I have a on old (1890) house. The interior walls still have the
original now-very-crumbly lime plaster. On some of these walls there
is old woodchip wallpaper, covered in many coats of old paint. This
paper looks like it would be very hard to remove without damaging the
very weak plaste underneath. So I'm thinking of simply plastering over
the old wallpaper. Are there any inherent problems with this tactic? I
absolutely do not want to undertake the mammoth upheaval of removing
the old plaster and replacing with new.

Thank you,

JimT