Sound testing rates the amount of sound the soundproofing insulation installed in a building for reduction of sound. It checks the amount of sound transmitted and the amount reduced by the building’s partitions. Part E of Building Regulations requires sound insulation in buildings and mandates that all newly completed constructions and rehabilitated developments go through sound testing.

Building Control does not issue completion certificates to buildings that don’t have a sound insulation certificate. Contractors and developers have sometimes discovered this, to their detriment. The significance of a sound insulation certificate cannot be overrated. Therefore, we ensure that you get the certificate speedily. We pride ourselves on the facts that our sound insulation certificates are issued with speed and efficiency.

Our highly qualified site engineers can arrive on site when needed. They will provide verbal results after the test and a written report will be sent to you within 24 working hours.

Our Guarantee

  • Over 15 years experience
  • State of the art equiptment
  • Onsite Support
  • Next Day Report Turn Around
Call us today for a quote on 020 3372 4430
Or you can email us at info@af-acoustics.com

What Sound Testing Does

Developments must test all walls, floors and ceilings that separate buildings or neighbours in a dwelling, to conform to Approved Document E (ADE) of the Building Regulations. You may not have to test your building if you used Robust Details which were approved before their installation. Sound testing conducts impact and airborne sound test on structures. The tests include the separating floors, walls and areas between buildings within developments.

What is part of a Sound Insulation Test

While producing lots of noise, sound test needs a quiet site to be conducted efficiently. Due to this fact, the workers in the site should not be present at the time of the test. Undertaking sound tests on site varies according to the size and complexity of the building project and the site conditions. If the site is simple and of regular size, it typically takes about 90 minutes to complete the sound test.

After the test, the sound insulation test engineers will let you know the outcome of the test and supply simple feedback of important things noted during the test; e.g. problems that might occur in the future.

A full report and individual sound test certificates can be generated and sent out the next day. The sound testing regime is set out in the Approved Document E of the Building Regulations. It states that one set of tests is required for every 10 units in a group or sub-group. Sub-groups are defined in Section 1 of Approved Document E (ADE). Buildings are divided into three kinds for the test – houses, flats and rooms built for or converted to residential dwellings, like student accommodation, care homes and hotel rooms. How much testing that should be done on each group is listed below:

Why Should Your Dwelling Undergo Sound Testing

After the 2003, Approved Document E mandates that all new structures in UK must take a sound insulation test before completion. Results for impact sound should be 62dB L’nTw or less while those for airborne sound insulation should be 45dB DnTw+Ctr or more. These result limits were put in to create and maintain a uniform standard for sound resistance in different parts of a dwelling and between adjacent buildings. When sound resistance is high in party walls and floors, the environment is more comfortable, since sound affects every aspect of our lives – work environment, home environment and while relaxing. This is why sound testing is crucial.

Sound insulation and speech privacy are important because not having them results in an unfavourable environment for those living in the development. It would mean noise moving from one flat to another in a block of flats. If, for example, an occupant works at night and happens to hear loud music from a neighbour upstairs on a weekend night, it would be very discomforting. This is just one instance of the influence of sound insulation on our lives. Sound insulation is also effective in buildings that have flats with mixed uses. If the building passed the sound test, you can be sure that noise reduction will be effective.

Does Your Development Need a Sound Insulation Test?

If you’re doing one of the following, then you need a sound test:

  • Constructing a building that has two or more units
  • Constructing a nursing home or rooms that will be lived in, e.g. hotel room or hostel
  • Converting a single development to flats
  • Using designs where Robust Details are not included

Building Regulations Part E discusses sound testing in detail and has made it a requirement.

There are two ways in which to show compliance. You can either test to the regime set out in Approved Document E (ADE), or pay to use Robust Details. If you choose the latter, you must use Robust Details which are a approved design details for partitioning walls and floors. The Robust Details scheme means that testing is not necessary, but is strictly limited to the design given in the Robust Details approved list. Being able to adapt your design to suit your needs is more efficient and costs less in the long run. Conducting on-site pre-completion sound testing also enables the architects more scope with their design and can lead to improved sound insulation performance.

