The fabric we use on almost all of the shade sails we make is warrantied by the fabric manufacturer for 10 years against the sun and UV degredation. The most important factor in determining how long the sail will last is how well it is installed. Loose or sagging sails will wear out faster. Properly installed sails should last many years. What payment methods do you accept? We accept American Express, Mastercard, Visa, and Discover though our secure Paypal administered shopping cart. You DO NOT need a Paypal account to purchase shade sails on our website. We also accept credit cards over the phone. Orders paid for with a check or wire transfer must clear before the products ship.