Protect Your Slate Roof From Ice Dams
Henry Mitchell of HKC Roofing in Cincinnati, Ohio, shows a method where the eaves on a slate roof can be fortified by increasing the headlap. This involves removing the slates along the eaves, then reslating the eaves with an extra course or two to be able to increase the headlap. Here the three inch headlap has been increased to five inches. This helps prevent water penetration during ice damming conditions.