The measurement of the sound reduced by partitions in a development, such as a wall or floor, is known as sound insulation testing or sound testing. It assesses how good the soundproofing materials fixed to the property development are. Part E of Building Regulations requires sound insulation in buildings and mandates that all newly completed constructions and rehabilitated developments go through sound testing.

Not doing so is a costly venture for developers and contractors as Building Control will not give a completion certificate for developments that have not undergone the test. Because we understand how the sound insulation certificate affects your building project, we ensure that you get it as quickly as possible after the test. In fact, we are proud of our turnaround times and our team will issue your certificates as quickly as we possibly can.

AF Acoustics’ competent and well-trained engineers, who will be available for testing, can even let you know the verbal results of your sound test. You will receive a written report in the space of a working day.

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Call us today for a quote on 020 3372 4430
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How Sound Testing Works

To completely fulfil Building Regulations Part E requirements, the separating walls and floors of dwellings will be tested, unless approved Robust Details are used. Sound testing measures the impact and airborne sound moving through new and old adjoining buildings. This tests include the boundary walls between buildings and in-between the spaces in a development.

The Procedures Involved in a Sound Insulation Test

A sound insulation test creates a high amount of noise but needs a site with low noise levels to be taken effectively. As a result of this, workers in a testing area might have to leave the development temporarily, so that the test can be free from errors. Undertaking sound tests on site varies according to the size and complexity of the building project and the site conditions. A structure that is simple and the conventional size will usually take 90 minutes to be tested.

Once it is completed, the engineers will give a verbal interim result on the site and basic helpful information on what was noticed during the test, e.g. possible sound issues and future places that could cause problems.

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 to be tested are categorised into three kinds: houses, flats and rooms like care homes, student accommodation and hotel rooms. Find below the testing stipulation for each kind of development.

Why Sound Testing is Required

Sound insulation testing is required because ADE of Building Regulations has made it compulsory for all new buildings to take a sound test prior to finishing construction. 62dB L’nTw or less impact sound and 45dB DnTw+Ctr or higher airborne sound insulation is the required result. This Approved Document, as part of UK Building Regulations helps to ensure that new buildings are constructed to minimum standards that provide reasonable resistance to sound from other parts of the same building and from adjacent buildings. Sound insulation testing is important because sound affects the way we live, whether at work, in the home or whilst at leisure. Noise reduction between walls and floors could result in a more comfortable, productive 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, in an apartment building, the neighbour upstairs might invite friends over during the weekend and put on loud music. The inhabitant downstairs might spend night hours as work time. If the sound insulation is inefficient, this could lead to lots of problems. This is just one example of how sound insulation can affect the quality of life of people in different ways. It can be useful in dwellings with neighbouring units/flats/rooms which have diverse purposes, by guaranteeing that an occupant in a room will hear as little noise as possible from the neighbouring room.

How to Know if You Need Sound Insulation Testing

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

ADE thoroughly explains sound testing and makes it compulsory.

All you have to do is follow the guidelines listed in the document or pay to use Robust Details and you will have fulfilled the requirements. If you choose the latter, you must use Robust Details which are a approved design details for partitioning walls and floors. Using Robust Details, without taking a test, limits you to the design you’ve picked. 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.

Price for Sound Insulation Testing

Call us or email us to get a free quotation for your building. 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 Should the Sound Tests be done?

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. To achieve the best results we would need the following during the test: quietness during the time of the test, 240V power supply and access to all the rooms unless a test plan has been agreed upon prior to the test time.

The Process of a Sound Test

Sound insulation testing is not complicated. Our highly qualified engineers will be willing to explain it in detail on the site. The boundary floors and walls get airborne tests. Floors get an additional impact test.

A big or multidirectional speaker, with a generator of pink or white noise is used to the biggest room. The noise from the source room and received by the receiver room, and background noise is measured with a sound level meter. Background noise is measured to make certain that the source noise is greater. This way the standard of the receiver room having a 10dB higher noise level at all calculated frequencies can be realised. Airborne sound testing is done in a similar way. First, two speaker positions are used for each source room. Then, the level of sound in the receiver room is measured so that the difference in noise level between the two rooms can be calculated.

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 are undertaken, and results achieved. The results are crosschecked to ensure they meet Document E of Building Regulations target. This is of course, a somewhat simplified explanation without the various mathematical formulae involved, but helps to explain the 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 is used to check how much sound is moving through the air between partitions. The equipment we use are a sound level meter, loudspeaker and white or pink noise generator. 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. Testing can only be completed on ‘habitable’ rooms. Habitable rooms can be bedrooms, lounges, living rooms and open plan kitchen/ living spaces. Test findings are compiled in a report and issued to the client. The report will be accepted by Building Control and used for signing off your project.

Sound insulation testing is essential for these dwelling types:

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.

Two or more new build dwellings or flats

This makes sure that the sound insulation for the building meets all the necessary requirements.

Converting a property into several units

When turning the single dwelling into several flats or units, the sound performance requirements of Building Regulations must be met.

Designs without Robust Details

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. If the building design does not strictly adhere to Robust Details, a sound insulation test becomes necessary to meet Building Regulations. 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.

Towns in the UK AF Acoustics Services can be Found

AF Acoustics provides acoustic design services to customer nationwide, especially in Roxeth. Our clientele base includes architects, planning and environmental consultancies, private individuals and government agencies. Our consultants are based in several strategic locations across the south east of the country to ensure that we can provide the most competitive quotations in the industry for sound insulation testing.

