17 August 2026
The Passive Fire Protection Maintenance Gap: Why So Many Buildings Are Non-Compliant and What FMs Need to Do About It
Passive fire protection does not make a noise when it stops working. There are no warning lights, no error codes, no system alerts. A fire door with a damaged intumescent seal looks exactly like one that will perform as designed – right up until the moment it does not. That invisibility is precisely why the maintenance gap in passive fire protection is so wide, and why so many buildings are carrying compliance risk that nobody on site is aware of.
What passive fire protection actually does
Unlike active systems – sprinklers, alarms, suppression – passive fire protection works through the fabric of the building itself. Fire doors, intumescent seals, cavity barriers, fire stopping around penetrations, dampers in ductwork and service risings. These elements do not suppress a fire. They contain it, slow its spread, and protect the escape routes that building occupants depend on.
When they work, they are invisible. When they fail, the consequences can be catastrophic – and the failure is rarely sudden. It accumulates through years of poor maintenance, unauthorised alterations, and inspections that were either not carried out or not carried out properly.
Why the gap exists
The maintenance gap is not primarily a knowledge problem. Most facilities managers understand in principle that passive fire protection requires regular inspection and upkeep. The gap exists for several other reasons.
First, responsibility is often unclear. In multi-tenanted buildings, the boundary between landlord and tenant obligations for fire doors, service penetrations, and compartmentation can be genuinely ambiguous – and ambiguity tends to resolve itself as inaction.
Second, passive fire works are frequently treated as a one-off rather than an ongoing commitment. A building might receive a thorough inspection at practical completion or at a lease event, with the assumption that the work done then remains valid indefinitely. It does not. Fire doors are opened and closed hundreds of times a day. Intumescent products degrade. Penetration seals get disturbed every time a contractor runs a new cable.
Third, the specialist nature of the work means it falls between the cracks of general FM contracts. A maintenance contractor without specific passive fire competence will not identify defects that a trained inspector would catch immediately – and in many cases, will not be looking for them at all.
What the regulatory picture looks like
The Building Safety Act 2022 and the Fire Safety (England) Regulations 2022 have materially raised the bar for building owners and responsible persons, particularly in higher-risk residential buildings. But the obligations are not limited to high-rise residential. Any building subject to the Regulatory Reform (Fire Safety) Order 2005 – which covers virtually all non-domestic premises and the common parts of multi-occupied residential buildings – requires a suitable and sufficient fire risk assessment, and passive fire protection is a central component of that assessment.
What has changed is the scrutiny. Enforcement activity by the Fire and Rescue Service has increased. Insurers are asking harder questions about inspection records and remediation programmes. And in the wake of high-profile building safety failures, the reputational and legal exposure for responsible persons who cannot demonstrate adequate maintenance has never been greater.
Documentation matters as much as the physical condition of the building. A well-maintained asset with no inspection records is, from a compliance perspective, almost indistinguishable from one that has never been touched.
What FMs need to do
The starting point is an honest assessment of where a building actually stands. That means commissioning a passive fire protection audit carried out by a competent, accredited inspector – not relying on a general fire risk assessment that may not have examined compartmentation, penetration seals, or damper condition in adequate detail.
From there, a remediation and maintenance programme needs to be built into the FM contract as a standing commitment, not a one-off exercise. Inspection frequencies should reflect the building type, occupancy, and usage intensity. Defects identified need to be tracked through to completion, not logged and left open.
Contractor competence is non-negotiable. Third-party accreditation schemes exist for passive fire protection installers and inspectors, and specifying accredited contractors is the clearest way a responsible person can demonstrate due diligence if their decisions are ever scrutinised.
The cost of inaction
The businesses and building owners that defer passive fire maintenance on cost grounds are not saving money. They are accumulating liability. The cost of a properly structured inspection and maintenance programme is a fraction of the cost of enforcement action, insurance complications, or the legal and reputational consequences of a fire in a building that was not compliant.
More importantly, passive fire protection exists for one reason. When it is not maintained, people are at greater risk. That is the clearest possible argument for treating it as a priority rather than a line item to be managed down.
Talk to CoSourced
CoSourced delivers passive fire protection inspection, maintenance, and remediation services to commercial and multi-site customers across the UK. Our engineers are trained to identify defects that general maintenance programmes routinely miss, and we work with building owners and facilities managers to build structured inspection programmes that meet regulatory obligations and create a clear, auditable service record.
If you are unsure whether your current passive fire provision is adequate – or if you know it needs attention and want to understand the options – we would welcome a conversation.
Get in touch with the CoSourced team to discuss a passive fire maintenance programme for your estate.