Cost of Sound Insulation Testing

We can send quotation that’s completely free of charge and is based on the kind of development you have. We have worked throughout the country on all sizes of project, and should a sound insulation report and certificates be required, we can provide the fastest turnaround times and most competitive prices available. If you get a better quote elsewhere, simply forward it to us and we will try and beat it!

When can I carry out the sound insulation tests?

A sound test is usually conducted just before the construction is completed, and when all the doors and windows have been fixed. However, we can test your building earlier to check for problems. During the test, you should provide the following:

  • Access to all rooms. The only exception is if a schedule was created before the test time.
  • 240V power supply
  • A noiseless site

How a Sound Test is Done

Sound insulation testing is not complicated. Our highly qualified engineers will be willing to explain it in detail on the site. Airborne tests are conducted on party walls while impact and airborne tests are conducted on party floors.

The test uses a dodecahedron speaker and pink or white noise generator for source sound. The sound source is placed in the largest room of the two. The sound in the source room and receiver room (sharing a separating wall with the source room) is measured with a sound level meter. The meter is also used to measure the background sound, to ensure that it’s 10dB lower than the source sound, as is the standard. More background sound leads to creating a higher source sound. For airborne sound tests, two individual speaker positions are used for each source room. Measurements are then made to determine the levels in the receiving room of the tested partition in question. This gives a basic level difference between source and receiver rooms.

This basic level difference is then ‘corrected’ to allow for the reverberation time (the time is taken, in seconds, for a noise source to decay by 60dB) and the existing levels of background noise monitored whilst in the receiving room. Impact sound tests are performed with a tapping machine positioned on the floor of the source room. Noise level in the room below is measured at various different frequencies. Calculations based on these measurements are undertaken and the results compared to the Building Regulations Part E requirements for the given type of the building. Without the mathematical formulae used in the calculations, this is a simple explanation, however, it helps explain the testing process.

Call us today for a quote on 020 3372 4430
Or you can email us at info@af-acoustics.com

Sound Test Equipment Used

The testing equipment used are UKAS calibrated. Our highly qualified engineers test based on present Building Regulations conditions. Airborne sound test is the measurement of sound moving through the air through a wall or floor. We use a loudspeaker and noise generator that produces white or pink noise on one side of the partition, and measure with a sound level meter on both sides to calculate the sound insulation performance of the partition. We use a tapping machine, which drops metal hammers onto the floor to create impact noise. We then measure the amount of sound that passes through the partition with a sound level meter in the room under the tapping machine. Sound insulation tests are conducted in liveable rooms like the sitting room, lounges, kitchen/living spaces and bedrooms. The outcome of the test is written in a report and sent to the customer. This report helps Building Control sign off your building.

Sound insulation testing is essential for these dwelling types:

Sound Insulation Testing checks for both airborne and impact noise travelling through new or existing buildings. This may affect party walls and floors between new and existing buildings, or between spaces within a new development.

A new building with not less than two rooms

This makes certain that the dwellings have adequate sound proofing.

Conversions of former single dwelling properties into flats

When the development is completed, ADE of Building Regulations should be checked, and sound insulation tested accordingly.

Design that don’t have Robust Details factored in

Robust Details Ltd began the Robust Details scheme in 2004. The scheme enables architects use design details for separating elements, which have been tested before to comply with Document E standards. Once the design does not strictly abide by the design from Robust Detail approved list, the structure will have to undergo a sound test to ensure it conforms to Building Regulations. The minimum requirements are dependent on the kind of dwelling. Permanent dwellings and rooms for residential use have different requirements.

Parts of the UK AF Acoustics Cover

AF Acoustics is an acoustics design services and consultancy company. Our clients can be found nationwide, especially in Finsbury. Our clientele base includes architects, planning and environmental consultancies, private individuals and government agencies. You can find our consultants all over the south east region of the country. That way we give you the most affordable quotation that will meet your budget needs.

Why you should choose AF Acoustics

Our sound insulation testing expertise at AF Acoustics have aided several home and business owners in Finsbury. We come highly recommended by our clients because of the guarantees when you work with us

Over 15 years’ experience

We are able to offer helpful functional solutions that will solve our customer’s needs. We also have a track record of providing superior acoustic services to our customers (home and business owners) in the UK in small and large projects, giving them astounding value for their money.

