DIN 4109-32:2026-09 - Draft

What is DIN 4109-32 about?

DIN 4109 is the central series of standards for sound insulation in buildings. Depending on the part, it covers requirements, calculation-based verification methods or technical principles for acoustic planning and assessment of buildings.

DIN 4109-32 contains a component catalogue for solid construction and provides acoustic data that can be used for calculation-based verification in accordance with DIN 4109-2. It enables the acoustic assessment of components and constructions without additional building acoustics tests and provides planning and design principles for structural sound insulation.

What content does the standard cover?

DIN 4109-32 includes acoustic characteristic values, calculation approaches and construction data for solid building components and their connections. It supports the determination of airborne and impact sound insulation as well as the assessment of flanking sound transmission.

Topics covered at a glance:

• Solid single-leaf and multi-leaf walls
• Party walls, external walls and facing shells
• Solid roofs and floors
• Balconies, access balconies and stairs in solid construction
• Airborne and impact sound insulation of building components
• Junctions, flanking transmission and decoupling
• Acoustic characteristic values for masonry, concrete, aerated concrete and other mineral building materials
• Data for calculation-based verification in accordance with DIN 4109-2

Why is the standard relevant in practice?

DIN 4109-32 provides planners, building physicists and sound insulation experts with the necessary component data for sound insulation verification in solid construction. This allows airborne and impact sound insulation to be assessed by calculation as early as the planning phase and suitable constructions to be selected in a targeted manner.

The characteristic values for walls, floors, stairs, party walls and component connections are particularly relevant. The standard therefore forms an important basis for preparing standard-compliant verification of structural sound insulation in accordance with DIN 4109.

What changes have been made compared with the previous edition?

Compared with DIN 4109-32:2016-07, the draft has been expanded and updated. The most important changes include:

• Addition and review of spectrum adaptation terms
• Inclusion of additional provisions for balconies, access balconies and stairs
• Expansion of specifications for party walls with two solid leaves
• Addition of data for external walls with facing shells
• Inclusion of junctions between lightweight components and perforated brick masonry
• Editorial revision of the document

Target group

• Architects
• Civil engineers
• Specialist planners for building physics
• Sound insulation experts
• Inspection engineers
• Housing companies
• Planning and engineering offices in building construction

Supplementary standards in the DIN 4109 series

For comprehensive planning of structural sound insulation, further parts of the DIN 4109 series may be relevant depending on the specific application. These include requirements for sound insulation, calculation-based verification methods and component catalogues for timber, lightweight and drywall construction or building services installations.