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on April 23, 2026

Fire-retardant impregnated felt: safe design without compromises

i-felt could already be fire-retardant impregnated with a salt solution (in accordance with ISO 6941 – small flame test). New is that we now also offer a permanent form of fire retardation for projects with higher fire safety requirements.

This makes it possible to combine sustainable material choices with strong fire safety performance, without compromising on appearance.

Two forms of fire-retardant impregnation

Depending on the project requirements, we offer two options:

Impregnation with salt solution (basic)

The existing treatment conforms to ISO 6941 (small flame test), which tests how quickly a material ignites when exposed to a small flame. This treatment has a temporary effect (approximately 5 years) and is suitable for many applications.

Surcharge: €10/m²

Impregnation with Bemiflame NWM (permanent)

For projects from 200 linear meters, i-felt can be impregnated with Bemiflame NWM: a water-based, REACH-registered phosphorus-nitrogen compound. This treatment provides a permanent fire-retardant effect without noticeable impact on the appearance of the felt. 

Indicative tests show that fire class B (EN 13501-1) can be achieved with this.* It is possible to have project-specific tests carried out by an independent party, and we are happy to cooperate with this.

Surcharge: €10/m²

* The final classification always depends on the application, construction, and attachment.

Flexibility in purchasing

For smaller projects (<200 linear meters), we offer a solution through combination orders. By bundling orders, smaller quantities of felt can also be impregnated. This is possible from 1 roll per color (35 m x 1.8 m = 63m2).

Application

Fire-retardant impregnated felt is suitable for, among other things:

  • Office environments
  • Educational institutions
  • Public spaces

Also applicable in acoustic interiors

Fire-retardant impregnated felt can also be used in acoustic solutions, such as desk dividers and panels. This allows you to combine sound absorption with fire safety, without compromising on appearance.

Preservation of quality

The fire-retardant treatment has no noticeable effect on the characteristic properties of the material. The warm appearance, flexibility, and tactility of the felt are preserved.

Important considerations

Curious what fire-retardant i-felt can mean for your project?

Contact us or visit us in The Hague to discuss the possibilities.


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