Flue sweeping in a condo: who does it, who pays

The flue crossing the building is common; the one crossing the flat is not. The whole split sits in that sentence — and so does the insurance.

It is a forgotten subject until the claim. A flue fire, a carbon monoxide incident, cover refused for want of a certificate: sweeping interests nobody until the day it decides who pays.

The sharing rule is simple, provided you know where the flue runs.

Collective flue, private flue

The collective flue — serving several homes and running through the building to the roof — is part of the common areas. Its sweeping is arranged by the manager and paid by the association, like any maintenance service.

The connecting flue, running from the occupant’s appliance to the collective flue, remains the occupant’s responsibility. Same building, same chimney, two distinct duties.

Frequency is not the same for everyone

For a collective installation, expected maintenance is markedly more frequent than what many buildings practise: several interventions a year, and as often as use requires. Local rules can tighten this, which explains differences between municipalities.

The board need not decide alone: it asks the manager what applies to the building and checks the maintenance contract matches. See writing a maintenance specification.

The certificate is what counts

Each intervention produces a certificate issued by the professional. It serves twice: to prove maintenance to the insurer after a claim, and to establish that the association met its duty.

A certificate sitting in the manager’s file protects nobody on the day it must be produced. It belongs with the building’s documents, with its date. See keeping documents.

After a chimney fire, the insurer’s first question is not “what burned” but “where is the last certificate”.

Disused flues, the real trap

Many older buildings keep disused flues: bricked-up fireplaces, sealed hearths, ducts reused for ventilation. They are no longer maintained, sometimes no longer identified — and they still exist structurally.

• A disused but unsealed flue creates parasitic draught and odours.
• A flue reused for a recent appliance may no longer suit the fuel.
• An unmaintained chimney stack becomes a roof leak point.
• An unauthorised connection to a collective flue endangers the other homes.

The last point alone justifies a survey: a board discovering three undeclared installations on the day of a claim has no room left. See the annual building walk-through.

What to check this year

• Does a maintenance contract exist, and does it cover every collective flue?
• Are the certificates for the last two years available?
• Are disused flues identified and sealed?
• Have occupants been told what remains theirs to do?

The last point is communication, not law: a written reminder before winter settles most situations and avoids arbitrating afterwards. See communicating with owners.

And for tenants?

Routine maintenance of the flue serving the home falls to the occupant, hence the tenant where the lot is let. The collective sweeping cost falls into rechargeable charges under the applicable rules. See rechargeable charges.

Keep your certificates with CoproHarmony

CoproHarmony keeps maintenance contracts, certificates and intervention reports with their dates, available to the board without asking the manager. Create your free space.