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. The Building Regulations Approved Document E (ADE) states all new dwellings and renovated constructions should undergo 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. As a result of this, we try to ensure that you are issued with a sound insulation certificate as fast as possible. We take great pride in providing our certificates to you as soon as possible after the tests.

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 is a Sound Test?

Walls and floors that separate dwellings in a building are expected to be sound tested, as mandated by Document E of Building Regulations. Only dwellings that have used Robust Details, which licensed before the installation, are exempted from the test. Sound insulation tests examine airborne and impact sound moving between separating walls and floors. The tests include party walls and floors between structures or between spaces within a new development.

What is involved in Sound testing?

Workers on a site will vacate the premises while the sound test is being conducted. This will facilitate an enabling and quiet environment for the tests to be carried out. Undertaking sound tests on site varies according to the size and complexity of the building project and the site conditions. Generally, a sound insulation test takes about 90 minutes for a simple, regular sized project.

Once this is done, the sound test engineers give temporary results while they’re still on the site. They will also provide suggested solutions to possible problem areas noted during testing.

The entire report and individual sound test certificate will be sent to you the day after. The way a sound test is conducted is determined by ADE of Building Regulations. It mandates that in all developments, every 10 units in a group or sub-group will undertake one set of tests. It explicitly states what a sub-group is in Section 1. Buildings to be tested are categorised into three kinds: houses, flats and rooms like care homes, student accommodation and hotel rooms. The extent of testing required for these three groups is shown below.

Why is Sound Insulation Testing Required? Why is it Important?

From 2003, Approved Document E states that all new UK builds must undergo pre-completion sound insulation testing. Results for impact sound should be 62dB L’nTw or less while those for airborne sound insulation should be 45dB DnTw+Ctr or more. ADE ensures that new building are resistant to noise from adjoining buildings and other rooms within the same building. Sound testing is essential due to the fact that sound impacts us wherever we are, whether it’s at home, leisure or the office. Reduced noise in the partitions and flooring of a structure leads to greater ease and a more efficient environment.

Sound insulation and having privacy while speaking are crucial for a number of reasons. When sound insulation is deficient, it can cause discomfort to occupants. For instance, an inhabitant in an apartment building sleeps during the day and works at night all the days of the week. If the neighbour in the upstairs flat has friends over and plays loud music, without a good sound insulation system, the working occupant will be uncomfortable and uneasy. This is one way sound insulation can affect how a person lives. There are also developments where the neighbouring units are used for different purposes. In such cases, a sound test ensures that the noise coming from each unit is minimal.

How Do I Know if I Need a Sound Test?

You need sound insulation testing if you:

  • Build a new development of 2 or more dwellings / flats
  • Convert a former single dwelling into flats
  • Build a Nursing Home or rooms for residential use, i.e. hotel or hostel
  • Have designs which do not adhere to Robust Details

Document E of the Building Regulations explains sound insulation testing and makes it a necessity.

To conform, you can either follow the procedure outlined in ADE or make use of Robust Details. Robust Details are design details for separating elements, which have been tested before to comply with Document E standards. When you use it, you don’t have to take a sound insulation test. However, you must abide strictly by the design from the Robust Details approved list. With sound testing, however, you’re free to pick from any design, including more cost effective and appropriate ones. This makes it a more efficient process than Robust Details. It also gives architects the opportunity to evaluate their design and give your structure a much better sound insulation which will increase sound performance.

How much does sound insulation testing cost?

Call us or email us to get a free quotation for your building. Our prices are extremely competitive and we’ve worked on developments of various sizes and types. You’re also assured of a quick turnaround time for your sound insulation test report and certificates.

Sound Insulation Test Time

The ideal period for a sound insulation test is after the fitting of windows and doors, and before the building is finished. If you want, AF Acoustics can conduct tests before then to find out if there are any problems on your property. 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

The Procedures of a Sound Insulation Test

The method of taking the test is not complex and our sound test engineers can explain it thoroughly on site, if you wish. 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 background noise level is also measured. The higher the background noise then the higher the source noise will need to be set, since the resulting noise level in the receiver room needs to be 10dB higher than the background noise at all measured frequencies. Airborne sound tests are conducted in this manner: two singular speaker positions are used for every source room. The noise in the receiver room is measured to determine the variations in noise level between the source and receiver room.

The variations or differences in noise level are ‘corrected’ to take into consideration the already present background noise in the receiving room and the reverberation time – measure of time needed for a sound to decay or be absorbed in a closed room by 60dB. Impact sound tests are performed with a tapping machine positioned on the floor of the source room. The noise level is then recorded in the room below. Calculations are undertaken, and results achieved. The results are crosschecked to ensure they meet Document E of Building Regulations target. 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

You can expect UKAS calibrated equipment from us, as stipulated by Building Regulations. Our certified engineers conduct tests to meet the current guidelines. An airborne test calculates the amount of sound moving through a separating element. A loudspeaker and noise generator is used in one room while a sound level meter is used in both rooms for measuring level of noise. A sound level meter and a tapping machine which drops metal hammers is used for impact testing. Sound insulation tests are conducted in liveable rooms like the sitting room, lounges, kitchen/living spaces and bedrooms. Test findings are fed into a report that will be sent to the client. This report will always be acceptable to Building Control and will help you to get your development signed off.

Sound Insulation Testing is necessary for these types of builds:

For sound testing we usually undertake impact and airborne sound test on buildings. This affects the separating floors and walls between habitable rooms of buildings and developments.

A new building with not less than two rooms

With the sound test, you can be certain that the property has a good acoustic performance.

Redevelopment of a building with a single dwelling into flats

The development that has been converted must conform to Building Regulations sound requirements.

