Fitherm - GB

Product Description

Fitherm® GB is a high-performance intumescent material based on expandable graphite. In case of fire Fitherm® GB can expand to multiple times its original volume and forms a heat-isolating shield. Fitherm® GB expands in all directions to fill gaps and cavities and builds a very effective barrier against fire and smoke. The water-resistant property enables it for use in areas with high humidity. Fitherm® GB is a good choice for an intumescent material with proper performance at a very attractive price.

Fitherm® GB strips can be laminated with a PVC foil in different colors, with a fiber glass layer or other materials, on the other side optional with a high quality self-adhesive for easy installation and durable fixing.

Technical Data
Density approx. 1.25 g/cm3 to 1.3 g/cm3
Expansion temperature starting from 200°C
Expansion factor up to 15-fold its original thickness
Expansion pressure start approx. 0.5 N/mm²
Colour black

Fitherm GB is developed for a wide range of applications where an intumescent material is necessary to maintain the system integrity and insulation in case of fire. These systems are for example;

  • fire doors and shutters
  • partition walls
  • glazing elements, ceilings and floors
  • fire safes and document cabinets
  • air grilles and dampers
  • pipe penetrations and cable transit systems

Fitherm GB can be stored under normal room conditions without special care. During handling and processing the wearing of protective gloves is recommended.


Fitherm GB is available as flexible rolls in the following standard dimensions, other measures on request:

Thickness: minimal 0.55mm, 1mm, 1.5mm or 2mm;
Width: 10mm, 15mm and 20mm;
Length: 25 meter with or without self-adhesive backing

Lamination with PVC foil in different colors or fiber glass cloth is possible. Encapsulation into uPVC in different colors is available in a width of 10, 15, 20, 25, 30, 40 and 60mm.

Some of our other fire proof products

fitherm putty graphite based product
Fitherm NP
e-pad fireproof electricity products
intumescent putty
Fimotion, fireproof products supplier

Correspondence address

Wahner Straße 75
51143 Köln