Can a Photoluminescent Exit sign really last up to 20 years?
The photoluminescent pigment will store and emit light for the entire life of your sign. However, a dirty environment will decrease the overall life of your sign and its overall brightness. If you keep your Exit sign clean and avoid wear-and-tear, it can last for 20 years or more. Remember, photoluminescent signs are only as bright as the light they are able to absorb. If the sign is dirty, it will absorb less light and decrease in brightness over time.
