Chimney Flashing

The junction where your chimney meets your roof is one of the most leak-prone areas on any residential roofing system. This intersection creates a complex geometry where two different materials and structures meet, expand at different rates, and must remain watertight through years of thermal cycling, wind, rain, ice, and snow. Edison Roofing Contractor provides expert chimney flashing services throughout Middlesex County, installing and repairing the multi-layer flashing systems that keep water from penetrating at this critical junction. Proper chimney flashing consists of two layers: step flashing along the chimney sides that weaves into the shingle courses, and counter flashing that is embedded into the chimney mortar joints and laps over the step flashing to shed water. At the base of the chimney on the uphill side, a cricket or saddle diverts water around the chimney rather than letting it pool behind the structure. Many chimney leaks result from improper flashing installation, where shortcuts like relying on roofing cement instead of properly layered metal flashing create temporary seals that fail within a few years. Other failures occur when counter flashing is surface-mounted with caulk rather than properly embedded in reglet cuts in the mortar joints. Edison Roofing Contractor installs chimney flashing the right way every time, using step flashing woven into each shingle course, counter flashing set into mortar joints with lead wedges and sealed with polyurethane sealant, and properly constructed crickets on chimneys wider than 30 inches. We use aluminum, copper, or lead-coated copper flashing depending on the aesthetic and longevity requirements of your project.