Manufacturer claims it changes it considerably. They say it may not meet Hwy sign standards in some jurisdictions. Since we do little, to those standards we laminate all the time, over our print jobs that is. My vinyl supplier says us the thinnest lam available to minimize the distortion of the reflective. I personally can't see the difference either way, it still is reflective to my eyes. Not all reflective vinyl is created equal make sure you get one that is printable. Meaning that all may except ink but only certain ones are printable. Hope that helps some.