My neighbours father 9 83 yrs old ) told me that years ago here in Wales it was common practice for the the single story homes to be thatched in Rosebay Willow herb over willow framework .
The goats would wreck it in a flash if they managed to break their tether and get up onto it . He got a right thrashing off his grandfather because he hadn't tethered the five goats properly , they put a hole in the roof in a half hour or so.