A failed fire damper: what happens next

By /

A failed damper with no retest booked is still a failed damper.

A fire damper sits inside a duct where it passes through a fire-resisting wall or floor. When a fire comes, it should close and stop fire and smoke travelling through the ductwork into the next compartment. When it fails its test, that gap is open until someone fixes it - and proves it.

What the rules ask

  • The law. In England and Wales, the Regulatory Reform (Fire Safety) Order 2005, Article 17, requires the responsible person to keep the facilities, equipment and devices provided for fire safety - fire dampers among them - maintained in efficient working order and in good repair (legislation.gov.uk, read 17 Oct 2026). Scotland: Regulation 16, Fire Safety (Scotland) Regulations 2006. Northern Ireland: Regulation 16, Fire Safety Regulations (Northern Ireland) 2010.
  • The standard. BS 9999:2017, Annex W, expects fire dampers to be tested by a competent person at least annually, and faulty dampers to be repaired or replaced immediately (as cited in BESA Technical Bulletin VH001, Fire and smoke damper maintenance, January 2020).
  • The trade guide. BESA's DW145 (2024) is the industry's good-practice guide on damper inspection and maintenance. BESA's own summary says inspection reports should record each non-compliance and the corrective action, with timescales (BESA). BESA also says testing must be backed by accurate, verifiable records and a full register showing the condition and location of each damper (BESA news, 24 Jun 2026).

"Immediately" is the word that matters. Not "at the next annual visit".

Where it goes wrong

The failure is rarely the test. It is what happens after:

  1. The engineer marks the damper failed on a sheet or a spreadsheet.
  2. The certificate for the site goes out Unsatisfactory.
  3. The repair is quoted, approved weeks later, and done.
  4. Nobody re-tests that one damper on a dated record - or the whole site is re-tested, and its annual dates all shift.

The building owner is left with a certificate that says Unsatisfactory and no paper that says it is now fixed. That is the record a fire risk assessor, an insurer or an enforcing officer will ask for.

What the record should show

For each failed damper:

  • Its own reference and location, the same as in the register (a dot on the location plan helps the next engineer find it).
  • The date it failed, what failed, and before-and-after photos.
  • The repair or replacement, and who did it.
  • A retest of that damper, with its own date and result.
  • Its next due date - which should stay tied to that damper, not reset the whole site.

And for the site: a certificate that went Unsatisfactory, then a record that the failed dampers were retested and passed.

How SMART Reports handles it

In SMART Reports, the damper register is imported from a spreadsheet and each damper keeps its own due date. See Fire damper testing and inspections. A failed damper gets a retest that moves only the dampers retested - the rest of the site keeps its annual dates. The site gets a Satisfactory or Unsatisfactory certificate plus a test report, a location plan with damper dots, and the legal line for the site's nation. Retests show in the planner under "due soon" until they are booked.

You can try it without signing up: the live demo has a tour called "Retest a failed damper", using a fictional sample firm.

Try the live demo

Fire damper testing and inspections is £90 a month for the whole firm - every engineer and office user included, no setup fee, no minimum term, no VAT charged, 14-day money-back guarantee. Any two report types £150.

Sources (read 17 Oct 2026; VH001 read 21 Oct 2026)

Written by Edward Bristow, an engineer of more than 15 years. Published 21 October 2026.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top