Thermally insulated glazing with sound insulation

Noise can be kept outside. Combine sound and heat insulation for a more peaceful home.

Noise is a mix of different sound waves caused by vibrations. The peaks of the sound waves are referred to as sound pressure. Sound pressure is measured in decibels (dB) and varies substantially according to the noise source.

In order to achieve optimum sound insulation, the existing noise sources must be determined exactly, so that the frequency ranges located around the site can be insulated. In addition to proper sound insulating glazing, the frame construction and sealing systems are important for optimum sound isolation.


Hero-Phon S

Number of glass panes 2
U value 1.1 W/m²K *
Inert gas Yes
Coating Yes
Warm edge No

Sound insulation combined with superior thermal insulation.

* Typical U value of glazing unit. The actual U values are given in the corresponding statement of performance.

TIF* Hero-Phon S

Number of glass panes 2
U value 1.1 W/m²K *
Inert gas Yes
Coating Yes
Warm edge Yes

Sound insulation combined with superior thermal insulation through the use of thermoplastic spacers.

* Typical U value of glazing unit. The actual U values are given in the corresponding statement of performance.

Hero-Phon Top S

Number of glass panes 3
U value 0.7W/m²K
*Inert gas Yes
Coating Yes

Hero-Phon Top S combines triple insulating glazing with excellent U values and soundproofing.

* Typical U value of glazing unit. The actual U values are given in the corresponding statement of performance.

Influencing factors  on sound insulation in glazing

Weight
The heavier the glass per unit area, the greater the sound insulation

Glazing panel cavity spacing
The greater the spacing between the panes, the better the sound insulation values of the glazing

Laminated glass
In addition to the PVB films which are used for the production of laminated safety glass, there are special sound insulation films that extend the security aspects around the sound insulation.

Asymmetrical construction
The sound waves which reach the outer pane of the insulating glazing unit, cause it to vibrate, which is dampened by the cavity. This effect is therefore increased with the width of the cavity. However, this is only has limited application due to the deteriorating insulation properties. If a moderate broadening of the cavity is combined with an asymmetrical glass structure, good sound insulation values are achieved.


Sound insulation classes of windows and façades according to VDI guideline 2719 Table 2+3       
Sound insulation class "Evaluated sound attenuation Rw of an installed window measured on the building db" "Required sound attenuation Rw of a window" "Required sound attenuation Rw of a window with insulating glazing"
1 25-29 ≥ 27 ≥ 27
2 30-34 ≥ 32 ≥ 32
3 36-39 ≥ 37 ≥ 37
4 40-44 ≥ 42 ≥ 45
5 45-49 ≥ 47 "A type test is required here"
6 ≥ 50 ≥ 52 "So far only achieved with double casement windows"
Spectrum correction values C and Ctr

The spectrum correction values C and Ctr were introduced in order to correct noise protection measures to a sound spectrum of specific standard noise sources. This allows the sound reduction index to be calculated at an early stage in the planning phase. The sound reduction index can be corrected using the spectrum correction value.

The correction value C (spectrum 1) takes the following noise sources into consideration
  • Residential activities
  • Children playing
  • Medium and high speed rail transport 
  • Motorway traffic > 80 km/h
  • Jet planes at a small distance
  • Premises that primarily emit medium and high frequency noise.
The correction value Ctr (spectrum 2) takes the following noise sources into consideration
  • Urban road traffic
  • Low speed rail transport
  • Propeller aircraft
  • Jet planes at a large distance
  • Disco music
  • Premises that primarily emit deep and medium frequency noise.
Contact person

Order entry