Black Knight Secondary Glazing
Black Knight Secondary Glazing

Noise Reduction

According to the World Health Organisation (WHO) the effects of noise are increasingly affecting our health with increased risk from heart disease, the effects of stress and loss of sleep all contributing to a worsening living environment for many of us.


Noise reduction measures can prevent  much of the excessive outside noise pollution entering our homes through the existing windows and adoors which in many cases are not well enough sealed to prevent it. 


Fitting secondary glazing to deal with acoustic issues is the most effective way of greatly controlling noise.



We are all becoming much more aware of how intrusive noise affects us in daily life.


From difficulty in concentration to loss of sleep these have a very detrimental effect on our day-to-day wellbeing.


With the correct use of specialist glass the installation of secondary glazing will deal successfully with both high and low frequency noise.


Windows are designed to let in light and ventilation but this also allows external noise in as well. 

Recommended noise reduction solutions

How much noise reduction that can be achieved using secondary acoustic glazing will vary depending on the volume and type of noise being experienced.


It is vital that the quality of design and in particular the expertise of installation is considered in the overall solution.


With decades of experience in the design and installation of sound reduction systems we will know exactly how to achieve the optimum reduction given your particular situation.




Train noise, traffic noise, general street noise and aircaft noise all have different levels of intensity, frequency and wavelength.


The design of secondary glazing needs to be specified correctly to ensure that the maximum level of reduction is achieved.


Secondary windows will give a significantly better level of noise insulation than replacement windows because the gap between the respective glass panes is greater.


By ensuring the correct use of specialist acoustic glass the installation of secondary glazing will deal successfully with both high and low frequency noise and avoid resonance issues caused when glass thickness is not varied between primary and secondary glazing.


On a frequent basis we are often asked to fit secondary glazing over newly installed primary replacement double glazing as the actual achieved noise reduction did not come up to the expectations that had been incorrectly promised.

Secondary glazing for noise reduction

  • more effective than replacement glazing
  • no more draughts
  • smaller heating bills
  • cheaper than replacing existing windows


  • maintains the original external appearance of your property
  • improved security
  • no need for Planning Permission in conservation areas
  • quick & clean fitting