Contra Vision holds stock in warehouses in the US, UK and Netherlands. At any time there are a number of offers on overstock material or material which is close to its Best Before Date (BBD). All self-adhesive materials have a shelf-life and so a BBD. We are cautious with our BBDs to ensure the materials that we sell give optimum performance. Once perforated material exceeds its BBD there may be a gradual tightening of the release of the material off the liner, and more care might be needed to remove the liner in one piece. Once the graphics are installed, the expected lifetime on the window is typically not impacted by the material being slightly past its BBD. Our cautious approach to setting the BBD of our materials means that there are generally no problems. However, we recommend that discounted material is printed and applied within 3 months of purchase and a liner removal test on a small piece of material before printing to ensure that there are no issues at the installation stage.