In Cartagena, Colombia, where the Spanish Inquisition burned 800 suspected sorcerers and witches in the town square, roofs were equipped with spiked corners to prevent witches from landing on them.
I've been using vinyl on the affordable homes I've built over the last few decades for a couple of simple reasons. It is durable and it is inexpensive, so it frees up budget for energy improvements and high quality interior finishes.
As a building inspector, I used to spot potential health and safety violations with a keen eye, calling out “trip hazards”, “head-knockers” and “shock threats” with regularity.