Cricklewood Glass - Quality Products & Services Since 1986

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Commercial Noise Reduction for Windows - Commercial Noise Pollution in London



Secondary glazing for commercial noise reduction

City Offices 77 dB on the 2nd Floor 35 to 45 dB Recommended Secondary Glazing London

Typical Noise Levels

In order to specify effective secondary glazing for commercial noise reduction, we need to know:

  • approximately what the current noise levels and types of noise are


  • the use, or proposed use, of the building and the different areas within

We can then determine the required noise reduction and specify accordingly.

The following chart should give you a good guide to the current noise levels.

Typical Noise Levels Chart - Commercial Noise Pollution in London

100 dB Noise Pollution - Beside a Railway Station, Secondary Glazing London
97 dB Jet Aircraft at 6000 ft Over Flight Path Preparing for Landing Secondary Glazing London
Third Floor City Centre Office, about 87 dB, Secondary Glazing London
 0 dB The threshold of hearing
10 dB Normal breathing  
20 dB Rustling leaves  
30 dB Quiet office or library  
40 dB Light rainfall  
55 dB Average office noise  
60 dB Normal conversation  
60 dB Vacuum cleaner  
70 dB Busy street - street level Above 70 dB is considered hazardous & can result in hearing damage
75 dB Main road traffic at 30 mph  
77 dB 2nd floor office in town centre  
80 dB Local construction activity  
80 dB Average factory  
80 dB Diesel train at 100 ft.  
86 dB 3/4’s of a mile from a major airport  
87 dB 3rd floor office next to major arterial road  
90 dB Heavy goods vehicle passing Prolonged exposure at 90 dB can permanently damage the auditory nerves
97 dB Jet aircraft at 6000 ft. preparing for landing  
100 dB Beside a mainline railway  
110 dB Car horn  
110 dB Live rock music  
120 dB Aeroplane on the runway  
120 dB Emergency services siren 120 dB can cause pain & ringing in the ears
130 dB Pneumatic drill  
140 dB Fireworks At 140 dB sharp pain & extensive destruction of the auditory nerves
155 dB Rifle shot  
160 dB Turbojet engine Immediate persistent ringing in the ears & massive destruction of the auditory nerves occurs at 160 dB
Hotel Bedrooms a Level of 30 dB is Recommended Secondary Glazing London

In 1980 the World Health Organisation issued recommendations for noise levels - "Environmental Health Criteria 12: Noise" - subsequently updated in 1999, which also stated:

“.... a level of less than 35 dB is recommended to preserve the restorative process of sleep.”

In the UK, the recommended levels of internal noise for all types of premises are contained in British Standard 8233: 1999: 'Sound Insulation and Noise Reduction for Buildings - Code of Practice'

The chart below summarises the recommendations - which in each situation gives a recommended level - “Good” - and an upper limit - “Reasonable.”

Golders Green Parish Hall Glazed with 6.4mm Low E Laminate Noise and Heat Secondary Glazing London Colour Matched Horizontally Sliding Commercial Secondary Glazing for Heat and Noise Insulation, Secondary Glazing London
Recording Studio 20 dB 25 dB
Residential Bedrooms 30 dB 35 dB
Hotel Bedrooms 30 dB 35 dB
Church 30 dB 35 dB
Lecture Theatre 30 dB 35 dB
Hospital Ward 30 Bd 35 dB
Residential Living Areas 30 dB 40 dB
Classrooms 30 dB 40 dB
Libraries & Museums 30 dB 40 dB
Office Meeting Rooms 35 dB 40 dB
School Staff Room 35 dB 45 dB
Cellular Offices 40 dB 50 dB
Open Plan Offices 45 dB 50 dB
Workplace Corridors/Washrooms 45 dB 55 dB
Workplace Canteens/Kitchens 50 dB 55 dB

Further information:

pdf Download our Secondary Glazing Brochure

Thank you for visiting - please Contact Us if we can be of any further help.