man resting contentedly on bed with arms behind his head

Sound insulation

Healthy living spaces through sound insulation

Sound insulation has become a significant task in the building industry. Living and working in soundproof rooms leads to a significant improvement in the quality of life - concentration increases and sleep is more restful. This is also recognised by legislators and building owners. As a result, more and more regulations and requirements are being imposed, which may also affect the drainage   system of your project.

Best sound insulation with cast iron pipe systems

Due to its high wall weight and natural material properties, cast iron reduces noise in the air to minimum values and transmits hardly any structure-borne noise thanks to coordinated accessories. Wastewater noises are simply less audible, which significantly increases living comfort.

  • Ideal sound insulation properties
  • Effective sound attenuation with excellent values*
  • Problem-free compliance with standards & guidelines
  • Significantly less assembly work compared to plastic systems

Cast-iron systems have long been the first choice for public buildings - many specialist planners opt for the cast-iron variant for sound and fire protection reasons. With coordinated connection and fastening technology, the sound level can even be reduced to below 20 decibels dB(A).

All cast iron systems

*This is proven by comparative measurements between different manufacturers carried out by the renowned Fraunhofer Institute for Building Physics in Stuttgart. You can get the test results directly from the manufacturers.

Man with construction helmet makes „shhhh“

The significance of wastewater systems

Comprehensive sound reduction does not only mean the insulation of windows, walls and ceilings, but also concerns supply and drainage pipes. On the one hand, flowing water in the sewage pipe causes airborne sound as audible noise. On the other hand, vibrations cause structure-borne noise, which is transmitted to the wall via pipe clamps and brackets and can cause noise pollution.

Icon Airborne sound
Airborne sound
Icon Structure-borne sound
Structure-borne sound
Icon Standards and guidelines

Standards and guidelines on sound insulation

The building regulations in Germany require a soundproofing certificate in accordance with DIN 4109. According to this, all noise-causing factors must be considered together, i.e. all the noise coming from drinking water and wastewater installations together. Sound insulation is a service owed under a contract for work and services.

Rooms requiring protection

One part of DIN 4109 describes the conditions for so-called rooms in need of protection. According to this, a room in need of protection is a room that must be protected against noise. This includes, among others:

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Living rooms
Icon Bedrooms
Bedrooms
Icon Office space
Office spaces
Icon Classrooms
Classrooms
Icon Dormitories
Dormitories
Sound insulation begins with floor plan planning

Once the building is completed, sound emission values cannot be corrected downwards so easily.

Careful attention should therefore be paid to possible building acoustics consequences as early as during the floor plan planning stage when the individual rooms are arranged.

  1. The basic principle for planning is the separation of noisy rooms such as kitchens or bathrooms and rooms requiring protection such as bedrooms.
  2. A subsequent correction, for example through additional structural sound insulation measures, is associated with high costs.
Hand with pencil draws building plan

Tested sound insulation solutions for drainage systems

These manufacturers of cast iron drainage pipe systems produce tested drainage technology with maximum sound insulation.

Overview of all systems