Build a sound barrier for the outside yourself


In order to effectively reduce noise coming from the outside, a soundproofing wall can influence the propagation of the sound waves and trigger reflection. Depending on the available space and noise sources, properly dimensioned and placed protective walls can provide effective reassurance in a decorative design.

Visualization of sound waves

To get an idea of ​​how sound waves propagate, it helps to visualize them in a colored state. In this visualization, it is striking that the lilac-colored waves, for example, spread out in a funnel shape. The farther the noise source is removed, the smoother the environment of sound waves is "filled".

At greater distances to the source of noise, a kind of "sound carpet" sets over the environment. Individual soundproof walls can hardly influence these sound-saturated "air". Perceptible effects can almost only be achieved in a kind of "encapsulation". Typical examples of encapsulation are fully glazed balconies and conservatories.

Positioning of the soundproof wall

When planning for the self-construction of a sound insulation wall, the following factors must be considered:

  • Removal of the noise source
  • Definition of the area to be shielded (height)
  • Reflective properties of the surface
  • Combination of absorbing and reflecting materials (earth, stone, glass, metal)
  • Tightness of the wall construction

Structure of the soundproof wall

The greatest effect is achieved by combinations of materials that deflect and swallow sound. In the garden, gabions can be ideally used with sufficient space. In addition to stones, earth, sand and absorbent mats can be inserted into the lattice cavities. Slopes and plantations additionally interrupt sound waves.

For smooth rigid acoustic walls, a dense material should be chosen. In addition, glass, wood and concrete can be arranged in the form of staggered struts to reflect, divert and break the impacting sound waves. In some cases, a slight inclination of the wall helps. If the incident sound is diverted upward at an angle of five to ten percent, a higher noise component "loses" in the sky.

Tips & Tricks

In many cases, an effective sound barrier on your property needs a height that must be approved by the building authority. Since the local development plan and the distance to property boundaries can impose further conditions, you must also take into account the permitability when planning.

Product Image: nnattalli / Shutterstock


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