15 X 4mm 1/2 Hr Plain Intumescent Fire Strip Brown 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 Brown 2.1m Length
Ensuring the safety of your building occupants remains the highest priority for any facility manager or homeowner. Our 15 X 4mm 1/2 Hr Plain Intumescent Fire Strip Brown 2.1m Length offers a robust solution for maintaining the integrity of fire doors. This essential safety component is designed to remain discreet and dormant during daily use while providing instantaneous protection when a fire emergency occurs.
When exposed to intense heat, the internal core reacts to seal gaps between the door and the frame. This action effectively stops the passage of smoke and hot gases from entering hallways or adjacent rooms. By choosing this high quality seal, you are investing in a proven barrier that helps contain fire hazards, giving occupants precious time to evacuate safely.
Understanding the Mechanical Physics of Fire Seals
The core technology behind this model relies on the principles of thermal expansion. The strip contains a sophisticated intercalated graphite compound. When the ambient temperature rises during a fire, this material undergoes a rapid physical transformation. It expands multi-directionally up to 15 times its original volume.
This expansion exerts significant pressure within the rebate, effectively locking the door leaf against the frame. This force is critical because it prevents the door from warping under thermal stress. The structural design ensures that the seal remains stable throughout the fire duration, maintaining the seal even as the fire intensity increases. By creating an airtight barrier, the material suppresses oxygen flow to the fire source, which is a key factor in limiting flame spread.
Step by Step Installation Workflow
Installing this item correctly is vital for regulatory compliance and safety performance. Follow these steps to achieve a professional finish that meets building standards.
- Start by checking your door manufacturer instructions to ensure that 15x4mm is the correct specification for your particular fire door setup.
- Clean the existing rebate on the door frame or the door edge to remove all dust, grease, and wood shavings that might interfere with the adhesive bond.
- Measure the required length for the two vertical jambs and the top head of the door frame.
- Use a sharp hacksaw or a high quality cutting blade to trim the strip to the precise length needed for a clean fit.
- Remove the protective backing from the self-adhesive strip and press the seal firmly into the centre of the prepared rebate.
- Verify that the surface of the strip sits flush with the door or frame edge so that it does not cause resistance when the door closes.
Ergonomic Safety and Regulatory Compliance
Utilising this product assists in meeting strict safety legislation requirements such as those dictated by building control and fire safety officers. Fire doors are designed to be a complete system and the seal acts as the final line of defence in that system. Installing this component reduces the risk of smoke inhalation, which is the primary cause of fatalities in structure fires.
Beyond life safety, this item is designed with ease of maintenance in mind. Its mineral based construction means it is safe to handle without the need for specialised protective gear like gloves or respirators. This makes it a preferred choice for contractors who want to avoid the risks associated with older, fibrous, or chemically volatile alternatives.
Commercial ROI and Long Term Asset Protection
Investing in high-grade fire hardware is a strategic decision for any commercial property. High quality equipment like this 15x4mm strip is built to withstand extreme environmental conditions over decades. Because the material is unaffected by moisture, humidity, and common household chemicals, it does not degrade or perish like cheaper alternatives.
Laboratory ageing tests demonstrate that this material can maintain its structural integrity for over 100 years. This longevity translates into a significantly lower total cost of ownership. You will save on the labour and material costs associated with frequent replacements, while simultaneously ensuring your building remains protected against fire risks for the long term.
Application Uses and Versatility
This product is engineered to suit a variety of architectural settings. Whether you are fitting out a residential flat, an office block, or a healthcare facility, this seal provides reliable coverage for a range of door configurations.
- It is perfectly suited for use on standard single leaf doors that require 30 minute fire resistance ratings.
- This model is ideal for double leaf doors, providing a continuous protective barrier where the two door leaves meet.
- The product is specifically rated for FD30 fire door applications, ensuring you meet the necessary safety certification for your project.
- It serves as a dual-purpose barrier, protecting your premises against both the thermal threat of fire and the silent danger of smoke inhalation.
Technical Specifications
Understanding the technical parameters is essential when selecting hardware for fire protection. Refer to the table below for the specifications of this unit.
| Feature | Specification |
|---|---|
| Dimensions | 15mm wide by 4mm deep |
| Length | 2.1 metres per strip |
| Fire Rating | 30 Minutes (FD30) |
| Expansion Ratio | 10 to 15 times original size |
| Material | Mineral based, intercalated graphite |
| Approval | Certifire approved CF846 |
| Testing Standards | BS 476 part 22 and BS 476 part 31.1 |
Why Choose Our Fire Seals
Our commitment to safety means that every product we supply is backed by rigorous testing. We understand that in an emergency, your hardware must perform without question. That is why our seals are fully traceable, with identification markings on every piece to ensure you know exactly what you are installing.
If you are not sure if this fire seal is right for your requirements please contact our friendly team today. Our technical experts are available to provide guidance on compatibility, building regulations, and installation best practices to ensure your project meets all necessary safety standards.
By choosing this 15x4mm strip, you are securing a product that is designed for rapid activation. Its multi-directional expansion capability ensures that the fire door remains securely in place even when exposed to the high pressures generated by a developing fire. Do not leave your fire safety to chance when reliable, certified protection is available for your doors.
Our goal is to support your project from selection to installation. With our extensive range of fire safety components, we can help you keep your premises secure, compliant, and protected. Order your fire strips today and benefit from our industry-leading quality and fast delivery service across the country.
Specification
| Manufacturer | Firestop |
|---|---|
| Finish | Brown |

