15 X 4mm 1/2 Hr Plain Intumescent Fire Strip White 2.1m Length
In stock
Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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Description
15 X 4mm 1/2 Hr Plain Intumescent Fire Strip White 2.1m Length
Safety is the cornerstone of any architectural project, and ensuring your premises meet stringent fire regulations is not just a legal requirement but a moral duty. The 15 X 4mm 1/2 Hr Plain Intumescent Fire Strip White 2.1m Length is an essential component for passive fire protection. Designed to safeguard lives and property, this high quality strip provides a robust barrier against the spread of smoke and heat.
When integrated into fire door assemblies, this device remains inconspicuous during day to day operations. However, in the unfortunate event of a fire, it becomes a vital line of defence. By expanding rapidly upon exposure to heat, it seals the critical gaps around door perimeters. This action preserves the integrity of the door assembly, effectively slowing the progression of flames and smoke into escape routes and adjacent rooms.
Understanding the Mechanical Physics of Fire Seals
The core technology behind this equipment relies on the unique chemical properties of intercalated graphite. Unlike older, less efficient materials, this substance acts as a dormant guard that waits for the precise thermal threshold to be met before engaging. Once the ambient temperature rises during a blaze, the internal core undergoes a rapid physical transformation.
It expands in a multi-directional manner, increasing in volume by up to fifteen times its initial size. This physical force exerted by the expansion is significant, as it creates a high-pressure seal that grips the door edge and the frame channel simultaneously. By creating this high-density barrier, the strip effectively closes off gaps where smoke, which is often more lethal than the fire itself, would otherwise bypass the door. The structural integrity of this expansion is designed to remain rigid under intense heat, ensuring the seal does not simply fail or blow out when the fire door is under pressure from smoke currents.
The Operational Workflow for Installation
Professional installation is critical to ensure that your fire safety hardware functions as intended during an emergency. Following a clear, methodical process will help you achieve a secure and compliant fit. Begin by preparing the door or frame, ensuring the rebate is clean and free from any residue, dust, or oils that might hinder the adhesive bond.
Measure the required length accurately, accounting for the corners where the horizontal and vertical segments meet. Use a fine-toothed hacksaw to cut the strip to the exact dimension. The aim is a seamless join where the materials abut, leaving no gaps for smoke to escape. Once cut, remove the protective self-adhesive backing carefully, ensuring you do not touch the adhesive surface to maintain its bond strength. Press the strip firmly into the rebate, checking that it sits flush and does not protrude beyond the surface, as a protruding strip could impede the smooth operation of the door or cause premature wear during daily use.
Ergonomic Health, Safety, and Regulatory Compliance
Choosing certified fire protection equipment is a decision that impacts the long term safety of building occupants. Our product is tested to meet the rigorous demands of British standards, specifically BS 476 part 22 and 31.1. This compliance provides peace of mind that the hardware has been subjected to extreme conditions and has proven its ability to perform under pressure.
Using this strip helps facility managers and building owners reduce the risk of non-compliance, which can lead to severe legal penalties and, more importantly, compromised safety. Because the material is mineral based and free from harmful fibres, it is safe to handle during installation, which reduces the health risks to maintenance staff and contractors. The ergonomic design focuses on simplicity, allowing for efficient retrofitting or initial installation without the need for specialised, complex tools, thereby ensuring that safety standards are consistently met across an entire building portfolio.
Commercial ROI and Long Term Value
Investing in high quality fire safety hardware is a strategic choice that pays dividends over time. While the initial cost of procurement is a factor, the longevity and durability of this particular model ensure that the total cost of ownership remains low. With laboratory ageing tests indicating a life expectancy of over a century, you are unlikely to need frequent replacements, which keeps operational overheads to a minimum.
This durability is especially valuable in high-traffic commercial environments where doors are used constantly. Because the material is resistant to humidity, atmospheric pollution, and standard cleaning chemicals, it will not degrade, crack, or lose its effectiveness over time. Protecting your assets from the catastrophic loss associated with fire damage is the ultimate return on investment. By installing reliable, industry-standard seals, you are not just ticking a box for a fire inspector, you are providing a long-lasting insurance policy for your physical infrastructure.
Technical Specifications
| Feature | Specification |
|---|---|
| Dimensions | 15mm width x 4mm depth |
| Length | 2.1 metres |
| Fire Rating | 30 minutes (FD30) |
| Expansion Ratio | Up to 10-15 times original size |
| Material | Intercalated graphite core |
| Installation Method | Self-adhesive backing |
| Certification | Certifire CF846, BS 476 |
Key Features and Benefits
- The multi-directional expansion capability ensures that the gap between the door and frame is completely sealed in fire conditions.
- The mineral based construction offers a safe handling experience by excluding harmful chemicals and fibrous particulates.
- This model is highly resistant to environmental factors like moisture and humidity, ensuring it remains effective even in challenging climates.
- With an expected lifespan exceeding one hundred years, you can rely on this hardware for the long term safety of your facility.
- Every strip comes with a high-tack self-adhesive backing, allowing for a fast and efficient application process that saves time during installation.
- Full traceability is provided through individual product identification, which is essential for audit trails and safety inspections.
Important Notice: Proper installation is paramount. Always ensure you are using the correct size intumescent strip as specified by the door manufacturer. The seal must be placed centrally in the frame or door rebate. It should be applied to both vertical jambs and the head, but there is no requirement for a seal at the bottom of the door.
Not sure if this Fire seal is right for your requirements?
Selecting the right fire safety components can be complex given the variety of door configurations and fire ratings required by modern building regulations. If you are not sure if this fire seal is right for your requirements please contact our friendly team today. We are committed to helping you find the perfect solution for your specific safety needs.
Specification
| Manufacturer | Firestop |
|---|---|
| Finish | White |