Great prices

To ensure all clients in Finsbury can afford superior quality sound insulation testing, we offer some of the most competitive rates you can both in and outside Finsbury. If in doubt, contact us now for a free no-obligation quote.

Prompt and productive consultancy

We will interpret your problems and necessities, present you with vigorous ideas and provide acoustic advice through our extensive experience. We will give you the right answers and expert guidance so that you can get effectual solutions to your problems.

Adjustable test dates

Your convenience is essential to us. This is the reason we provide you with adaptable choices that allow you to pick test dates that are most advantageous for you. If you want to schedule sound insulation testing in Finsbury, phone or email us immediately.

Get your test reports quickly

The sooner you get a report on the completed sound insulation test, the sooner you can take appropriate action. We strive to deliver next day reporting in all scenarios regardless of the complexity or size of the project. We make certain all relevant issues are covered and quality tips are supplied by detailing all the aspects of the test in the report.

AF Acoustics sound testing services

With AF Acoustics, you get a highly effective and expert acoustic advice which our customers all over UK have benefited from. Telephone or email us today for more data on how we can assist you with your acoustic requirements.

Airborne and impact ceilings/floor tests

These are taken on separating floors/ceilings between residences. Impact testing evaluates how much the sound flowing from one partition to another through party floors via impact is. Airborne and Impact tests are carried out on the separating floors between habitable rooms of flats.

Approved Document E test

Our sound insulation testing in accordance with Building Regulations Approved Document E, which sets out details pertaining to the resistance to the passage of sound. The minimum airborne sound insulation test result should be 45dB DnTw+Ctr while the maximum impact sound test result should be 62dB L’nTw for new structures. Converted properties get a slightly different requirement. Expected minimum airborne sound insulation test result is 43dB DnTw+Ctr while expected maximum impact sound test result is 64dB L’nTw.

Testing for sound insulation

We offer the highest amount of aptitude and high quality service, and are constantly ready to work with our clients to give the most ideal chance of accomplishing a pass certificate. To make sure a new residence meets with the standards of greater than 45dB DnTw+Ctr and less than 62dB L’nTw, an airborne wall test and an airborne and impact floor test will need to be conducted. We regularly offer consultations to builders and project managers at the beginning of the development, so that they can take the appropriate action and are confident when it’s time to take the sound insulation test. Contact us today for more information about our sound testing services or to book a no obligation quote, free of charge.

Call us today for a quote on 020 3372 4430
Or you can email us at info@af-acoustics.com

BB93 testing of acoustic design in schools

Building Bulletin 93 (BB93) explains the sound performance requirement for the acoustics of school buildings. It likewise states how a school can meet this requirement. If you’re developing a new school in Finsbury, we can test it to find out if it aligns with BB93.

Acoustic plan details

AF Acoustics give definite design services and consultancy services to all types of developments. We create bespoke solution and can provide information on the best available acoustic products. We will tailor our design solutions to your project.

It is critical to get right professional assistance ahead of schedule from a highly qualified acoustic specialist. AF Acoustics can assist you with identifying the right acoustic propertiesfor your project at very early on in the construction process and tell you the best way to get them, utilizing a deep know-how of acoustic design.

We are able to assist with:

Acoustic detail layout for architect developing structures complying to Building regulations, BS8233 and so on. Detail designs for the health, educational and commercial projects in order to meet up with the necessary requirements. Specification and design of building services for noise control in residential and other noise sensitive scenarios Increasing sound through public enterprise and sound reinforcement systems in conference rooms, halls, lecture theatres and the like.

Contact our professionals for a sound test quotation

As an independent acoustics consultancy, AF Acoustics is able to provide extensive acoustic survey and design, investigations in the field of planning and noise, architectural and building acoustics, and air permeability testing. Whether you are a company or a private individual, we are here to advise and guide you. If you would like a friendly and accurate sound insulation testing quote, please send an email to info@af-acoustics.com or give us a call.

020 3372 4430 Contact us

We would like to know the following

When contacting us, please give us the following information

Location of development

Where is your development situated in Finsbury

Number of dwellings in the building

Total number of dwellings in the structure

Number of Storeys

Let us know the number of floors in your development so that we can give you an accurate quotation.

