Not all houses do.
Do all houses have attics.
Heat would be lost in cold climates.
Attics were common in all but the most arid climates in the united states.
Even the air space above a flat roof needs to be vented.
It is a poignant moment that could only happen in a movie these days most houses do not have attics.
In contrast a house built using roof trusses will have an attic space full of angled web framing that connects the top chords analogous to rafters to the bottom chord which frames the ceiling beneath the attic space.
It s very important to have an attic vented.
The house or room could have no attic but a vaulted ceiling with the underside of the roof and the collar beams visible.
When a house has a sloped roof and horizontal ceilings there is going to be some dead space between the ceiling and the roof otherwise known as the attic.
Some very old homes have attic access only through a removable vent panel at a gable end wall of the roof.
An attic framed with rafters will provide a fairly open space that can be used for storage or even converted to living space.
Attics need to be able to breathe and should remain the same temperature as the outside air.
Does your house have an attic.
An older home might have very little insulation if any at all so you should have some added.