Window graphics on vinyl material can last up to 10 years depending on factors such as the quality of the material, the printing, and the installation. Also, consider that window decals are exposed to direct sunlight. This will gradually fade the vinyl colors and possibly the adhesion. Still, these window signs are very durable and require no maintenance. If you have no need to remove the signage in the short term, consider the permanent window graphics for signage that will last for more years.