FOR A PEELED SEAM, begin by applying a little seam adhesive to the wallpaper with a narrow artist's paint brush.
SMOOTH OUT THE paper using a wooden seam roller, then wipe off any excess adhesive with a damp sponge.
FOR DOUBLE-CUT patches, use a sharp razor knife and steel straightedge guide to slice through both layers of the wallpaper.
FILL ANY HOLES with spackling compound after removing the patch and peeling off the damaged wallpaper section.
APPLY THE REPLACEMENT patch to the wall and slide it into position with your fingertips. Be sure to align the pattern.
ACCESS A TRAPPED air bubble in vinyl wallcovering by cutting a tiny, vertical slit with a sharp razor knife.
USE A GLUE SYRINGE to force seam adhesive under the bubble. Then smooth out the repair to remove excess glue.