Intumescent Strips

Intumescent Strips for Fire Doors – Compliant and Effective

Intumescent strips are essential for passive fire protection, offering critical safety and compliance for fire-rated doors. Designed to expand when exposed to extreme heat, intumescent fire door strips fill the gaps around doors, helping to prevent fire and smoke from spreading.

These strips are ideal for various fire door applications, providing reliable containment in the event of a fire, helping occupants to evacuate safely, and assisting emergency personnel with fire control. Our stocked range of fire door intumescent seals are ideal to ensure compliance, making them a dependable choice for professionals managing fire door safety.

Why Choose Fire Door Intumescent Strips?

Using the correct intumescent seals for fire doors is essential for achieving full passive fire safety compliance with building regulations and legislation. Fire door seals are engineered for seamless installation and maximum protection regardless of door thickness, composition, height, or finish.  

For responsible persons looking to meet rigorous fire safety standards, these strips are indispensable for any fire-rated door setup. You can read more about passive fire protection in our essential guide, including compartmentation and property protection.

Precision in Fire Protection: Choosing the Right Intumescent Strips

Our intumescent strips range includes fire door strips that cater to different needs, whether for single or double-action doors. Available in popular dimensions such as 10mm, 15mm, and 20mm, intumescent strips suit various door configurations. 

When installing to double doors, the meeting stiles should not bind. The pair of doors should still be free and easy to use even when a door closer is fitted. If the door is a smoke control door fit a plain fire seal to the edge of one leaf and a cold smoke seal intumescent strip to the other. Otherwise, a fire-only seal can be fitted to both meeting stiles. 

Comprehensive Fire Door Smoke Seals

Smoke seals on fire doors can combine fire resistance with smoke resistance, delivering more than just fire protection. Door brush strip and blade seals provide fire and smoke protection in one seal. Intumescent smoke seal strips are supplied in standard lengths and finishes with bespoke options available with differing brush lengths, blade configurations, and carrier finishes. Contact our team today for more information.

Choose the right size for the fire rating and test evidence of your doors with 10mm and 15mm intumescent strip fitted to FD30 and FD30S doors, with 20mm wide seals more commonly found on FD60 and FD60S doors. 

Smoke seals are also available separate to a fire-only seal. Smoke and acoustic resistance can be delivered with a batwing-type corner seal, and to seal the gap at the bottom of a door, you can install a mortice, semi-mortice, or surface mounted drop seal. 

Reliable Fire and Smoke Seals Tested for Compliance

From plain intumescent strips to combined fire and smoke seal solutions, each product undergoes rigorous testing to meet UK fire safety regulations. These strips are ideal for creating an effect barrier against both fire and smoke, providing you with compliant, dependable protection when it’s needed most.

Due to different core materials with differing expansion rates, different triggering temperatures, and types of reaction, always replace all intumescent strips and smoke seals on a door with the same strip, even if only part of one strip is damaged. 

You can read more about fire door safety with our 8 step guide, including how to test the gaps around a fire door using a fire door gap tester. You can also order your free fire door gap tester today to have on hand as part of your regular door maintenance routine.

Discover the Right Fire Door Intumescent Strips for Your Project

Equip your fire rated doors with the right fire door ironmongery to ensure comprehensive passive fire protection. Browse our full range and find the ideal solution to seal the gaps, prevent smoke ingress, and secure your fire doors with ease. Explore our range of intumescent strips and acoustic seals for single or double doors and make your choice for trusted, compliant fire safety.