Sound insulation testing is used to measure the resistance of sound provided by an element of a building (such as a floor or wall) between dwellings. It essentially measures the effectiveness of the sound proofing treatment installed as part of a build or property development. 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. As a result of this, we try to ensure that you are issued with a sound insulation certificate as fast as possible. In fact, we are proud of our turnaround times and our team will issue your certificates as quickly as we possibly can.

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?

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. The airborne and impact sound going through new and old structures are evaluated by sound testing. This can impact adjoining walls and floors between the structures.

What is part of 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. A sound insulation test on a project is taken according to the scale and complexity of the construction and the conditions of the site. A dwelling or development of normal size and simplicity will more than likely be tested in 90 minutes.

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.

You will get a detailed written report and sound test certificate about a day after, if possible. The sound testing guidelines are stipulated in Building Regulations ADE. It requires one set of test to be conducted on 10 units in a group or sub-group. You can find out what is meant by a sub-group in Section 1 of ADE. ADE goes on to define and group the type of structures that will undergo testing. They are houses, flats and rooms that are being used or are planned to be used as residences; such as student accommodation, care homes and hotel rooms. How much testing that is required for each category can be found below.

Why Sound Testing is Required

From 2003, Approved Document E states that all new UK builds must undergo pre-completion sound insulation testing. The minimum airborne sound insulation test result should be 45dB DnTw+Ctr while the maximum impact sound test result should be 62dB L’nTw. ADE ensures that new building are resistant to noise from adjoining buildings and other rooms within the same building. 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.

There are so many more reasons why sound insulation and speech privacy are vital. An inefficient sound insulation treatment will lead to uneasiness for the inhabitants of the dwelling. 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 just one example of how sound insulation can affect the quality of life of people in different ways. 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.

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

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. Robust Details are design details for walls that were tested formerly and meet the sound performance parameters stated by Part E of Building Regulations. 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. Sound insulation testing is a more flexible approach. You can pick from a plethora of designs, as opposed to Robust Details. 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.

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 tested all types and sizes of construction in the UK and issue a report and sound test certificate within 24 working hours. We offer one of the best prices. If you get a better price from another company, let us know and we will try to beat it.

Ideal Period for a Sound Insulation Test

The best time for a sound insulation test is just before the construction of the property is finished and after all windows and doors are fixed. However, in the case of a problem we can take the test before then. 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 testing procedure is quite simple and our engineers are happy to explain this on site. Airborne tests are conducted on party walls while impact and airborne tests are conducted on party floors.

The source sound is produced with a white or pink noise generator with a dodecahedron speaker in the largest room. A sound level meter is then used to take noise measurements within the source room and the receiver room. Background sound is also calculated. Noise in the receiver room should be 10dB more than the background noise at all frequency measurements, so source noise is set to be greater than background noise. 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 sound pressure level at the receiving room, which is below the source room, is measured. 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. This is a simple way of explaining how a sound test is conducted.

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. An airborne test is used to check how much sound is moving through the air between partitions. Equipment used for the test include a noise generator, speakers and sound level meter. For impact sound testing, the equipment used is a tapping machine that uses dropping hammers to create noise and a sound level meter. Sound insulation tests are conducted in liveable rooms like the sitting room, lounges, kitchen/living spaces and bedrooms. 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 necessary for these types of builds:

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.

Property with two or more units

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

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

The transformation of a single dwelling property into flats must adhere to the sound insulation standards of Building Regulations.

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.

Towns in the UK AF Acoustics Services can be Found

AF Acoustics provides acoustic design services to customer nationwide, especially in Waltham-Cross. Our clients include architects, planning and environmental consultancies. We also work with government agencies and private individuals. We’re based in several strategic locations in the south east of UK to enable you get the best quotation and price possible.

Why choose AF Acoustics for Sound Insulation Testing?

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

More than 15 years’ experience

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.

Great prices

We want to ensure that you get the best value for your money. That is why we have one of the most unbeatable rates in and outside Waltham-Cross. Call us or email today to get a free quotation.

Prompt and productive consultancy

We offer strong durable advice based on your problem and give highly knowledgeable acoustic advice. 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

Because your convenience is important to us, we provide several options to help you choose a test date that is best for you. Take the first step towards your sound insulation testing in Waltham-Cross by calling us now.

Fast turnaround for your report

We try to provide test reports within 24 working hours. That way, you can take the right action based on the results of the test. 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, Phone or email us today for more information on how we can help you with your acoustic requirements.

Airborne and impact tests for floors/ceilings

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.

Testing in line with Part E of Building Regulations

Our sound insulation tests meet the requirements of Building Regulations Part E, which describes building structures resistance to the movement of sound within and from adjoining structures. 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 test

Our services and expertise is unbeatable and we are glad to work with our clients to help pass their sound insulation tests. 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 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. 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 tests in schools in accordance with BB93

Building Bulletin 93 (BB93) describes the minimum requirement for the acoustics of a school building. It also stipulates how a school can conform to Building Regulations. If you’re constructing a new school in Waltham-Cross, we can test the sound performance to evaluate if it meets the standards of BB93.

Acoustic design details

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.

As anybody who has needed to handle the acoustics for a building will know, it’s essential to get proper advice, early in the project from a good acoustic expert. AF Acoustics can help you with identifying the right acoustic needs and standard for your construction at the beginning period and advise you on how to meet them.

We are able to assist with:

Acoustic detail plan for architects associated with advancements on residences adhering to ADE, BS8233, etc. Detail plans for the educational, commercial and healthcare industry so as to meet with the current criteria. 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.

To get a sound test quote for your building, call or email our highly skilled professionals

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. 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

Please send the following information to us

When contacting us for sound insulation testing quote, we will need you to provide the following information

Location of development

Where is your development situated in Waltham-Cross

Number of dwellings in the building

Tell us how many dwellings you have in the property.

Number of levels in the structure

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

Number of dwelling units per storey

To help us get you an accurate quotation and evaluate the scope of the test to be taken, tell us how many dwellings there are per floor.

Type of development

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

New dwelling or converted property

These two go require different types performance, so let us know which one it is and you’ll get an accurate test and quotation.

Building regulations for sound test

We undertake sound insulation test on various buildings that adhere to Building Regulations Document E. Testing can also enable you get more credits for Code for Sustainable Homes and EcoHomes environmental assessment constructions.

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

Our certified engineers can come to your building whenever it might suit you to undertake sound insulation testing to Part E of Building Regulations adherence, recognised by Building Control.

Scotland Standard division for properties

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 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 Do I Pass a Sound Insulation 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. We offer design services to enable separating walls and floors with good sound insulation to meet the requirements of ADE, 2003. Our consultation process is led by your project requirements and may include assessment of design reports, test of the development and multiple site visits. The following will give you a better chance of passing the sound test: All windows and doors have been fitted and work Skirting boards are fitted Light switches, plug sockets, and light fittings are adequately fixed. Our professional acoustic professionals work with contractors, architects, developers, and planner from the beginning of the design to make sure that all requirements are met.

Analysis 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?

A certificate will be issued to you whether the sound insulation treatment of the building meets the requirements of Document E of Building Regulations or not. 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