The steps above are for installing
a cupola as an ornamental piece only. If you are going to be using
your cupola as a functional air vent, you will need to take
additional steps - including cutting the proper size hole in your
roof, adding screening or mesh, and caulking with a silicone
sealant.
It is also recommended that you use an all weather screening on the
inside of the
louvered section to keep bees, hornets, and other insects out!