Oxford Dictionaries Online defines [interior] decorator as follows:
1.1 chiefly North American A person whose job is to design the interior of someone’s home, by choosing colors, carpets, materials, and furnishings.
1.2 chiefly British A person whose job is to decorate the interior of buildings by painting the walls and hanging wallpaper: she became a painter and decorator (emphasis is mine.)
Other example sentences:
The police had been informed, together with the building contractor and the decorator, who came to view the damage we had caused.
There was a time when a decorator painted walls in small rooms white as a matter of course, believing that white would make a room appear larger.
Our builder tells us that it is all right to paper the newly plastered walls, but our decorator says that he is a traditionalist and would prefer to wait some time for possible cracking, due to drying after the heating is switched on.
(Professions) Brit a person whose profession is the painting and wallpapering of buildings.
UK a person whose job is to paint the inside or outside of buildings and to do other related work: a firm of painters and decorators
What would be the AmEng equivalent for BrEng decorator as defined by ODO?
I thought of painter and paperhanger and painter and [wall]paperer, but I would be better off with a single word, if there ever is one.
A worker who papers walls Donald was a painter and wallpaperer for the Painter's Union, Local 48 in Worcester for many years. (emphasis is mine.)
One whose occupation is covering or decorating walls with wallpaper; a paperer.
One whose occupation is decorating walls with wallpaper.