The Weatherproof Polyester for Laser is not intended to block text or images from existing labels but still may work for you. The link below is for the OL1930 in the Blockout for Laser material. This material has an opaque gray backing that is designed to block any text and images that it is placed over. https://www.onlinelabels.com/Products/OL1930BT.htm If you would like to try samples of these materials, please visit the link below and we will be happy to send you a few sheets of each for testing. https://www.onlinelabels.com/samples