The term you might be looking for is Ridge.
Ruskin Bond wrote the book 'The room on the roof'.
The room under the roof is called an "Attic".
a basement
An atrium is a room or entrance hall, rather than a house, which has a glass roof.
It would be called the "ATTIC".
Above the top floor of your house and under the roof.
The room immediately beneath the roof is commonly called the attic.A small dome, lookout, or other structure on a roof is called a cupola.
A duplex.
book -room on the roof
The floor of a serf's house usually had a hearth on it. The smoke from the hearth went up through a hole in the roof or out through holes under the peaks of the roof.
Climb to the roof. He will have less room to escape you and you can grab the key.
The Room On The Roof was written by Ruskin Bond.