What were the choices they had when picking a roof material? While lead has it's disadvantages, it was probably the best choice of them. Lead - the traditional

What were the choices they had when picking a roof material? While lead has it's disadvantages, it was probably the best choice of them. Lead - the traditional material using for cathedral roofing is easy to work with, easily soldered to prevent leaks, but is heavy and is toxic when burned. Copper - Also a traditional material that is easy to work with, also easily soldered to prevent leaks, is lightweight and non-toxic. But the roof would be green afterwards (once it oxidizes) not dull gray. Steel - Lightweight, can be cut & bent to fit around crenelations. But can't be soldered - any waterproofing would have to be done with caulking & crimping other steel over joints. Available colors to match the original lead. Won't last as long as some other choices (it eventually rusts). Composite asphalt shingles - just no. Wooden shingles - Moderately difficult to work with. Easily burns. Will get moldy unless treated with chemicals. Slate tile - Very difficult to work with, but inflammable. Heavier than lead and is brittle. But it would have a similar color to the lead its replacing. Concrete tile - similar pros + cons as slate, but cheaper and doesn't last quite as long.