The ceiling is part of the construction of a building that functions as a building ceiling. Basically the ceiling is made with the intention to prevent hot or cold weather so that it does not directly enter the house after passing through the roof. However, today the ceiling is no longer just a hot or cold barrier, but also as a decoration that will further beautify the interior of a building. Ceiling is usually made with a certain height. However, there are also variations that are made not always flat. This variation is known as a ceiling drop ceiling. The ceiling is made higher than the others.
Benefits / uses of the ceiling include the following:

So that the room under the roof always looks clean and does not look wood from the roof frame.
To hold dirt away from the roof area through tile cracks
To hold the splash of water, so that the whole room is always protected
To reduce heat from sunlight through the roof area