Ideally, you should apply the Wall Quotes™ decal within 3-4 weeks of receiving it. The longer you wait to apply it, especially if it’s exposed to extreme temperatures, the more likely you are to have to spend more time on application. The vinyl is rated for up to several years, but the opaque transfer tape is meant only for temporary use and its adhesive integrity is thus less reliable. If you’ve stored the Wall Quotes™ for awhile, the transfer tape may not stick well to the letters, making it difficult to get them to release from the backing paper. Or it may stick too well, making it difficult to get the letters to stay on the wall. It’s still totally possible to make the Wall Quotes™ work properly and get it to both release from the backing paper and stick to the wall, but it will take more patience and time on your part. If you’re having trouble, please contact us and we’ll be happy to offer some suggestions to make this process as painless as possible. But to avoid any complications – we simply suggest applying the Wall Quotes™ as soon as possible after it arrives in the mail.