There is always a lifespan on any product. If the products are cared for, cleaned, stored away correctly, they will last many years. This question is more about the printing process than the product itself as Sintra board signs are meant for both indoor and outdoor use. We utilize UV-coated permanent LED inks designed to hold up over time to sunlight so a fair estimation would be somewhere between 6 and 12 months (can be longer depending on conditions); the more direct contact with the daylight your prints have will impact the longevity of your prints.