We've settled on a roofer, thanks, to recover our Victorian slate roof and zinc dormers. He's offered 2 options for the dormers: lead or felt +slates, saying that zinc is a dying art. Lead is more expensive and I just wasn't sure about the relative merits of lead v felt and slates.
When re-roofing barrel-roofed dormers, how does lead all-over compare with felt tops and slate cheeks from the point of view of life-expectancy/durability?