Intumescent Fire Door Seal Strips and Sheet

Fire doors are one of the most important components in ensuring safe exit, isolation of the fire and saving lives. However a fire door assembly must be made of fire rated components must be used as per tested designs. Intumescent strips are the most important fire rated component in a fire doors. It helps stopping smoke and fire from spreading from the gaps in the edges of door shutter & frame joints, locks, handles, etc.


Intumescent strip works by sealing around the edges of a fire door in the event of a fire. The edges of a door are one of the most vulnerable when fire strikes, so intumescent strip is extremely important. Two main types are available - Fire Only or Fire & Smoke. Fire & Smoke seal has a brush pile or rubber fins, and these also provide protection against smoke by creating a physical barrier between the fire door and the frame.


At Wedge, we specialise in supplying a comprehensive range of intumescent strips which are designed to make it quick and easy to increase the level of fire safety at your premises.


  • 30 years of Guarantee
  • Zero Halogens Intumescent Material
  • From 20:1 to 60:1 Extreme Expansion



  • Fire Doors Intumescent Strips Fire Rated Access Panel
  • Fire rated Composite Panels Intumescent Electrical Switch-box Fire Rated Air Transfer Grills
  • Fire Wrap for Pipe & Fire Collars Duct Fire Wrap


1. Rigid Intumescent Seal Strips

26:1 Free Expansion | Uni-directional expansion | Stable char structure

A rigid intumescent material with excellent pressure generation and expansion performance. It is suited to a wide range of applications including as a fire seal for door and glazing applications, ironmongery protection, cladding and rain-screen cavity fire barriers, construction joints and general gap sealing.


Made of halogen free graphite based intumescent material which produces a particularly stable and resilient insulating char structure during and after expansion.

Pressure generation expansion at 400°C is 16 Bar


Thickness (mm): 1.7 - 6.6
Types: Basic, Self-Adhesive, PVC Coated : B1, slowly combustible
Reaction to fire


2. Flexible Intumescent Seal Strips

20:1 Free Expansion | Highly flexible | Excellent char structure

It is a dark grey intumescent sheet which generates high expansion and pressure generation when exposed to fire or heat. It is suitable for applications such as door and glazing seals, door hardware and ironmongery protection, damper seals, gap sealing or a variety of
gasket applications.


It is highly flexible allowing it to be wrapped or folded to suit various applications but produces an excellent char structure helping to maintain integrity throughout the fire.

Pressure generation expansion at 400°C is 11 Bar.

Intumescent Fire Door Seal Strips & Sheet

    +91 (0)124 4089664


    +91 97175 06848‬


    Wedge India

    14th Floor, 03-120, SVO, Behind Global Business Park

    Near Guru Dronacharya Metro, MG Road,

    DLF Phase1, Gurgaon - 122002

    Tel: +91 124 408 9664

    Building Materials & Agri Products

    Level 4 Augusta Point, DLF Phase 5,

    Gurgaon,Haryana - 122002 India

    Insulation Customer Service

    806A - Galleria Tower, Galleria Market

    DLF Phase 4, Gurgaon - 122009

    EPC / Projects Services

    B-3/17 LGF, Safdarjung Enclave

    New Delhi - 110029

    Mumbai: 504, Kbond, Twin Complex-I, 

    Fire Bridgade Road, Marol, Andheri, 

    Mumbai - 400059, India

    Wedge UK


    71-75 Shelton Street, Covent Garden

    London - WC2H 9JQ, England, UK

    Tel: +44 20 3575 1161

    Wedge China

    No 40 Shangsi Road, Shangjie District, Zhengzhou City,

    Henan Province, 450041, China

    Tel: +852 8191 1772

    Czech Republic

    EPC Furnaces

    Realistic: Závodu míru 4, 

    360 17 Karlovy Vary, 

    Czech Republic

    Industrial Furnaces

    Engineering | Design | Manufacturing

    Supporting "Make in India" with more economic and energy efficient Furnace manufacturing technology.

    North Africa

    Annaba: Cite Des 72 Logements,

    Colline Rose Bâtiment 01, Annaba - 23000, Algeria

    Algiers: Villa 17, Coop El Moustakbel BeauLieu,

    Oued Smar - Alger, Algeria

    Global Partners / Distributor 

     Developed and Managed by ZJELL.COM  

    India Locations: Delhi | Mumbai | Gurugram | Lucknow | Ahmedabad | Bangalore | Chennai | Kolkata 

    Global Locations: Singapore | Manchester | Dubai | Beijing | Bangkok |  Kuala Lumpur | Hong Kong | Dhaka | Nairobi | Port Louis | Durban 

    ©2011 by Wedge India