"Goedjn" wrote in message
...
Does anyone know of an objective way to decide whether
a salvaged roofing slate is in useable condition or not?
I've got a whole pile of them in my basement,
so they're free; if they'll last as long as a cheap-ass
asphalt shingle, that's a win for me, because it means
I don't have to replace the skip-sheathing with plywood.

--Goedjn



Does anyone remember during Katrina when they were doing that one rescue by
helicopter of the people on the roof? Those diamond shaped slate roof tiles
were blowing away with the propwash from the helicopter.

I have seen houses in the South with those old diamond shaped slate
shingles. They looked like they did the day after installation, and they
looked like they were good for another 500 years unless a helicopter landed
on the roof, or a large meteor crashed. Unless you walk on them, I think
they are indestructible.

Steve