[Hondaracer]

Almost all these “passive” homes I see built have flat roofs, as it’s presumed it’s easier to make a flat roof air right etc.

Flat roofs are incredibly hard to do correctly. Watch all these stupid passive houses be nothing but nightmares for future owners. Where as my 100 year old house has a crazy pitched roof that you basically need scaffolding to work on, it’s so steep nothing can stay on it. Moss doesn’t even grow on my roof because everything just runs right off.