Chimney flue liner and relining

Assess flue, liner, connected appliance, fuel, draft, condensation and clearances before choosing relining or repair.

VERT / GREEN

Keep sweep/inspection report and model of each connected appliance.

JAUNE / YELLOW

Mortar debris, cracks or appliance changes can make an existing flue unsuitable even if the chimney looks sound outside.

ROUGE / RED

Cracked flue, chimney fire, soot/CO, incompatible appliance or liner modification: do not use before appropriate professional inspection.

System triage

Mortar debris in firebox/flue
Inspect liner condition before continued use. Fuel/appliance changed
Revalidate flue size, temperature, draft and compatibility. Prior chimney fire
Professional inspection before reuse. Recent satisfactory inspection
Archive report, maintenance and connected appliance.

What the professional checks

The chimney/appliance professional checks flue integrity, liner, sizing, draft, clearances, connections and system compatibility.

Official sources

RBQ — guide des installations existantes de cheminée

Vérifié / checked: 2026-08-23

V14

Systems to check before closing the work

V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.

Renovation dependenciesRoof penetrations and flashingCode versions

V15

Remaining system checks not to miss

V15 covers issues that can block a project, cause a loss or become expensive once concealed.

Before closing wallsFireplace, stove and chimneyPost-renovation commissioningCodes + climate by province

V33

Invisible constraints before work

V33 checks electrical, legal, environmental and climate constraints that can block a project before demolition starts.

Migratory-bird nests and renovation work

V47

V47 interfaces not to miss

These details are small on a drawing but can control water, structure or durability.

Chimney crown/cap