Hi @Ellupelluellu
I am not the best at roofs so basically tend to use a lot and never change because bad things happen usually when I try-)
You cannot see the rain properly in the house on the pic but believe me it's as there as if the lot is situated outside in the rain with the residents holding up their arms as if they are actually outside in the rain..
https://i.imgur.com/DDUVwy6.jpg
Next under the roof itself I placed roof/floor tiles to try and stop it but it didn't.
https://i.imgur.com/YvTBneC.jpg
and the lot with the the full roof showing which still does not stop the rain entering the lot..
https://i.imgur.com/1WhoXT9.jpg
