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Fire Door Seals: Small Part, Big Protection

Fire Door Seals

Fire door seals might look like an afterthought, but they’re one of the most important parts of any fire safety system. These small strips fitted around the edge of a fire door expand during heat, sealing the gap between the door and the frame. This slows the spread of smoke and fire, and can mean the difference between safe evacuation and disaster.

While the door leaf and frame get most of the attention, fire door seals are a compliance requirement under Australian Standards. Without them, your fire doors simply aren’t doing their job.

Let’s dive into why fire door seals matter, what the Building Code requires, common problems we find in Sydney buildings, and how to keep them in top condition.

Why Fire Door Seals Matter

Fire door seals are designed to:

  • Block smoke and toxic gases in the early stages of a fire
  • Expand during high heat to seal off flames
  • Maintain compartmentalisation between building sections
  • Support fire door certification by ensuring full compliance

Even a tiny gap can let smoke through. Since most fire fatalities are due to smoke inhalation rather than flames, fire door seals are one of the most effective passive fire protection measures you can have.

Types of Fire Door Seals

There are a few different kinds of seals you’ll find in compliant fire doors:

  1. Intumescent Seals
    • Expand when exposed to heat
    • Prevent flames from spreading
  2. Smoke Seals
    • Made from flexible brush or rubber
    • Stop smoke leakage even before the heat builds
  3. Combined Seals
    • Provide both smoke and fire resistance
    • Often used in high-risk or multi-tenant buildings

Depending on your building, you may need a specific type of seal to meet compliance.

Fire Door Seals and the Building Code of Australia

The Building Code of Australia (BCA) and AS1905.1 standards are clear: fire doors must have appropriate seals as part of the tested and certified assembly. Installing a fire door without seals is non-compliant and unsafe.

Strata managers, commercial property owners, and industrial facility managers are legally required to ensure fire doors, including their seals, are inspected, maintained, and certified annually as part of the Annual Fire Safety Statement (AFSS).

Common Problems with Fire Door Seals

At Comprehensive Fire Services, we regularly see the same issues crop up during inspections:

  • Missing seals (sometimes never installed)
  • Damaged seals from wear and tear
  • Painted-over seals that stop them from working
  • Incorrect retrofits with non-rated materials
  • Seals peeling off due to poor installation

Any of these issues can void the certification of your fire doors, which means non-compliance and potential fines.

How Often Should Fire Door Seals Be Checked?

Fire door seals should be checked at least once a year as part of your annual inspection. In high-traffic areas like apartment blocks, shopping centres, or hospitals, seals may need more frequent maintenance.

Routine checks should look for:

  • Cracks, splits, or warping
  • Loose or missing sections
  • Evidence of tampering or repainting
  • Gaps wider than regulations allow

If there’s any doubt, replace them immediately. The cost of a seal is minimal compared to the risk of non-compliance.

Fire Door Seals in Strata Buildings

For strata managers, fire door seals are often overlooked because they’re small and easy to miss. But every apartment door opening into a shared corridor must comply. If even one door has faulty seals, your entire building could fail its AFSS audit.

That’s why we always recommend setting up a proactive inspection plan to catch seal issues early. It keeps tenants safe, prevents headaches, and protects your compliance record.

Why Professional Installation Matters

Fire door seals aren’t just a strip you stick on and forget. They must:

  • Be installed in the correct location (frame or door leaf)
  • Match the tested fire door assembly
  • Be fitted by licensed professionals

DIY fixes or handyman jobs can void compliance. Always use a certified provider to ensure seals work exactly as they’re supposed to during a fire.

How CFS Can Help with Fire Door Seals

At Comprehensive Fire Services (CFS), we know that little details make the biggest difference in fire safety. We provide:

  • Fire door inspections including seal checks
  • Supply and installation of compliant fire door seals
  • Repairs and replacements using certified materials
  • Annual Fire Safety Statement support and documentation

Whether you manage a strata block, a warehouse, or a high-rise office, we’ll ensure your fire door seals are up to code and ready to perform when it matters most.

Stay Safe and Compliant

Don’t underestimate the importance of fire door seals. They may be small, but they’re crucial for safety, compliance, and peace of mind.

Call Now: 0418 749 488
Contact Us Now: firedoorspecialists.com.au/contact-us

Let our team inspect your fire door seals and provide a compliance plan tailored to your building. Protect your property, protect your tenants, and protect yourself from liability.

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troy cohen profile picture
troy cohen
00:46 21 Jun 23
Comprehensive Fire Services are the specialists for Fire Door installation and rectification. Joes in depth knowledge of building codes and installation standards is an asset as when doing a job, its done right. I’ve had nothing but a positive experience with the team at CFS with them completing 500+ jobs for our business, the quality of work and attention to detail is second to none. I highly recommend there services!
Murray Allan profile picture
Murray Allan
00:21 21 Jun 23
Joe has helped me with several installations and repairs of fire doors and passive fire systems. He is always on time, quotes are prompt, and the work is always exceptional (especially his doors!). Would recommend his services to anyone.
George Feggaris profile picture
George Feggaris
02:40 19 Jun 23
I have been working with Comprehensive Fire Services since 2012, there knowledge, expertise and quality workmanship and attention to detail is amazing.

Always on time, site is always left clean at the end of each job.

There is no other team I would use.

I would highly recommend CFS if you want the job done right.

SPM Facilities Management
Greg Clayton profile picture
Greg Clayton
23:41 18 Jun 23
Outstanding Service
Highly recommend Comprehensive Fire Services. There work is always of high quality, along with impeccable customer service.
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