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Restored Toronto masonry fireplace at dusk with the CN Tower skyline
Erin · From $395

Chimney Flashing Repair in Erin.

Step and counter-flashing replacement — the fix for the most common chimney leak in the GTA. We've serviced thousands of Erin 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 Erin 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 Erin 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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The complete Erin guide

Chimney Flashing Repair in Erin: everything before you book

What makes chimney flashing repair in Erin its own problem

There is a rhythm to chimney flashing repair work in Erin: a quiet summer, a frantic October, and a winter of emergencies that were visible in September.

Infill and renovation work in Erin frequently reroutes venting without re-sizing it, and undersized or over-long runs are the single most common cause of poor draft we see.

Range hoods and basement bathroom fans routinely out-pull an older flue, so the house depressurises and the flue reverses — a Erin problem that looks like a chimney fault but starts elsewhere in the building.

Across Orton, Ospringe, Ballinafad, Brisbane and Crewson's Corners, 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.

Symptoms that should put chimney flashing repair on your calendar

The list below is drawn from what Erin callers actually describe on the phone, in roughly the order we hear it.

Pay attention to when a symptom appears rather than how strong it is. Something that only shows up on wet days, windy nights or long burns is far more diagnostic than something constant.

  • Mortar joints you can scratch out with a key
  • Soot marks fanning above the firebox opening
  • A carbon monoxide alarm that chirps only during long burns
  • Lint accumulating around the exterior vent hood
  • Spalled brick faces flaking off in coin-sized pieces
  • Rooms that stay noticeably colder when the appliance runs
  • A whistling or humming noise on windy nights
  • A metallic or scorched smell during the first burn of the season
  • Birds, squirrels or wasps audible inside the stack

Not sure which service you need? Compare Fireplace Repair in Erin, Cap Replacement in Erin, Roof Vent Install in Erin — or start with the full Erin service hub.

Our chimney flashing repair process, step by step

Every Erin job follows the same documented sequence. The sequence exists so that two different technicians produce the same result, and so you receive the same evidence either way.

Timing varies with condition, but the sequence does not shorten because the schedule is tight.

  • Full visual assessment and photo documentation of the starting condition
  • Debris removal and a final clean-up pass through the work path
  • Camera or scope inspection where access allows, so findings are evidence-based
  • Photo hand-off: before and after images sent to you the same day
  • Exterior walk-around to check crown, cap, flashing and termination
  • Verification pass — draft test, airflow reading or water test as applicable
  • Baseline readings taken before work starts, so the improvement is measurable
  • The service itself, performed to CSIA / WETT method

The real cost drivers behind chimney flashing repair in Erin

Chimney Flashing Repair in Erin 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.

Price differences between Erin companies are usually differences in time on site. A 20-minute visit and a 90-minute visit can carry the same line item and produce very different information.

FactorHow it affects your price
ConditionFirst service after several years takes longer than an annual maintenance visit
AccessRoof pitch, storey count, and whether a ladder or scaffold is required
Run lengthLonger or multi-elbow runs add labour and specialty tooling
SeasonPeak October–December booking carries less schedule flexibility than spring
FindingsRepairs discovered during service are quoted separately and never auto-charged
HeightTall or offset stacks need longer rods, extra rigging and a second technician

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Seasonal timing for Erin homeowners

If your chimney flashing repair need is not urgent, aim for the shoulder months. Crews are unhurried, materials behave, and any follow-up work can still be completed before the heating season starts.

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.

How Erin homeowners get this wrong

The complaints we hear about other contractors in Erin 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?"

  • Accepting a verbal finding with no photo evidence
  • Using a hardware-store brush kit on a system that has never been scoped
  • Sealing the symptom (caulk over a crack) instead of correcting the water path
  • Approving a rebuild quote without seeing the interior scope footage that justifies it
  • Deferring a small repair through one more winter — freeze-thaw doubles the damage
  • Choosing a cap or liner by price rather than by appliance and fuel type
  • Painting or sealing masonry with a non-breathable coating that traps moisture inside

What's included — and what isn't

Transparency about scope prevents the single most common dispute in this trade. Here is exactly what a standard chimney flashing repair visit in Erin covers, and what is deliberately quoted separately instead of buried in the price.

  • Exterior termination and cap check as part of the same visit
  • Workmanship warranty in writing
  • Full method service performed to manufacturer and code standard
  • HEPA containment and complete clean-up of the work area
  • Verification test on completion
  • Photo documentation before and after
  • Not included: Third-party roof or scaffold access on unusually steep or unsafe roofs
  • Not included: Structural rebuild work discovered during inspection (quoted separately)
  • Not included: Appliance servicing that falls under a licensed gas fitter's scope
  • Not included: Permits, where the municipality requires one

What a real Erin visit looked like

We attended a Erin home where three previous contractors had sealed the same leak from the outside. The water path was entering above all three repairs. Correcting the actual entry point cost less than any of the failed attempts.

It is worth saying plainly — the value of the visit was the evidence, not the labour. Once the cause was visible, the repair itself was routine.

Compliance, certification and documentation

Work in Peel 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.

  • Insurer documentation requirements for post-incident and pre-renewal claims
  • CSA B365 for solid-fuel burning appliances
  • 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
  • Ontario Building Code and the O. Reg. 332/12 requirements governing venting and clearances

What you can do yourself — and what you shouldn't

We are not precious about DIY. Sweeping leaves off a low roof, keeping the vent hood flap free, and checking the clean-out after a storm are all sensible things to do yourself.

The limit is diagnosis, not effort. Almost every serious failure we attend was invisible from the ground, and several were made worse by a well-intentioned repair that redirected water instead of removing it.

A reasonable rule for Erin: if the task is observation, do it yourself; if the task is measurement or method, hire it out.

What happens after the visit

You receive a photo report the same day, a written condition summary with priority ranking, and — where repairs are recommended — a fixed quote valid for 30 days. Nothing is auto-scheduled and nothing is charged without approval.

If the report flags a safety-now item, we will tell you plainly what the risk is, what happens if it is deferred, and what the minimum safe interim step is.

We run the same method in neighbouring markets — Chimney Flashing Repair in Toronto, Chimney Flashing Repair in Waterloo, Chimney Flashing Repair in New Tecumseth.

FAQ

Flashing Repair in Erin — 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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