There is no specific service life or shelf life for DuraLar adhesive-backed film. Many variables can affect the use and performance of the pressure-sensitive adhesive in a particular application, including what surface the product is being adhered to, quality of application, external conditions, and type of final application. Therefore, it is essential that you evaluate the adhesive product to determine whether it is fit for a particular purpose and suitable for your method of application. Please ask your sales rep for a sample to test.