Fire-protection systems for cables and cable penetrations

HENSOMASTIK® and HENSOTHERM® fire-protection systems for cables and cable penetrations are used as an alternative or addition to cable installation ducts and inhibit or retard the spread of flames and smoke gas release in the event of fire. They are used both indoors and outdoors and wherever unfavourable external conditions prevail.

Coatings

In the event of a fire, a HENSOMASTIK® fire protection coating can reduce the destructive effects of heat by ablation (splitting off water in a chemical reaction), thus delaying ignition and preventing the spread of fire along the cables. In addition, a cable coating can protect against UV radiation and extreme environmental conditions and extend the service life.

Bandages

HENSOMASTIK® and HENSOTHERM® fire protection bandages for cables and cable support systems (cable trays) can inhibit or completely prevent the development of cable fires and the burning of cable sheaths and insulation. Likewise, burning dripping is prevented and the release of smoke gas is reduced by encapsulating the toxic fire gases.

Fire penetration seals

HENSOMASTIK® and HENSOTHERM® fire penetration seals can seal apertures for cable and cable support structures in walls or floors so that the fire resistance classification of the penetrated construction element is restored. For use in the European economic area, all construction variants with a specific product system are standardised in a European Technical Assessment (ETA) stating the essential performance characteristics of non-standard construction products.

Effective Support Measure (WUM) for cable systems with a requirement for functional retention

An effective support measure (WUM) is a standard-compliant structural and technical solution that ensures cable systems—particularly in safety-critical areas such as emergency lighting, alarm, and communication systems—remain operational even in the event of a fire. In this approach, cables are protected by specialised support measures so that their load-bearing capacity and functional retention are maintained in accordance with the requirements of DIN 4102-12. The legal basis is derived from the relevant state building regulations and supplementary guidelines such as the Muster-Leitungsanlagen-Richtlinie (MLAR), which stipulate that safety-relevant systems must remain operational for a defined period during a fire.