Number of dwelling units per storey

How many units are on each floor? Knowing this will help us give you an appropriate quotation.

Building type

The type of building, as different building types typically require a different testing.

New dwelling or converted property

Newly completed constructions and refurbished structures have different requirements for sound insulation testing. This is why it’s important to provide this information beforehand. Our quotation is available at any time.

Sounds test in accordance with building regulations

Our sound insulation tests are conducted in accordance with Part E Building Regulations in England and Wales and Section 5 of the Scottish Building requirements. You can also get credits for Code for Sustainable Homes and EcoHomes environmental assessment projects.

Part E of building regulations resistance to the passage of sound (England and Wales)

We have fully accredited engineers who can visit your property to issue appropriate certification that complies with the building control.

Standard division for structures (Scotland)

Section 5.1 of the Scottish Building Standards stipulates that “Every building must be designed and constructed in such a way that each wall and floor separating one dwelling from another, or one dwelling from another part of the building, or one dwelling from a building other than a dwelling, will limit the transmission of noise to the dwelling to a level that will not threaten the health of the occupants or inconvenience them in the course of normal domestic activities.” Fully detached roofs or walkways that are not used for residential purposes do not have to take the sound tests of the Scottish Standards 5.1.

How to pass a sound test

All you have to do to pass your sound test is include adequate sound insulation in the design. That way, you save time and cost for repair work and re-test. Are you uncertain that the separating floor and walls you will build will adhere to Document E 2003 conditions? You can book our design services. Whether you want some initial tests on your project, or comprehensive reports at the end, we can help you at the level that you need. The are required in order to have good conditions to undertake the sound insulation tests: Install and make sure that all external and internal doors and windows are operational Skirting boards are fitted Light switches, light fittingsand plug sockets are properly fitted We work with several professionals in construction from the beginning of the design stage to the completion of the development to make certain it conforms to Document E 2003 of Building Regulations.

Test report certificates

We try to issue a certificate to give you the details of the test evaluation and report, by the next day. After the test, our site engineers will provide verbal results and advise you on how to solve potential problem or future areas of concern. 6. Even before you get the certificate, you get the verbal results of the test. First, our completely skilled and competent sound insulation test engineers give you a verbal result at the site. They also offer advice on potential problems. Then the test report certificate is sent to you within 24 working hours, when feasible.

What do the results look like?

You will get your sound insulation test certificate whether you pass or fail the sound tests. If parts or all the building fails the test, repair work and a retest is recommended. We provide design advice to ensure your property does proper remedial and meets up with the necessary requirements.


Sound Insulation FAQ’s

The minimum requirements depend on a variety of factors such as if the development is a new build or refurbished, whether the development is intended to be a permanent dwelling, or classified as “rooms of residential purposes” (e.g. hotels, student accommodation, etc).

New builds must achieve impact sound test results of no more than 62dB L’nTw and airborne sound insulation of no less than 45dB DnTw+Ctr. Converted properties must achieve impact results of 64dB L’nTw or lower and airborne sound insulation of no less than 43dB DnTw+Ctr.

Flanking sound (or flanking noise) is sound that transmits between spaces indirectly, going over or around, rather than directly through the main separating element. This can allow sound to transmit between spaces even though the main separating element itself provides good acoustic insulation. Engaging our services at an early stage allows us to check designs and add necessary measures to prevent this occurring after construction. In the worst cases, flanking can exceed the direct transmission and lead to a failed test, despite highly specified partitions.

In the case of impact sound, the building construction is caused to vibrate as a result of a physical impact, such as footsteps on floors or stairs. The resulting vibration is radiated into other rooms in the building.

We can provide preliminary results on the day of test. We strive to deliver next day reporting in all scenarios regardless the complexity or size of the project. The delivered report will be comprehensive and detailed, to ensure all relevant issues are covered. The best recommendations can also be sent in a separate report or email.

We can normally conduct up to a maximum of three sets of tests per day. One set is two airborne floor tests, two airborne wall tests and two impact floor sound tests.

When it comes to the acoustic tests, a full set of tests should take approximately 90 minutes.

The requirements of sound insulation testing are fully detailed in the Building Regulations Approved Document, available here [link], under Part E (2003).

This requires all residential buildings to be tested when they involve walls and/or floors. These are known as party elements.

