Roof Flashing Guide

Where flashing is commonly used

• Roof-to-wall intersections
• Chimneys and skylights
• Valleys
• Plumbing and mechanical penetrations
• Drip edges and roof edges where applicable

Why replacement is a good time to evaluate flashing

A roof replacement exposes areas that may be difficult to inspect when the roof covering is in place. The written scope should explain what flashing will be replaced, reused, or newly installed.

Questions to ask

Ask how wall flashing, step flashing, counterflashing, valleys, and penetrations will be handled and whether any siding, stucco, or masonry work may be required.