15 X 4mm 1/2 Hr Smoke Seal Intumescent Fire Strip White 2.1m Length
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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 Smoke Seal Intumescent Fire Strip White 2.1m Length
Protecting your property and occupants against the devastating effects of fire requires precision hardware that performs flawlessly under extreme pressure. This 15 X 4mm 1/2 Hr Smoke Seal Intumescent Fire Strip White 2.1m Length serves as a vital barrier in the event of a structural blaze. Engineered to bridge the critical gap between a door leaf and its surrounding frame, this seal creates a robust, airtight perimeter that blocks the ingress of smoke, hot gases, and flames.
When fire strikes, time is the most valuable commodity. This high quality product remains dormant and unobtrusive throughout its long service life, blending seamlessly into your existing door architecture. Its true power lies in its ability to activate immediately upon detecting the specific thermal signatures associated with a fire, ensuring that your passive fire protection strategy remains active at the precise moment it is needed most.
Understanding the Science of Fire Containment
At the heart of this component is a highly advanced intumescent core formulated with intercalated graphite. Unlike older, less efficient materials, graphite exhibits a unique physical reaction when subjected to intense thermal energy. As temperatures rise within the room, the internal structure of the seal undergoes a rapid chemical transformation.
This expansion is not merely linear, as the core grows multi-directionally up to fifteen times its original physical volume. This forces the material to fill every void, crevice, and irregular surface between the door and the frame. By exerting high pressure against the door edge, it locks the barrier firmly into position, which drastically restricts the pathway for oxygen to reach the fire while simultaneously preventing smoke from migrating into protected escape routes or adjacent rooms.
Key Features for Professional Installation
- The brush pile height is precisely set at 5.5mm to allow for smooth door operation without compromising the sealing efficiency against cold smoke.
- This item is manufactured from high performance, medical grade polypropylene to ensure it maintains structural integrity under fluctuating environmental conditions.
- You will find the rapid expansion properties are ideal for containing fire within a compartment until professional assistance arrives.
- The mineral based composition means it is safe to handle during the installation process, as it contains no fibrous materials that could irritate the skin or lungs.
- The material is chemically inert, meaning it remains unaffected by moisture, high humidity, or common household cleaning agents.
- Laboratory testing confirms a projected lifespan of over 100 years, making this an exceptional investment for long term facility management.
- A high strength, self-adhesive backing is pre-applied to the rear surface to ensure the seal remains secure within the rebate for the duration of its lifecycle.
- Every individual unit includes clear identification marks to provide full traceability in accordance with strict building regulations and safety standards.
Operational Workflow for Efficient Fitting
Installing this hardware correctly is essential to the fire rating of your assembly. Begin by selecting the appropriate rebate size, as this equipment is designed to sit flush within a professionally routed groove. Ensure the surface is entirely free of dust, grease, or paint residue, as any microscopic debris could interfere with the long term bonding of the self-adhesive backing.
Measure your door height and head rail carefully, cutting the strip to size using a sharp hacksaw or a high quality blade. When positioning the seal, it should be placed centrally within the frame or door edge. Press the strip firmly into the rebate to activate the pressure-sensitive adhesive. It is critical that the seal does not protrude beyond the surface, as this would prevent the door from latching correctly or cause unnecessary wear and tear on the door furniture.
Important Safety Reminder You must fit the correct size of intumescent seal as specified by your door manufacturer. Fitting the wrong size can invalidate your fire certification and compromise the performance of your door set during an emergency. Always consult the manufacturer instructions if you are unsure.
Health, Safety, and Compliance Benefits
Adhering to safety protocols is a necessity for commercial building managers and homeowners alike. By utilising this 15 X 4mm 1/2 Hr Smoke Seal Intumescent Fire Strip White 2.1m Length, you ensure that your building meets current British standards for fire safety. The inclusion of the smoke-sealing brush pile provides a critical secondary layer of protection against toxic fumes, which are often the primary cause of fatalities in fire incidents.
Using high quality hardware helps reduce physical fatigue for building occupants by ensuring doors operate smoothly and reliably. When doors are properly sealed and balanced, the operational stress on hinges and closers is reduced, preventing structural fatigue that could eventually lead to a door failing to close under its own weight. Compliance is not just about avoiding fines, it is about creating a resilient environment where passive safety features function exactly as designed.
Commercial ROI and Long Term Value
Investing in premium intumescent protection is a sound fiscal decision for any property owner. Because this product is engineered to last for decades, it significantly minimises the need for frequent replacement cycles. Lowering your maintenance overheads while increasing the fire safety rating of your assets creates a superior return on investment.
Furthermore, protecting your doors from structural failure during a heat event can prevent expensive, irreparable damage to the door assembly itself. By limiting the movement of fire between rooms, this hardware acts as a high value insurance policy for your fixtures and fittings. The reliability of this product translates into peace of mind, knowing that your facility remains protected by industry-leading technology.
Technical Specifications
| Feature | Specification |
|---|---|
| Seal Width | 15mm |
| Seal Depth | 4mm |
| Brush Height | 5.5mm |
| Length | 2.1 metres |
| Expansion Ratio | Up to 15 times original size |
| Fire Rating | 30 Minutes FD30 |
| Material | Graphite-based Intumescent with Polypropylene Brush |
| Standards | BS 476 Part 22 and Part 31.1 |
| Certification | Certifire Approved CF846 |
Why Choose This Solution
The 15 X 4mm 1/2 Hr Smoke Seal Intumescent Fire Strip White 2.1m Length represents the gold standard in fire door containment. Its ability to combine a high pressure expansion core with a precision-engineered smoke brush provides comprehensive protection for both life and property. As it has been tested and certified against the most rigorous standards, including TS35 and TS21, you can trust this product to perform when the stakes are at their highest.
Whether you are upgrading a single internal door or managing a large scale commercial fire safety refit, this hardware offers the consistency and durability required to keep your environment safe. Its ease of application, coupled with its long service life, makes it a preferred choice for installers and contractors across the country.
Get Expert Advice Today
Selecting the right safety hardware requires careful consideration of your specific door type and fire safety plan. If you are not sure if this fire seal is right for your requirements please contact our friendly team today. We are here to provide the technical guidance you need to ensure every door in your building is fully compliant and adequately protected.
Specification
| Manufacturer | Firestop |
|---|---|
| Finish | White |

