The Weatherproof Polyester for Laser is not intended to block out but depending on your design, it may work for you. Our Blockout for Laser is a coated white matte with an opaque gray backing that will cover text or images it is placed over. This material is not weatherproof, however, and only available in the 8.5" x 11" sheet size. The Clear Gloss for Laser is a weatherproof material and is sometimes used by customers as a laminate or overlay to protect a non-weatherproof material against moisture and other contaminants. If you would like to try samples of these materials, you are welcome to request a few sheets for free by visiting the link below. https://www.onlinelabels.com/samples