Most chimney leaks don’t start in the chimney—they start at the roofline.

Flashing is the critical barrier where your chimney meets your roof. When it’s improperly installed, aged, or begins to separate, water finds its way in fast. And once it does, it doesn’t stay contained—it spreads into ceilings, framing, insulation, and living spaces.

At J. Wilson Masonry, we don’t just “patch leaks”—we correct the source.
We repair and install proper chimney flashing systems designed to shed water the right way, including step flashing, counter flashing, and watertight transitions that hold up against Maine’s freeze-thaw cycles and heavy weather.

Common signs your chimney flashing is failing:

• Water stains on ceilings or walls near the chimney
• Moisture or dripping inside the fireplace
• Musty odors or signs of mold
• Deteriorating roofing or siding around the chimney

Left unaddressed, a simple flashing issue can lead to:

• Interior water damage
• Mold growth and air quality issues
• Roof rot and structural deterioration

The bottom line:
Flashing failure is one of the most preventable causes of chimney and interior damage—but only if it’s handled correctly.

We focus on long-term solutions, not temporary fixes—so you’re not dealing with the same leak again next season.