Why Chimneys Are the #1 Source of Roof Leaks

Anywhere the roof plane is interrupted, water finds a way in — and a chimney interrupts it on all four sides. Most chimney leaks have nothing to do with the bricks and everything to do with the flashing: the layered metal that seals the joint between the masonry and the shingles. When that flashing is old, rusted, tar-patched, or was never installed correctly, water runs straight down the chimney into the ceiling below. We diagnose the actual leak path first — flashing, crown, cap, or masonry — and fix the cause instead of smearing more sealant over the symptom.

Step Flashing & Counter-Flashing Done Right

A proper chimney is sealed by two layers working together. Step flashing is woven shingle-by-shingle up both sides of the chimney so each piece laps the one below it. Counter-flashing is then cut into a groove in the mortar joint and folded down over the step flashing, so water is shed in two stages with no exposed fasteners or caulk doing the real work. Most leaks we find are from contractors who skipped the counter-flashing and relied on a bead of tar that dried, cracked, and let go. We install both layers in proper sequence with new metal, not a patch over the old.

Chimney Crickets & Saddles for Wide Chimneys

Any chimney wider than about 30 inches on the up-slope side needs a cricket — a small peaked structure built behind the chimney that diverts water and snow around it instead of letting it pile against the back wall. Without one, debris and ice collect behind the chimney, sit through every freeze-thaw cycle, and rot the deck and flashing from behind. This is one of the most commonly missing details on Northeast Ohio roofs, and it's a frequent cause of the slow leak that shows up years after a roof was installed. We build and flash crickets as part of a chimney repair or a full replacement.

Crown, Cap & Masonry — What We Repair and What We Refer

We'll be straight with you about scope. The roof-to-chimney work — flashing, crickets, sealing, and minor crown sealing — is core roofing work we do every week. A cracked chimney crown (the concrete slab on top) and a missing or rusted chimney cap are common leak sources we can repair or replace. But if your chimney needs major masonry work — full crown rebuilds, extensive tuckpointing, spalling brick replacement, or a rebuild above the roofline — that's a mason's trade, and we'll tell you so and point you to someone reputable rather than doing it poorly. You get an honest assessment of what's actually wrong and who should fix each part.

Signs Your Chimney Flashing Is Failing

Watch for water stains on the ceiling or wall near the chimney, especially after wind-driven rain; rust streaks running down the brick from the flashing line; white efflorescence or dampness on the chimney inside the attic; daylight or daylight-edged staining where the chimney passes through the attic; and any tar or roofing cement visible around the chimney base, which is almost always a sign someone patched a real flashing failure instead of fixing it. If you see any of these, the flashing is the first thing to inspect — and it's far cheaper to reflash a chimney than to repair a rotted deck and finished ceiling later.

Chimney Repair Cost in Northeast Ohio

Most chimney flashing repairs fall between $400 and $1,500 depending on chimney size, roof pitch, whether counter-flashing has to be cut into the mortar, and how much shingle work is needed around it. A full reflash with a new cricket on a larger chimney can run $1,200–$3,000. A new stainless chimney cap typically runs $200–$600 installed. We always reflash the chimney as part of any full roof replacement — doing it during the tear-off is far cheaper than coming back later, and reusing old flashing is the most common shortcut that leads to a leak on an otherwise new roof. Every repair starts with a free inspection and a written, line-itemed quote.

Why You Should Never Reuse Old Chimney Flashing on a New Roof

When a roof is replaced, the chimney flashing should be replaced with it — every time. Old flashing has work-hardened, the metal has thinned at the folds, and the counter-flashing seal in the mortar has usually given up. Reusing it to save an hour of labor is the single most common reason a brand-new roof leaks at the chimney within a year or two. If another contractor quoted you a replacement and the line item for chimney flashing is missing, ask why. Our replacements include new step and counter-flashing at every chimney as standard — it is not an upsell, it is how the job is supposed to be done.

Service Areas for Chimney Flashing & Leak Repair

We repair chimney flashing and leaks across all six counties in our service area: Ashtabula (Ashtabula, Conneaut, Geneva, Jefferson, Andover), Lake (Mentor, Painesville, Willoughby, Eastlake, Wickliffe, Concord, Kirtland), Geauga (Chardon, Chesterland, Munson Township, Bainbridge), Cuyahoga (Cleveland, Solon, Beachwood, Shaker Heights, Chagrin Falls, Mayfield Heights, Gates Mills), Summit (Akron, Cuyahoga Falls, Stow, Hudson, Tallmadge), and Mahoning (Youngstown, Boardman, Canfield, Poland). Active interior leaks are prioritized for fast response, and every project is overseen personally by Mike Ende.