Oshawa & Durham Region
Chimney Liner Installation in Oshawa
The liner is what separates combustion gases from the structure of your house. If it is missing, cracked or badly sized, heat and acidic condensate reach the masonry and the framing behind it. Unlined or failed clay-tile flues are the most serious defect we find in older Oshawa and Whitby homes, and they are almost always invisible without a camera.
Typical range $2,200 – $4,800· Flat written price before we start
Get a price for chimney liner installation
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Same-week chimney and fireplace bookings across Durham Region
Flat, written pricing confirmed before a single tool comes out
WETT-certified, insured, background-checked technicians
Photo-documented safety report emailed after every visit
What we do
Chimney Liner Installation in Oshawa — how it works
A stainless steel liner sized to the appliance restores draft, protects the masonry, and satisfies both TSSA requirements for gas and WETT expectations for solid fuel. Sizing matters as much as the material: an oversized flue on a modern high-efficiency appliance condenses and corrodes just as surely as no liner at all.
Signs you need this service
- A pre-1950 home converted to gas or oil with no liner installed
- Clay tile shards or fragments falling into the firebox
- Cracked or offset tiles visible on a camera scope
- A failed WETT or home inspection citing the liner
- A new insert, stove or high-efficiency appliance being installed
- White staining or damp on the chimney chase wall inside the house
What's included
- 316Ti or 304 stainless liner with lifetime warranty
- Insulation to maintain flue temperature and draft
- Top plate, storm collar and cap
- Post-install draft and spillage testing
- Written documentation for your insurer
Our process
Step by step, start to finish
- Step 1
Camera scope and measurement
Full flue video, height, offsets and interior dimensions recorded.
- Step 2
Appliance-matched sizing
Liner diameter calculated to the appliance output, not to the existing flue.
- Step 3
Flue preparation
Old tile broken out where needed, obstructions and offsets cleared.
- Step 4
Insulated liner install
Continuous stainless liner, insulation wrap or pour, top plate and cap fitted.
- Step 5
Connection and verification
Appliance connected, draft measured, documentation issued for insurance.
Pricing
Chimney Liner Installation in Oshawa cost
Real 2026 ranges for Durham Region. Your exact number is confirmed in writing after we see the chimney.
| Work | Typical range | What moves the price |
|---|---|---|
| Gas appliance liner | $1,800 – $3,200 | Flue height, diameter, offsets |
| Wood insert / stove liner | $2,400 – $4,200 | Insulated, 6 or 8 inch |
| Full masonry flue relining | $3,000 – $4,800 | Tile removal, insulation, height |
| Tile breakout / obstruction removal | $400 – $1,200 | Condition and access |
Local knowledge
What this looks like around Oshawa
Downtown Oshawa brick built before the war was designed for coal, then reused for oil, then for gas — often with no liner at any point. If your home predates 1950 and has an original stack, assume it needs scoping before you burn anything else in it.
In Clarington and Ajax we most often line for wood inserts. A large open masonry flue around a modern insert will not draft properly and will condense creosote fast; a correctly sized insulated liner solves both problems at once.
FAQs
Questions homeowners ask us
How much does a chimney liner cost in Oshawa?
$2,200 to $4,800 installed for most homes. Gas appliance liners at the lower end, insulated wood-appliance liners and full relines with tile breakout at the upper end. Flue height, offsets and diameter are the main drivers.
Do I legally need a liner?
Gas appliances vented into masonry must be lined to a properly sized flue under TSSA requirements, and solid-fuel appliances need a liner that meets the installation standard for your insurer's WETT documentation. In practice, unlined is not an option.
How long does a stainless liner last?
Quality 316Ti stainless with proper insulation carries a lifetime warranty and realistically outlasts the appliance it serves. Cheap thin-wall aluminium flex, which we do not install for solid fuel, does not.
How long does installation take?
Most single-flue liner installations are completed in one day. Relines that require breaking out old clay tile can extend into a second day.
Related services
Other work we do on Oshawa chimneys
Chimney Repair in Oshawa
Crowns, caps, repointing, flashing, smoke chamber and partial rebuild work.
View chimney repair in oshawa detailsWETT Inspection in Oshawa
Certified Level 1 and 2 inspections with reports insurers and brokers accept.
View wett inspection in oshawa detailsWood Stove & Fireplace Insert Installation in Oshawa
Insert and stove installs with insulated liner, code clearances and WETT paperwork.
View wood stove & fireplace insert installation in oshawa detailsBook chimney liner installation in Oshawa
Call (289) 906-3881 or send the form — flat written pricing, WETT-certified technicians, same-week appointments across Durham Region.