Siding is one the first things that people notice on your RV. The siding on your RV makes its appearance and also protects the interior features from damage. As you use your RV, the look can quickly become covered by dirt and mud, covering up your valuable investment. Dents, scratches and other damage can seriously detract from its value. With new siding, your RV can look decades younger, for resale value or for years of use.