Installation | Blow-in insulation in fire protection

Fire protection without structural changes

The blow-in insulation increases fire protection without any structural changes. Blow-in insulation means that loose insulation material such as mineral wool flakes is blown into the cavities of the various building components by air pressure and, at the same time, compression is created by sucking off the air. This method has proven its worth particularly with existing cavities such as installation shafts, as the fire protection can be upgraded retrospectively without great effort.

Construction areas and additional benefits

Thanks to the complete mechanical filling of the shaft, the requirements of preventive fire protection are met to the highest degree. Because of the versatility of the blow-in insulation technology, the process can be used in several construction areas such as facades, roof slopes and installation shafts. Even if no fire protection is required, sound insulation can be achieved with blown-in insulation. Cellulose insulation can also be processed in the same way.

Material mineral wool

Mineral wool is particularly suitable for blow-in insulation as fire protection because it has a melting point of over 1,000 ° C and is therefore classified as non-flammable. Mineral wool consists of different types of rock such as basalt, diabase or dolomite with mineral aggregates. For the production, the rock is heated to over 1500 ° C, defibrated, binding and impregnating agents are added and the fibres are then bundled into a wool fleece.

The plus

Mineral wool is not only used for fire protection, but also has a good insulation value. In addition, the material is water-repellent and resistant to aging. It is even resistant to fungal attack, vermin, or rotting.

Stone wool will also be available in the long term - it is mined in open-cast mining and 100 m³ of rock wool is obtained from 1 m³ of raw material.

Installation shaft insulation

In the case of installation shafts, fire protection by means of blow-in insulation prevents a fire from spreading across floors. The method is particularly suitable for the renovation of old buildings or the renovation of existing buildings, since usually only small injection openings are required per floor.

Large-area opening is therefore not necessary. At the same time, this type of cavity insulation increases the sound level. The complete sheathing of the pipes in particular ensures an airborne sound insulation effect.

Procedure of blow-in insulation

We calculate the required amount of mineral wool in advance and prepare it for the blowing process. The injection openings are optimally positioned on site by our service technicians in order to make it easier to close the installation holes again later.

For the blow-in insulation, we use a blow-in machine that uses hoses to convey the insulation material into the masonry, the ceiling or the installation shaft. We also use appropriate accessories depending on the area.