Fire stopping

In relation to fire protection, the concept of “fire zone” plays an important role, which is related to the safety of the facility. A fire zone is a definite unit defined from a fire protection point of view, which is separated from adjacent units by fire-stopping structures with defined fire resistance limits. For the operation of the facility, it becomes necessary to create penetrations on these fire-resistant structures, and it is extremely important to properly seal these penetrations with a fire-resistant seal in order to ensure that the safety level does not decrease. To solve this, fire-stopping intumescent or heat-absorbing (ablative) systems are typically installed as a sealing solution.

• Intumescent system
• Heat-absorbing (ablative) system
• Fire protection of air ducts and cable trays
• Fire protection gap sealing

Intumescent system

Materials that form a foam-carbon layer under the influence of high temperature are the elements of the intumescent system. The foam layer works as an insulation and a filling in the gaps, around cables or cabletrays or pipes, and with that behavior, it prevents the further spread of the fire to the other fire zone.

Coatings, putties:

Wraps, collars, Bandages:

Prepainted mineralwool board:

Heat-absorbing (ablative) system

Basis of the ablative, the heat-absorbing system is a one-component putty comprising a special acrylate copolimer which diluting with water can be applied as coating.

Putties, coatings:

Wraps, collars, bandages:

Prepainted mineralwool board:

Fire protection of air ducts and cable trays

TThe ventilation ducts made of steel sheets do not meet the fire protection requirements by themselves, because they easily heat up and deform in the event of a fire, and therefore the protection of the fire zones cannot be ensured either. However, these ducts can be protected with a certified fire protection covering, but the ventilation duct can also be formed as an independent air duct from fire protection construction boards that are also certified.

Cable trays can be covered with certified fire protection boards if the requirement is to protect the penetrating cables against fire.

Fire protection gap sealing

Building structures are very often separated from each other by gaps, which in some cases are on the border of the fire zones. On the fire zone boundaries the gaps can be typically fix or moving. The basic configurations generally are slab-slab (horizontal gap), wall-wall (vertical gap), and wall-slab (vertical or horizontal gap).

Architectural gap sealing:

Moving gap sealing: