I was recently asked:
My wife and I were married almost 20 years ago. Our ketubah was not protected well and has tears along its edges and is beginning to frey. Would our ketubah be repairable?
While you might not be able to repair the existing damage, you can prevent it from being damaged further. This is not a service I do, but I think you could find help at a good quality frame shop. Look for someone who has experience in framing old prints, because they might be able to help you frame it in a way that preserves it better. One way they can preserve the ketubah would be to sandwich it between two sheets of acetate (so that it is “floating”) and then frame it. This would keep the frayed ends secure, protect it from UV light (to mimimize further yellowing), and keep the ketubah from getting damaged further. They might recommend that you dry-mount it to a board. This would definitely make it more secure, but would also be something you couldn’t un-do, so I’d be careful about that. Whatever they do, make sure they use archival materials, and ask to see samples of the technique. And, reinforce to them that your ketubah is irreplaceable.
Another option you might consider is getting your ketubah scanned. The graphic artist could retouch the scan, cleaning up all signs of damage, and print a new copy on acid-free paper. You could then put away your original ketubah to keep it safe, and use the new cleaner copy to hang on your wall.