Most homes have several vent pipes protruding from various spots along the roofline. Some of these are bathroom or sewer vents, while others are for hot water heaters, furnaces or other home ...

Asphalt, wood shakes, slate and other overlapped roofings are fine until they meet an obstruction. Up against a dormer, a vent pipe, a chimney, they need flashing — a patchwork of metal sheets, and ...