Yes, avoiding leaf buildup or avoiding water over-run on the flashing is important, but it is mainly because there is only one correct answer when,as humans, we get a chance to answer the question “Do you want to live inside a giant pangolin?”
You are correct, but slate is already pricey. You comment implies that company was gouging, though maybe not your intent. Sometimes a person wants something and will pay the price to get it.
The only thing I can think of is that it would mitigate the risk of leaf litter corroding the flashing. It does add cost, so profit, so there is that.
Yes, avoiding leaf buildup or avoiding water over-run on the flashing is important, but it is mainly because there is only one correct answer when,as humans, we get a chance to answer the question “Do you want to live inside a giant pangolin?”
You are correct, but slate is already pricey. You comment implies that company was gouging, though maybe not your intent. Sometimes a person wants something and will pay the price to get it.