Fitherm - GS

Product Description

Fitherm® GS is a newly developed graphite based intumescent product. In case of fire Fitherm GS expands to multiple times its original volume and forms a heat-isolating shield. Particularly, Fitherm GS achieves the highest char stability compared to other intumescent products. Fitherm GS starts expanding at a relatively low temperature of around 150°C.

Fitherm GS fills gaps and cavities and builds up a very effective barrier against fire and smoke. A combination of precise dimension and excellent intumescent properties makes this product suitable for the most challenging tasks for intumescent materials. Fitherm GS is a halogen free product. Fitherm GS 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 150°C
Expansion factor up to 30-fold its original thickness
Expansion pressure start approx. 0.7 N/mm² to 1.3 N/mm2
Colour black

Fitherm GS 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
  • letter box systems 
  • pipe penetrations and cable transit systems
Fitherm GS can be stored under normal room conditions. During handling and processing the wearing of protective gloves is recommended.

Fitherm GS 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 glass fiber cloth is possible. Encapsulation into uPVC in different colors is optional 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