Chimney Flashing Repair Toronto — Stop the Leak, Save the Ceiling
Failed flashing is the #1 cause of ceiling stains under Toronto chimneys. We strip, re-form, and counter-flash into the mortar joint — not a bead of caulk on top of brick.
What's included
- Full tear-off of failed step and counter-flashing
- New 26-gauge painted aluminum or copper on request
- Counter-flashing let into a freshly cut reglet
- Ice-and-water shield under the shingle lap
- 10-year no-leak written warranty
- Interior stain photos and drone shots on report
Why Chimney Flashing Repair matters in the GTA
Nine out of ten 'chimney leaks' we're called to in Toronto are actually flashing failures. The brick is fine — the metal that seals the roof-to-chimney joint has lifted, corroded, or was caulked on top of the brick instead of tucked into a mortar joint.
GTA freeze-thaw cycles are brutal on flashing. Ice dams push water under shingles, then it hits a caulk-only seal and rides straight down the chimney chase into the ceiling below. A single winter can undo a lazy install.
What the visit looks like
We tear off every scrap of existing flashing, cut a fresh reglet into the mortar joint, install ice-and-water shield across the up-slope side, form new step flashing under each shingle course, and finish with counter-flashing bent into the reglet and sealed with high-modulus polyurethane — not silicone.
Real Toronto pricing (2026)
Straight one-side flashing on an asphalt roof runs $450–$650. Four-sided rebuilds with cricket on a shake or slate roof push $900–$1,100. Copper upgrade adds $300–$500 depending on chimney footprint.
Why Chimney Experts
Every flashing job includes a 10-year no-leak warranty backed in writing and a before/after photo report you can hand to your insurance broker.
What Toronto homeowners say
"Booked a sweep and WETT inspection before winter. Crew arrived on time, laid down drop cloths, and walked me through the report photo by photo. Fixed pricing, no upsell — exactly what was quoted."
— Sarah M.
"Cracked clay liner in our 1962 fireplace. They installed a stainless liner and new cap in one day and the draft is perfect. Warranty paperwork emailed the same evening."
— David R.
"Called for a raccoon in the flue. They removed it humanely, sanitized the smoke chamber, and installed a stainless cap. Fair price, no drama, and they even followed up a week later."
— Priya S.
Frequently asked questions
Can flashing be repaired without removing the chimney?+
Yes — flashing lives at the roof line. The chimney stays untouched.
How long does the repair take?+
Most one-side repairs are done in 3–4 hours; full four-side rebuilds take a full day.
Do you match my shingle colour?+
Yes — we bring painted aluminum in 12 stock colours and can order to match.
Will insurance cover the ceiling repair?+
Sudden storm-related leaks yes; gradual wear no. We provide the report either way.
What warranty do you offer?+
10 years, no-leak, transferable to new owners.
How quickly can you come?+
Same-week across the GTA; 24-hour emergency for active leaks.
Serving the entire GTA
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