VERT / GREEN
Keep sweep/inspection report and model of each connected appliance.
Chimney flue liner and relining
Assess flue, liner, connected appliance, fuel, draft, condensation and clearances before choosing relining or repair.
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
What the professional checks
The chimney/appliance professional checks flue integrity, liner, sizing, draft, clearances, connections and system compatibility.
Official sources
Vérifié / checked: 2026-08-23
Explore: Systems to check before closing the work
Systems to check before closing the work
This section connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
Explore: Remaining system checks not to miss
Remaining system checks not to miss
This section covers issues that can block a project, cause a loss or become expensive once concealed.
Explore: Invisible constraints before work
Invisible constraints before work
This section checks electrical, legal, environmental and climate constraints that can block a project before demolition starts.
Explore: V47 interfaces not to miss
V47 interfaces not to miss
These details are small on a drawing but can control water, structure or durability.