Storm Damage Guide · Markham
Storm Damage Guide: Roof Cleaning After Severe Weather in Markham
Here's how Markham homeowners actually approach roof cleaning 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
The three signs Markham homeowners keep missing on roof cleaning: smell changes, staining above the firebox, and unusual sound. Any one means schedule; two together means stop-use.
Typical
$293–$469
Duration
2–4 hrs
Freeze-thaw
67/yr
Signs the roof cleaning can't wait
The most reliable early warnings on Markham homes: smell changes near the appliance, staining above the firebox or on interior ceilings, unusual soot at the cap, and any water inside the smoke chamber. Any one of these is a call — two together is a stop-use.
The 90-second self-check
Look at the cap for gap or crushing, walk the crown for hairline cracks (67 freeze-thaw days a year here will find any weakness), and shine a light up the flue for glazing. Photograph anything unclear and text it over.
When to stop using the appliance
Any active water ingress, visible flame licking outside the firebox opening, or the smell of gas products in the room means shut down and call. Insurance coverage on damage during "known unsafe operation" is thin.
Common questions
Do you need a permit for roof cleaning 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.
How much does roof cleaning cost in Markham?
Most Markham jobs land between $293 and $469. Complex access or heritage masonry can reach $762. We quote fixed price after a free on-site scope.
What warranty do you offer on roof cleaning 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.
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.
When's the best time of year for roof cleaning 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 long does roof cleaning take in Markham?
2–4 hrs is typical for a straightforward job. Bookings in dense downtown zones add 15–20 minutes for parking and staging.
Is roof cleaning covered by home insurance in Markham?
Sudden damage (storm, animal, appliance failure) is usually covered minus deductible. Gradual wear generally isn't. A written pro assessment before the claim call materially improves outcomes.
Do you service condos and heritage homes in Markham?
Yes. Condo boards in Markham typically want a scope letter and insurance certificate 48 hours out; heritage properties need product substitutions we pre-source.
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