Why choose AF Acoustics for Sound Insulation Testing?

We have helped many homes and business owners in Roxeth with their sound tests and building’s sound performance. Our customers endorse and recommend us because of the following advantages of working with us.

Sound testing experience of over 15 years

We are able to offer helpful functional solutions that will solve our customer’s needs. Our clients in the UK are completely satisfied with our acoustic solutions. Irrespective of the type of project you have, minor or major, you can be assured that we’ll give outstanding value for your money.

Affordably rates

To make sure you can afford high quality sound insulation projects in UK, we offer one of the most affordable prices in Roxeth. Contact us immediately and we’ll give you a free quote on the sound test.

Fast and efficient consultancy

We will listen to your needs, present you with robust solutions and deliver acoustic consultancy through our considerable experience. When you reach out to us for professional advice, we make certain that we render accurate solutions rapidly. We suggest productive answers that handle your present and long-term desires to the maximum.

Test dates that are flexible

Our test date options let you pick what will suit your schedule because your comfort is essential to us. Call us to get your sound testing in Roxeth undertaken.

You get your report the next day

Getting your report quickly ensures you can take immediate action. We work towards issuing test reports within the next working day, despite the size or complexity of the construction. The conveyed report will be exhaustive, covering every issue point by point to guarantee that the best suggestions are given.

AF Acoustics sound testing services

AF Acoustics offer a variety of complete acoustic slutions to clients all over the Uk, To find out more about we can help you with your acoustics needs, call or email us right away.

Impact and airborne tests for floors

The ceilings/floors of developments undergo impact and airborne floor testing. An impact test measures the levels of noise transmitted directly through a separating construction. Impact and airborne testing is undertaken between party floors.

Testing in line with Part E of Building Regulations

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. 62dB L’nTw or less impact sound and 45dB DnTw+Ctr or higher airborne sound insulation is the required result for newly completed constructions. On the other hand, 64dB L’nTw or less impact sound and 43dB DnTw+Ctr or higher airborne sound insulation is expected from refurbished buildings.

Sound Insulation Testing

We offer the highest levels of service and expertise and are always happy to work with you to give you the best possible chance of achieving a pass certificate. In new properties, an airborne and impact test will help you guarantee the building meets the requirements of greater than 45dB DnTw+Ctr and less than 62dB L’nTw. We frequently give robust advice to project managers and developers from the start of the construction, ensuring that they’ll have adequate sound insulation to pass a sound test. Simply contact us immediately ad you’ll get a free quotation in addition to more details about our sound testing services.

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 constructing a new school in Roxeth, we can test the sound performance to evaluate if it meets the standards of BB93.

Acoustic Design

We provide acoustic layout services and consultancy for a huge range of building types and sizes. Our experience and expertise enables us to create bespoke solutions and understand diverse acoustic products. As a result, we’re able to provide targeted solutions to the demands of the project.

Getting advice on the acoustics of a development as early as possible is crucial. AF Acoustics can enable you to do that by advising you on the appropriate acoustic requirements of your property very early in the building process and recommending what to do to fulfil them.

We will help you with:

Acoustic detail design for architects engaged with residential improvements in consistence with Part E Building Regulations, BS8233 and so on. Detail plans for the educational, commercial and healthcare industry so as to meet with the current criteria. Specifications and building services design for control of noise in noise sensitive areas. Improving sound and public address system in halls, conference rooms etc.

Contact our professionals for a sound test quotation

We are an independent acoustic organisation that handles everything concerning acoustics including survey, design, architectural and building acoustics and air tightness testing. Our expert consultation is available to individuals and companies with all types and sizes of constructions. We will give you free quotation with highly competitive rates. Simply call us or email info@af-acoustics.com

020 3372 4430 Contact us

Giving the following information to us will be helpful

When contacting us, please give us the following information

Place where the building is being built

Provide the location of your building in Roxeth.

Number of dwellings in the building

What is the number of units in the development?

Total number of floors

To get a precise quote, let us know the total number of floors you have.

Number of dwelling units per storey

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

Types of construction

Let us know the type of development you have so that we can undertake the required tests for it.

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.

Building regulations for sound test

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.

Sound resistance: approved document of building regulations (England and Wales)

Our expert engineers can issue certificates for the sound insulation testing. They can visit the site and conduct the test that will lead to getting a certificate which is in line with Building Regulations and Building Control requirements.

Standard division for developments (Scotland)

In the words of 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.” Tests should be taken at the completion of the building, using procedures given in annex 5.C. of the Scottish Standards. These standards don’t apply to detached structures that have access only for maintenance or are to used only by the occupants who live below.

How Do I Pass a Sound Insulation 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. If you are unsure of how to build the separating floor and wall constructions and associated junctions across your development to satisfy the requirements of Document E 2003, we can offer design advice. 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 Skirting boards are fixed are sealed Light switches, plug sockets, and light fittings are adequately fixed. 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.

Investigation and report certificates

To obtain a thorough evaluation of your building, we issue a report certificate within 24 working hours where possible. Our highly capable sound test engineers will give you a verbal result of the test, once the test is taken and proffer solutions to possible problems 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?

Your test certificate will show if your development passed or failed the test and show if it adheres to the requirements of Part E of Building Regulations. 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