As it refers specifically to the area atop the roof or to the top area of the roof rooftop is not always synonymous with the entire roof.
Roof deck vs rooftop.
Occupied rooftops are becoming common in multi family and commercial buildings as building designers and owners seek to increase marketability by offering amenities such as roof decks.
Your choice of deck flooring is even more important for roof deck construction than it is for ground level decks.
In most cases these roof decks are open and uncovered with half height walls parapets around their perimeter.
For instance the rooftop blew off the house would probably unintentionally imply some lower level of the roof remained.
Roof decks in warmer climates may be covered with terra cotta or other types of tile.
A roof deck is typically is a rooftop patio or garden area.
Compare similar location words such as desktop.
A rooftop deck is a unique way to add some extra entertainment space within the footprint of your existing structure.
You will have many considerations when planning a rooftop space but a very important one is your choice of flooring.
As a verb roof is to cover or furnish with a roof.
Vinyl provides a waterproof coating to a roof deck while wood strips to form the decking may be coated with sealers or other waterproofing products.
As nouns the difference between rooftop and roof is that rooftop is the top surface of a roof while roof is the cover at top of a building.
Rooftop is a derived term of roof.
The deck itself is often made of wood or vinyl.