Sound testing calculates the extent to which sound is blocked by the partition (walls, floors etc) of a building between dwellings. It evaluates the efficiency of the soundproofing materials that make up the structure. It has been a mandatory part of the Building Regulations for new build and refurbishment projects since Approved Document E (ADE) was revised in 2003.

As many contractors and developers have found to their detriment, without a sound insulation certificate, the Building Control Officer will not issue a completion certificate. 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. We pride ourselves on the facts that our sound insulation certificates are issued with speed and efficiency.

Our highly capable sound test engineers will be available on site when you need them. They will give you a verbal result of the test, once taken and a written report will be issued to you by the following working day.

Our Guarantee

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

What is a Sound Insulation Test?

In order to comply with Part E of the Building Regulations, developments will require the testing of separating walls and floors. The only exception is where Robust Details have been 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.

What is involved in a Sound Test

The sound test itself produces very high levels of noise but also requires relatively quiet conditions on site. For these reasons, any workforce in the testing area will have to leave temporarily to ensure test accuracy. 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.

The sound testing engineers then proceed to give verbal results on the site and offer helpful advice on any problem areas noticed during the duration of the test.

The entire report and individual sound test certificate will be sent to you the day after. Every 10 units in a group or sub-group are to be tested, according to ADE. A sub-group is stipulated in Section 1. Of ADE ADE also states the categories of developments that should be tested. There are three: rooms, flats and houses (including bungalows) that are lived in. Examples are student accommodation, hotel rooms and care homes. How much testing that should be done on each group is listed below:

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

Document E of Building regulations, from 2003, made it compulsory for all new UK constructions to undertake a pre-completion sound test. 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. Testing for sound insulation is vital because sound influences how we live in the office, while relaxing or in the house. Restricting the sound that moves between floors and walls could result in a more relaxed and better surrounding.

Insufficient sound insulation causes distress and comfort while an effective sound insulation system brings about speech privacy. This is one of the several reasons why sound insulation is a key element in building. Let’s take a look at this scenario. An individual living in a block of flats might spend the weekend with friends relaxing and playing loud music. If the sound insulation on adjoining walls and floor is insufficient, the music will be distressful to neighbours, especially if they work at night. Sound insulation helps improve the quality of a person’s life in diverse 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.

Do I 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 2 ways you can comply. Test for sound insulation using the method of Approved Document E or use Robust Details in your development. Robust details are separating elements that have been pre-tested and conform to Approved Document E sound insulation standards. With it, you don’t need a sound insulation test, but you must completely follow every aspect of the design from the Robust Detail Approved list. Being able to adapt your design to suit your needs is more efficient and costs less in the long run. When on-site pre–completion building sound tests are taken, architects have more scope with their design and can increase the sound insulation performance of the construction.

Price for Sound Insulation Testing

Contact us and we’ll give you a free quote on the sound test cost based on the requirements of your building. We have handled all kinds of sound insulation projects in UK and issue a report and certificate as quickly as possible. Our prices are affordable too and can beat others.

Sound Insulation Test Time

We can undertake your sound tests when your building has almost been completed. By this time, you should have fixed internal and external doors and windows. We can conduct sound tests beforehand if required. These are the things we need to conduct the test:

  • 240V power supply
  • A quiet environment
  • Access to all the units of the structure unless places to test have been decided before then.

How a Sound Test is Done

The method of taking the test is not complex and our sound test engineers can explain it thoroughly on site, if you wish. The boundary floors and walls get airborne tests. Floors get an additional impact test.

A pink or white noise generator and a large speaker is used for the test in the biggest room between the two undergoing testing. The sound generated and received 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. When conducting airborne sound insulation tests, two speakers are placed in each source room. The noise level in the receiving room is measured to get the sound difference between the source and receiving room.

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. The room under it is then measured for the noise levels. Once the calculations are completed and the result is achieved, it is compared with Building Regulations Part E standards. Without the mathematical formulae, this explanation highlights sound insulation testing procedures in a simple manner.

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

Kind of Testing Equipments Used

The testing equipment used are UKAS calibrated. Our highly qualified engineers test based on present Building Regulations conditions. The calculation of the level of noise transmitted through the air between two adjoining units is known as an airborne sound insulation test. We use pink or white noise generator and speakers on one side of the partition. A sound level meter is used on calculating sound in both units. 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. The tests are carried out in rooms suitable for residential use like bedrooms, lounges and kitchens. You will get the test results in a report within a working day. This report can be used to help sign off your building as it is accepted by Building Control.

