1. Input _faces do not form a closed volume. Room volume must be closed to access most honeybee features. Preview the output Room to see the holes in your model

I try alot but don’t know how to solve it?

Hi @zahrashirzadnia,

You can use the sove adjacencies to automaticly define the surface type.
Skylights have to be childsurfaces. They have to be part of a roof surface.

HBclosed volume.gh (30.0 KB)