Whenever you see seams curling on your wallpaper you invariably will ask yourself if this curling is caused by using the wrong wallpaper paste and what kind of paste should you use to repair the seams. To glue curled wallpaper seams you need a thick and sticky paste.
Applying Your Paste
Moisten dry, curled edges with a wet sponge. Apply your thickened paste to the back of your wallpaper and to the wall surface using a butter knife. To avoid stretching or tearing your wallpaper, gently press it into place and smooth it with a spatula and scrape off any excess paste.