room. The Mirage Pergola offers shade from the summer heat or makes a great hot tub enclosure. Best of all, this pergola doesn't need any painting or staining. Crafted with premium weather resistant vinyl, The Mirage Pergola is virtually maintenance free. Just the occasional rinse with a garden hose is all you need to do to keep your pergola looking great year after year. We back this up with a 20 year warranty against yellow ing, warping, cracking, and rotting. Wood will rot away, and wrought iron will rust and burn plants when the sun shines down on the black metal. Vinyl is strong and durable, so you can cultivate plant growth on your pergola without having to worry about rotting, painting, or burnt plants.