How to Seal Wallpaper Edges
- 1). Dampen loose wallpaper edges by pressing on them gently with the sponge. This will soften the adhesive underneath. You will then be able to lift the edge using a knife.
- 2). Apply the adhesive under the edges of the wallpaper. (Some wallpaper adhesive brands are Zinsser, Guardz and Red Devil. Choose one with a pointed nozzle for easier application.) You must use just enough adhesive to lightly coat the area. Let the adhesive dry a bit before proceeding to the next step. Follow instructions on your adhesive container for the recommended drying time.
- 3). Gently roll down the wallpaper edges with the seam roller. You must make sure that you wipe up the excess adhesive that seeps out from under the edge, while pressing down.
