Code Compliance · Markham
Ontario Code Compliance for Liner Install — Markham
Here's how Markham homeowners actually approach liner install in 2026, based on what our field crews see every week. Deeper freeze depths mean liner condensation and cap ice-loading. Below: what to expect, real numbers, and the questions worth asking before you book.
Quick answer
Liner Install in Markham falls under Ontario Building Code §9.22 and CSA B365. Cleaning is permit-exempt; structural or liner work is not.
Typical
$1,421–$2,274
Duration
1 day
Freeze-thaw
67/yr
Which rules apply
Ontario Building Code §9.22 (masonry chimneys), CSA B365 (solid-fuel installations), and WETT SITE-Basic scope cover most liner install work. Insurers typically ask for the WETT report post-completion; municipalities ask for permit sign-off pre-cover.
Permit thresholds in Markham
Markham building services generally require a permit for any structural masonry, liner replacement, or new appliance install. Cleaning, cap replacement, and cosmetic work are permit-exempt. Turnaround for over-the-counter permits is usually 5–10 business days.
Certifications that carry weight
WETT SITE-Comprehensive, CSIA CCP or CCS, and WSIB clearance are the three signals adjusters and buyers accept without pushback. HRAI membership adds credibility on venting work.
Common questions
Do you need a permit for liner install in Markham?
Cleaning and inspection are permit-exempt in Markham. Structural masonry, liner replacement, or a new appliance install typically need one — we pull it as part of the job when required.
What warranty do you offer on liner install in Markham?
Five-year written workmanship warranty on materials and labour, transferable to a new homeowner within that window. Manufacturer warranties on any installed products pass through separately.
How long does liner install take in Markham?
1 day is typical for a straightforward job. Bookings in dense downtown zones add 15–20 minutes for parking and staging.
When's the best time of year for liner install in Markham?
Late September through mid-November with Markham averaging 148cm of snow starting December. Spring (April–May) is the second window and often 10–15% cheaper.
How much does liner install cost in Markham?
Most Markham jobs land between $1,421 and $2,274. Complex access or heritage masonry can reach $3,695. We quote fixed price after a free on-site scope.
Do you offer same-day liner install in Markham?
Usually — call before 9am and we'll confirm a same-day arrival window inside Markham for most standard scopes.
Are you WETT and WSIB certified?
Yes — WETT SITE-Comprehensive #C-46082, CSIA #12408, and active WSIB #7248194. Certificates emailed on request before the job.
What if it rains or snows on the booking day?
Roof-side work reschedules to the next dry window at no charge. Interior scopes (firebox, damper, appliance) proceed regardless.
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