Ducts and fire separations: dampers, access and continuity
When a duct crosses a fire separation, do not treat the opening as an ordinary penetration: damper need, type and access depend on the assembly and applicable code.
Decision triage
VERT / GREEN · JAUNE / YELLOW · ROUGE / RED
What the professional checks
The specialist checks fire-resistance rating, duct/opening type, damper requirement or exception, listing, position, retention, access and compatible fire stopping.
Official sources
Sources checked: 2026-08-24
Related path
Continue with the right tools
These links connect this page to the next useful checks and decisions without repeating the full content.
Screen hazardous materialsKnow when to stop and assess asbestos, lead, vermiculite, mould, silica or radon.Open →Track indoor air qualityLog CO₂, radon, PM2.5, humidity and temperature without turning readings into diagnoses.Open →Prepare the emergency sheetDocument controls, equipment, contacts and critical locations in a printable format.Open →Score home resiliencePrioritize water, outages, fire, climate, health and essential records.Open →Sort observed symptomsConnect a visible sign to plausible causes, urgency and the right professional.Open →
Manage the project through closeout
V14
Systems to check before closing the work
V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
V17
Specialized systems to cross-check
V17 completes gas, soil, water, fire, climate and structural interfaces.
V26
Often-overlooked service interfaces
V26 connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.
V32
Post-disaster and legacy systems
V32 connects contamination, storm damage, legacy materials and recommissioning before rebuilding.