Have a client that is wanting to paint over her wallpaper in the kitchen.:no: Not a great idea, i know... No way this will have a warranty. But we have done work for her before and she is a good client. Would you apply BIN for a primer or Gardz? The paper looks to be in good shape, no peeling or anything of that nature. The paper has been on for 10 yrs +. 2 finish coats of Ben Moore after primer.