These kinds of properties should undergo a sound insulation test:

Sound testing measures the impact and airborne sound moving through new and old adjoining buildings. This could affect the separating walls between buildings or in-between the spaces in a development.

A new building with 2 or more dwellings

This ensures that a sound insulation system installed in residences meets the requirements of ADE.

A single dwelling that was turned into a development with several flats or units

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

Designed in a way that does not adhere to 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 requirements during testing will depend on a variety of factors such as if the development is intended to be a permanent dwelling, or classified as “rooms of residential purposes” (e.g. hotels, student accommodation, etc).

Which areas of the UK does AF Acoustics cover?

AF Acoustics is an acoustics design services and consultancy company. Our clients can be found nationwide, especially in Woodside-Park. Af Acoustics work with individuals, government agencies, planning and environmental consultancies, and architects. 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 AF Acoustics is the right choice for your sound insulation test

We have worked with many organisations and individuals in Woodside-Park. Our clients have endorsed us for the following reasons:

Over 15 years’ experience

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.

Great prices

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

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 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.

Flexible test dates

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 Woodside-Park, phone or email us immediately.

You get your report the next day

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. That way, you can take immediate action on the recommendations given. Our reports are thorough and cover all the important issues.

AF Acoustics sound testing services

AF Acoustics offer a variety of complete acoustic slutions to clients all over the Uk, Telephone or email us today for more data on how we can assist you with your acoustic requirements.

Airborne and impact ceilings/floor tests

The ceilings/floors of developments undergo impact and airborne floor testing. The calculation of the sound level transferred from one unit to another through a separating floor via impact is called an impact test. These floors in habitable rooms of flats undergo both impact and airborne tests.

ADE testing

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. 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.

Testing for sound insulation

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 regularly provide consultations for project managers and developers from the very start of developments, ensuring peace of mind when it comes time to having a sound test. To find out more about our sound testing services and get a free quotation, contact us now.

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

BB93 Acoustic Design testing in Schools

For a school to meet up with Building Regulation acoustic requirements, it must adhere to Building Bulletin 93 (BB93) which explains the sound insulation expectation for schools in detail. If you’re constructing a new school in Woodside-Park, we can conduct a test to be certain it meets the standards of BB93.

Acoustic plan

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.

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 are able to help with:

Acoustic detail design for architects involved in residential developments for compliance with Part E Regs, BS8233, and so on. Detail layout for the commercial, health and educational constructions in order to align with regulations. Specifications and design details that enable good sound insulation and reduction of noise in residences. Public address and sound reinforcement for conference room, lecture theatres and so on.

Call Our Experts Now For A Sound Insulation Testing Quote

We are an independent acoustic organisation that handles everything concerning acoustics including survey, design, architectural and building acoustics 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

Provide us with the following data

In your email or during your phone call, tell us about the following

The development’s location

Where in Woodside-Park is your construction?

Number of dwellings

Total number of dwellings in the structure

Number of floors in the building

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

Dwellings arrangements per level

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

Kind of property

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

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.

Sound Insulation Testing 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.

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

We can have fully accredited engineers sent to your property at your convenience to provide certification for Building Regulations Part E compliance, recognised by Building Control.

Scotland Standard division for completed constructions

Section 5.1 of the Scottish Building Standards states “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 performed after construction, using the procedures given in annex 5.C. of the Scottish Standards. Standard 5.1 does not apply to: fully detached houses or roofs or walkways with access solely for maintenance, or solely for the use of the residents of the dwelling below.

How to pass a sound test

The most effective way to ensure you pass your sound test is to plan the project with sound insulation in mind. This does not need to be costly, and can save considerable time and expense at the end of the project, not to mention avoiding escalating remedial and re-test costs. 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 following conditions will provide you with an ample chance of passing the sound test: Install and make sure that all external and internal doors and windows are operational Skirting boards are fitted and sealed Light fittings and switches and plug sockets are fitted and working. Our experienced acoustic consultants work with developers, contractors, architects and planners of all sizes from the early design stage to help minimise any potential issues right through to project completion, ensuring that all properties are compliant with Building Regulations Document E 2003.

Test and report certificates

After the sound insulation test, the sound testing engineer will provide provisional results whilst on-site, as well as providing basic feedback about what has been noted during the test, e.g. potential problems or any future areas of concern. A full report and individual sound test certificates can be generated and sent out usually 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 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. In the event of a wall or floor not achieving the Part E requirements, it may be necessary to carry out remedial works before having another sound test carried out. We can provide you with remedial design advice to help you achieve the Building Regulations 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 an assessment 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