The height of a room or space is typically determined by the height of a storey.
Certain spaces such as external balconies and decks have unique heights, not determined by their storey heights. Their walls are typically shorter than the walls of other spaces in the floor plan.
Similarly, certain internal spaces such as cubicles and partitioned rooms have unique heights, not determined by their storey heights.
In Snaptrude, there is a special room type: low-walled spaces, which have these unique properties and behaviours.
Any rooms or spaces which are lower than 2100 mm are automatically considered as low-walled spaces.
Auto generated walls for these spaces are of the same height as the room itself.
The roofs of these spaces are created at the upper height of the storey, i.e., at the same height as all other roofs. This is done to ensure that all spaces have sufficient vertical clearance.
The base of these rooms is considered to always be attached to the base of the storey, i.e., when storey replication is done on these rooms, they are not replicated exactly on top of themselves. They are copied at the base of the next storey, leaving a vertical gap between the copies.
You can over-ride the height of a room in 3 ways:
Label a room as a Balcony, Terrace or Deck.
Move the upper face (or roof) of a room downward, to below 2100 mm from its base, to create the desired balcony.
In Object Properties, type in the desired height of the room (lower than 2100 mm).
The storey assignment of vertically edited rooms does not change, as there is no edit to the base of the room
On replicating, low height and low walled spaces (like balconies or office cabins) are copied up or down to the base of the next storey such that the clear height of the space is always maintained.