@Scotty from BIThis is how I did it.
Nice that ceiling was prefect distance form roost...did you plan it that way?
Wonders what you have for ventilation....
....and....because I don't know what "BI" is...
Where in this world are you located?
Climate is almost always a factor.
Please add your general geographical location to your profile.
It's easy to do, (laptop version shown), then it's always there!