4.9 · 512+ Reviews WETT & CSIA $5M Insured Same-Week
Toronto Chimney ProsWinter MMXXVI
Restored Toronto masonry fireplace at dusk with the CN Tower skyline
King · From $395

Chimney Flashing Repair in King.

Step and counter-flashing replacement — the fix for the most common chimney leak in the GTA. We've serviced thousands of King chimneys since 2003. Our routing means the closest crew to your door is usually less than 20 minutes away.

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WETT certified · $5M insured · 5-year warranty

Why King chooses us

Flashing Repair you can actually trust

Roofers caulk flashing; masons cut it in. We replace step flashing shingle by shingle and set new counter-flashing into a saw-cut reglet in the mortar joint, wedged and sealed with polyurethane — a detail that outlives the shingles above it.

Every King job is quoted in writing before any work begins, and backed by a 5-year workmanship warranty.

Scope

What's included

Benefits

  • Saw-cut reglet counter-flashing, not surface caulk
  • New step flashing woven into each shingle course
  • Aluminum, copper, or lead-coated options
  • Warrantied against water entry for 5 years

Our process

  1. 1. Strip failed flashing and clean the masonry joint
  2. 2. Cut a reglet into the mortar joint at the correct height
  3. 3. Install step flashing and set counter-flashing into the cut
  4. 4. Wedge, seal, and hose-test the assembly
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We serve every King neighbourhood

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The complete King guide

Chimney Flashing Repair in King: everything before you book

King conditions that change how chimney flashing repair is done

Most King homeowners book chimney flashing repair for one reason and discover a second problem on the same visit.

Post-war subdivisions across York share the same construction generation, so when one street starts showing the same defect, the neighbours usually follow within a couple of seasons.

Air-sealing and window upgrades have made King homes far tighter than they were designed to be, and a tight house starves a natural-draft appliance of the make-up air it needs.

Across Nobleton, Laskay, Kinghorn, Kettleby and Schomberg, the housing stock changes street by street, and the correct method changes with it. A century home with a soft-brick stack does not get the same treatment as a 2010 build with a factory-built vent — using one method on both is how systems get damaged.

the practical takeaway is that a chimney flashing repair visit should start with an assessment, not a tool. Any crew that begins work before telling you what they found is guessing on your behalf.

Warning signs King homeowners call us about

Homeowners rarely call because something failed — they call because something changed. In King the change is usually small, seasonal, and easy to talk yourself out of.

Symptoms also tend to arrive in pairs, and the pairing is the diagnostic clue. A smell plus a stain is a moisture path. Poor performance plus a noise is usually an obstruction.

  • A metallic or scorched smell during the first burn of the season
  • A visible gap where flashing meets the wall
  • Paint or wallpaper lifting on the wall that backs the chase
  • A carbon monoxide alarm that chirps only during long burns
  • Water stains on the ceiling near the chase
  • Rooms that stay noticeably colder when the appliance runs
  • Clothes taking two cycles to dry
  • Soot marks fanning above the firebox opening
  • Mortar joints you can scratch out with a key

Not sure which service you need? Compare Cap Install in King, Roof Repair in King, Inspection in King — or start with the full King service hub.

What happens from arrival to hand-off

What follows is the actual run of a visit in King, not a marketing summary of one.

You are welcome to watch any part of it. Most homeowners look at the scope footage, and we would rather explain a finding on the spot than in an invoice.

  • Interior protection — drop sheets, HEPA vacuum staged before any tool is opened
  • Debris removal and a final clean-up pass through the work path
  • Full visual assessment and photo documentation of the starting condition
  • Camera or scope inspection where access allows, so findings are evidence-based
  • Baseline readings taken before work starts, so the improvement is measurable
  • Verbal walkthrough with you before the technician leaves the property
  • The service itself, performed to CSIA / WETT method
  • Verification pass — draft test, airflow reading or water test as applicable

How chimney flashing repair in King is priced

Chimney Flashing Repair in King starts at $395 for a standard, accessible system in serviceable condition. That figure is a starting point, not a quote: the honest answer is that several variables move the final price, and any company that quotes a firm number before seeing the system is either padding it or planning to revise it on site.

We give written quotes before work begins, and any repair discovered during the visit is presented as a separate priced option — never added to the invoice without your approval.

The cheapest quote in King is frequently the most expensive outcome, because a short visit with no documentation leaves you paying again for the diagnosis you thought you had bought.

