I've worked on some pretty "tight" houses over the last 5 decades.
"One" of the coolest,and gotta say something about the customer first. She was the Jackie O of the blue bloods. Had 4 sons,and pretty much adopted me as her 5th.... heck,she needed one black sheep? Not really,she loved me like a son....yada,yada.
Their house was actually sorta modest,leastwise in that particular zip code and their social tier ranking......
Built sometime in the late teens, early 20's. Two story,3 bay double pile with matching wings on both sides,painted brick.
It was the roof however that was so blooming bad arse. It was some sort of asbestos "mix"..... can't say for sure cause we never had to dink with it but hazzarding(ha) a guess would say that was accurate. The individual pieces had their lower edges shaped just enough so that it makes it look cool when done up,on the whole.
One wing was almost entirely covered with the brightest,most lush moss you ever did see. Walt Disney studios would've been impressed. She's long gone and I haven't been over there in years..... some numbskull probably pressure washed it all off years ago back when they first became the rage. But before....... that moss was on there for several decades and used to bring a smile every time I saw it.