In europe this type of window may be called a rooflite.
Is skylight part of roof.
It may incorporate venting options but the window itself does not open.
A skylight is a fixed window set into the roofline.
Sure a skylight is a piece of window glass facing up to the sky.
But some hoa s provided that glass in the windows of a unit are the owner s responsibility.
It may even incorporate window screening in much the same way as an awning style window set into side walls.
When it was introduced the skylight became part of the roof by accession and as such common property even though it was not part of the roof in relation to its functionality.
Skylights would be part of the roof generally.
A skylight sometimes called a rooflight is a light transmitting structure that forms all or part of the roof space of a building for daylighting purposes.
Each part plays a role in letting sunlight in while keeping moisture out.
Velux skylights the kind imperial roofing contractor installs are complex systems of glass wood metal and other components.
The velux window and skylight were introduced after the subdivision of the property is this relevant.
It is far more than that however.
A roof window actually opens usually with a pivoting awning style mechanism.
In this case if the problem with the skylight is akin to broken glass the problem could be that of the affected unit owner.