FactorHow it affects your price
AccessRoof pitch, storey count, and whether a ladder or scaffold is required
SeasonPeak October–December booking carries less schedule flexibility than spring
ConditionFirst service after several years takes longer than an annual maintenance visit
ObstructionNesting, collapsed tile or heavy glazing turns a service call into remediation
MaterialsStainless, cast-in-place and clay each price differently for the same repair
HeightTall or offset stacks need longer rods, extra rigging and a second technician

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When to schedule chimney flashing repair in King

The seasonal argument is not about price, it is about doing the work properly. Exterior repairs need temperature to cure, and a fall backlog compresses the time available for each visit.

SeasonWhat to expect
Spring (Mar–May)Best availability and pricing. Ideal for repairs — mortar cures properly above 5°C.
Summer (Jun–Aug)Quietest window. Best time for rebuilds, liner work and any project needing multiple days.
Early fall (Sep–Oct)Peak demand begins. Book 2–3 weeks ahead to secure a date before first fire.
Winter (Nov–Feb)Emergency and diagnostic work only for most exterior repairs; interior service continues.

Mistakes to avoid when hiring for chimney flashing repair

The complaints we hear about other contractors in King are remarkably consistent. Almost all of them trace back to one of the items below, and almost all of them are avoidable with two questions: "will I get photos?" and "is the finding written down?"

  • Booking on price alone and getting a 20-minute visit with no documentation
  • Ignoring a report's 'monitor' items until they graduate to 'safety-now'
  • Accepting a verbal finding with no photo evidence
  • Hiring the crew already on the roof for another trade, without certification for this one
  • Skipping the inspection because the appliance 'seems fine'
  • Approving a rebuild quote without seeing the interior scope footage that justifies it
  • Sealing the symptom (caulk over a crack) instead of correcting the water path

Included, excluded, and quoted separately

A quote is only meaningful alongside its scope. This is what is inside the King price and what sits outside it.

  • HEPA containment and complete clean-up of the work area
  • Written condition report with prioritised recommendations
  • Answers to your questions on site, in plain language, without a sales script
  • Exterior termination and cap check as part of the same visit
  • Photo documentation before and after
  • Workmanship warranty in writing
  • Not included: Parts on obsolete or discontinued appliances that must be special-ordered
  • Not included: Appliance servicing that falls under a licensed gas fitter's scope
  • Not included: Third-party roof or scaffold access on unusually steep or unsafe roofs
  • Not included: Interior finish repair (drywall, paint) where prior water damage already exists

One case that explains the method

A King homeowner called about a draft problem that turned out to be a kitchen exhaust fan overpowering the flue. No repair was needed at all; the answer was a make-up air adjustment and a change in how the appliance was started.

The lesson generalises: in King, what costs money is time, not complexity. Nearly every large invoice we write could have been a small one two seasons earlier.

The standards behind the work in King

Work in York is governed by provincial code and national standards, and insurers increasingly ask for proof that both were followed. Documentation is not paperwork for its own sake — it is what turns a denied claim into a paid one.

  • WETT certification standards for wood-burning system inspection
  • Ontario Building Code and the O. Reg. 332/12 requirements governing venting and clearances
  • Local municipal permit thresholds, which differ across the region
  • Manufacturer installation instructions, which the code treats as binding
  • NFPA 211 levels of inspection as the reference for scope and reporting
  • Insurer documentation requirements for post-incident and pre-renewal claims

DIY versus professional chimney flashing repair in King

Plenty of this is homeowner work. Walk the exterior twice a year with a phone camera, keep the termination clear, note anything that changed since the last set of photos, and you will catch most problems while they are still cheap.

Where DIY stops is anywhere a mistake is invisible. A flue that looks clean from below can still hold glazed creosote out of sight. A vent that moves air can still be running at half its rated flow. A crack sealed from the outside can trap the water it was meant to shed.

The practical split most King homeowners land on: handle the visual monitoring yourself, and book a certified inspection annually so the invisible half is documented by someone carrying $5M liability coverage.

FAQ

Flashing Repair in King — common questions

How long does chimney flashing last?+

Properly cut-in aluminum flashing lasts 25–30 years; copper lasts 50+. Caulk-only 'repairs' fail in 2–4 Ontario winters.

Should the roofer or the chimney company do the flashing?+

Whoever cuts the reglet. If the counter-flashing is only surface-sealed to the brick, it will leak regardless of who installed it.

How much does flashing repair cost in Toronto?+

Full step and counter-flashing replacement on a standard chimney runs $395–$1,200 depending on chimney size, roof pitch, and access.

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