Designs without Robust Details

The Robust Detail Scheme, set up in 2004 by Robust Details Ltd, architects create design details for walls and floors that were tested formerly for sound insulation and meet the sound performance parameters stated by Part E of Building Regulations. If the design does not completely follow Robust Details, sound insulation testing will occur to be certain the building meets ADE criteria. The minimum criterion is based on various factors such as the purpose of the development and if it is a permanent dwelling or rooms to be used as residences like students’ accommodations and hotels.

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 HaveringatteBower. 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 choose AF Acoustics for Sound Insulation Testing?

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

Sound testing experience of over 15 years

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. We have over 15 years of experience satisfying the acoustic needs of UK businesses and homeowners with a proven track record on both small scale and major projects. You can always rely on us for exceptional value for money.

Competitive prices

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

Prompt and productive consultancy

Our expert acoustic advice is tailored to your specific needs based on our experience which enable us to provide strong solutions. When you contact us for expert direction, we make it our utmost priority and convey exact answers quickly. We suggest compelling solutions that are in accordance with your present and long-term needs.

Test dates that are flexible

Because your convenience is important to us, we provide several options to help you choose a test date that is best for you. If you want to schedule sound insulation testing in HaveringatteBower, 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. The report will be detailed and thorough so that all necessities are written out and any advice provided.

AF Acoustics sound testing services

AF Acoustics provide a scope of exhaustive and detailed acoustic solutions for clients across the country, making certain our techniques have the best quality and performance. Telephone or email us today for more data on how we can assist you with your acoustic requirements.

Airborne and impact tests for floors/ceilings

Impact and airborne floor tests are conducted on ceilings/floors between rooms. The calculation of the sound level transferred from one unit to another through a separating floor via impact is called an impact test. Airborne and impact tests are conducted on the floor partitions between liveable rooms.

Testing in line with Part E of Building Regulations

Document E of Building Regulations requires certain criteria for the sound performance of a dwelling. Our sound insulation tests are conducted in accordance to these criteria. For new buildings, results for impact sound should be 62dB L’nTw or less while those for airborne sound insulation should be 45dB DnTw+Ctr or more. Converted structures expected impact sound results increases by 2dB L’nTw while the airborne sound results reduces by 2dB DnTw+Ctr.

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 routinely give advice to developers and project managers from the beginning of the project, guaranteeing certainty when the time for a sound test is at hand. 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

Acoustic design testing in schools in line with BB93

Building Bulletin 93 (BB93) states the benchmarks for the acoustics of school buildings. It additionally portrays the typical methods for aligning with the Building Regulations. If you’re developing a new school in HaveringatteBower, we can test it to find out if it aligns with BB93.

Acoustic Design

AF Acoustics provide extensive design services and consultancy on a variety of buildings. We have the ability and experience to create bespoke solutions, and have solid working information of accessible acoustic items. We will create design solutions appropriate for the explicit requests of the construction.

When constructing a building, it’s vital you get advice from the right acoustic consultant on time. AF Acoustics uses professional expertise to discover your acoustic needs early on and proffer ideas on how to meet them.

We can help with:

Acoustic detail plan for architects associated with advancements on residences adhering to ADE, BS8233, etc. Detail design in educational, healthcare and commercial schemes for compliance with the relevant guidance Specification and design of building services for noise control in residential and other noise sensitive scenarios Improving sound and public address system in halls, conference rooms etc.

Contact AF Acoustics specialist for sound insulation test quotes

At AF Acoustics, we are an independent acoustic consultancy. Our work embraces acoustic surveys, acoustic design and investigation work in the fields of planning and noise, architectural and building acoustics, the monitoring and control of vibrations and air tightness testing. We will give you sound advice and guidance no matter who you are or the kind of project you have. To get an accurate quotation, either call us or email info@af-acoustics.com

020 3372 4430 Contact us

We would like to know the following

Give us the following information when contacting us

The development’s location

Where in HaveringatteBower is your construction?

How many dwellings are there?

Tell us how many dwellings you have in the property.

Number of levels in the structure

For an accurate calculation of the quote, tell us the number of storeys

Dwellings arrangements per level

This will also be needed to determine scope of the testing and provide an accurate quote

Kind of property

Tell us the kind of property because different buildings require different amounts of tests.

New Build or conversion project

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.

Sound Insulation Testing Regulations

Our ADE compliant sound tests can help you gain credits for Code for Sustainable Homes and EcoHomes environmental assessment structures.

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)

According to Section 5.1 of the Scottish Building Standards, “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.” The following are exempt from the testing techniques given in annex 5.C. of the Scottish Standard and Standard 5.1 – completely segregated rooftops, houses or walkways whose access is only used for upkeep or for the utilization of the inhabitants of the dwelling beneath.

How to make sure you pass your 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. We offer design services that help you construct separating walls and floors with good sound performance that meet ADE demands. We can study design reports, complete site visits and sound test the development to provide you with the level of assessment and consultation that your project requires from start to finish. The following will give you a better chance of passing the sound test: Inner and outer doors and windows have been installed and can be used Fit and seal skirting boards Light switches, plug sockets, and light fittings are adequately fixed. Our accomplished acoustic consultants work with developers, planners, contractors, and architects of all sizes from the early stages of the building plan to help limit any potential sound insulation performance problems to the completion of the construction, guaranteeing that all properties meet the criteria of Building Regulations Document E 2003.

Test report certificates

After the test, AF Acoustics’ competent and well trained engineers can let you know the verbal results of your sound test and provide feedback on issues noticed during the test. We endeavour to send an investigation and report certificate the next working day. 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 a partition wall or floor does not comply with Part E standards, repair work and another sound test will be needed. We can give robust advice on that to ensure you pass.


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