Build Your Own Measured Noise Profile
Tell us where your property is, what it is built like and what keeps you awake. We combine that with the façade readings recorded during our London surveys to show your likely outdoor levels, the internal level commonly measured after installation, and the specification that usually suits.
Noise profile builder
Your property
Your noise profile: Barking & Dagenham
Dominant local source recorded in this borough: A13 traffic and freight rail.
Daytime at the window
70-76 dB
Night-time at the window
62-67 dB
Typical internal level after installation
31-36 dB
That is an indicative reduction of roughly 34-45 dB in the affected room. Reduction of up to 54dB is achievable in suitable configurations; actual performance depends on the existing window, glass specification, air-gap depth, installation quality, room construction and noise frequency.
Specification that usually suits this profile
- Glass: 10.8mm acoustic laminate
- Air gap: 150-200mm air gap
- Opening style: Heavy-duty sliding or hinged unit
Noise source: Steady low-to-mid frequency energy; thicker laminated glass and a deep air gap work best.
Property: Thin original glass and worn sash joints leak sound; deep reveals allow a generous air gap.
Floor level: Typical façade exposure with some screening from street level.
Existing windows: Existing single glazing typically gives around 25dB reduction on its own.
Survey note: Steady low-frequency road and freight noise favours thicker laminated glass.
Figures are typical façade readings taken during our surveys, adjusted for the details you entered. They vary by street, floor level, orientation and time of day, and are not a substitute for an on-site sound survey with a calibrated meter.
Noise Calculator: Estimate Your Internal Level
Work out the level you are likely to measure inside the room from your window size, glazing specification, wall construction and how well the window seals.
Internal noise level calculator
Estimate the level you are likely to measure inside the room. Set the level outside the window, then describe the window size, the glazing specification, the wall construction and how well the window seals.
Quiet side street 55dB, busy London road 70-78dB, main arterial or rail 80dB+.
Estimated internal level
49 dB
Estimated reduction
27 dB
Intrusive indoors; a higher specification is advisable
Window size: The most common London sash or casement size.
Glazing: Original 3-4mm glass with worn seals; around 25dB in good condition.
Wall construction: Heavy masonry performs well, so the window is the weak point.
Sealing: Small perimeter gaps let higher frequencies leak through.
Estimates are indicative and based on typical performance recorded during our London installations. Reduction of up to 54dB is achievable in suitable configurations; actual performance depends on the existing window, glass specification, air-gap depth, installation quality, room construction and noise frequency. Only an on-site survey with a calibrated meter can confirm figures for your property.
Noise profile FAQs
How accurate is the bespoke noise profile?
It is an indication based on typical façade readings recorded during our London surveys, adjusted for your property type, floor level, window condition and dominant noise source. Only an on-site sound survey with a calibrated meter can confirm the figures for your specific window.
What internal level should I aim for?
Most people sleep and concentrate comfortably once internal levels sit in the high 20s to low 30s in decibels. The estimate shows the internal range commonly measured after a suitable specification is fitted.
How much reduction is realistically possible?
Specialist acoustic systems can reduce external noise by up to 54dB in suitable configurations. Actual performance depends on the existing window, glass specification, air-gap depth, installation quality, room construction and noise frequency.
Does the noise source change the specification?
Yes. Heavy traffic and rail carry strong low-frequency energy that needs thicker laminated glass and a deeper air gap, while nightlife noise is mostly mid-frequency and responds well to a standard laminate with a generous gap.
Prefer the raw data? See measured noise levels for every London borough or browse local area guides.