The Weatherproof Gloss Inkjet (WI) is a very durable and water resistant material so it should work well with most outdoor applications. The inks from your inkjet printer are not likely to be UV resistant however, so exposure to direct sunlight for an extended period of time could cause the colors to fade. For best results, adjust the paper type setting in your printer options to a Photo or Glossy setting with the print quality set to Normal or Standard. This should provide a more durable print result. You may also want to consider a UV resistant spray which can help minimize fading in sunlight. To better address the issue you're experiencing, please reach out to our Customer Support Team by submitting a support ticket at the link below. One of our representatives will be happy to assist you further. https://secure.onlinelabels.comSupport/SupportRequest.aspx