The message
from Steve Walker contains these words:

If necessary, I may be able to track down the former owners of my house,
and find out what combination of paper and glue was used to make the
hideous borders at the tops of the walls. It took *hours* to strip.

We had a house where the former owners had added a socket (in the
lighting circuit) by chasing down the wall from the ceiling. They hadn't
removed the wallpaper first, but they filled flush with the remaining
paper and then papered over the top. So, of course, when we did the job
properly there was a ridge all down the wall.

--
Skipweasel.
Ivor Cutler - "Never knowingly understood."