Assuming no tests are failed, building control bodies should stipulate at least one set of tests for every ten dwelling-houses, flats or rooms for residential purposes in a group or sub-group.

New builds must achieve impact sound test results of no more than 62dB L’nTw and airborne sound insulation of no less than 45dB DnTw+Ctr. Converted properties must achieve impact results of 64dB L’nTw or lower and airborne sound insulation of no less than 43dB DnTw+Ctr.

We recommend that if possible, we are contacted before a build to provide a design review and advice on how to meet quality standards.

Should the test fail, we can offer advice on how to improve the sound insulation. We have consulted on hundreds of building projects in the past, and have ensured all of them have met the building regulations. If a sound insulation test fails, we can give remindial advice to ensure the tests passes later.

We understand that most clients would prefer testing to take place as soon as possible. Once you get in touch we will schedule the test at the earliest available opportunity.

You can call us today to set up an appointment for sound insulation testing. Our scheduling is flexible so that you can get the service you need at your convenience.

Ideally, a test should be carried out as early as possible as problems are more difficult to fix the further along you are. Where possible, it’s recommended that testing is carried out before kitchens or bathrooms are installed. The minimum that we require to be able to carry out a test is:

  • All doors, windows and seals should be fully fitted and closable
  • All electrical fittings should be fitted and working
  • 240V mains power must be available on-site in all rooms
  • Gaps in walls and floors should be fully sealed
  • All walls and ceilings should be plastered
  • There should be no holes remaining in floors or ceilings
  • Testers will require access to all rooms on all levels

Pre-completion sound testing is a building regulation requirement for all purpose built & “formed by material change of use” (i.e. refurbished) properties since 2003. Sound testing is undertaken in a percentage of properties in each development to ensure that the separating walls & floors between habitable rooms of neighbouring properties meet the minimum requirements as defined by Approved Document E, commonly referred to as ADE.

From 2003, Approved Document E states that all new UK builds must undergo pre-completion sound insulation testing. New builds must achieve impact sound test results of no more than 62dB L’nTw and airborne sound loss of no less than 45dB DnTw+Ctr. Converted properties must achieve impact results of 64dB L’nTw or lower and airborne sound loss of no less than 43dB DnTw+Ctr. Approved Document E sets out details pertaining to the resistance to the passage of sound.

This Approved Document, as part of UK Building Regulations helps to ensure that newly built or converted houses and residencies, flats and residential spaces and other relevant buildings are constructed to minimum standards that provide ‘reasonable resistance to sound from other parts of the same building and from adjacent buildings.’ All of our tests are fully compliant with Approved Document E and our expert team have been carrying out compliant tests for many years, for thousands of satisfied customers throughout the UK.

We understand the sectors our clients work in. Our advice is not only technically robust but also practical and helpful to our client’s particular situation. At AF Acoustics, we always look at the bigger picture and work towards the ultimate development goal.

In order to provide you best solutions, we will listen to your needs, present you with robust solutions and deliver acoustic consultancy through our considerable experience. Our ever-expanding knowledge-base allows us to provide cost-effective and streamlined solutions.

Our consultants are very experienced and have a proven track record on both small scale projects and major projects. As we are a lean and small company, we have lower overheads and therefore offer exceptional value for money.

Airborne sound (or airborne noise) is sound that is transmitted through the air. Airborne Sound Insulation is the insulation against noise originating in air, e.g. voices, music, motor traffic, wind. The greater the airborne sound insulation between two rooms, the lower the resulting sound level in the receiving room.

This is unlike Impact Sound Insulation that protects against noise originating directly on a structure by blows or vibration e.g. footsteps above, furniture being moved, drilling and hammering the structure.

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Call us today for a quote on 020 3372 4430
Or you can email us at info@af-acoustics.com
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Adrian Finn

AF Acoustics lead Acoustic Engineer, Adrian is your first port of call for all sound insulation testing questions enquiries and surveys.

Working Hours

  • Monday 08:00 - 18:00
  • Tuesday 08:00 - 18:00
  • Wednesday 08:00 - 18:00
  • Thursday 08:00 - 18:00
  • Friday 08:00 - 18:00
  • Saturday Closed
  • Sunday Closed