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. The Building Regulations Approved Document E (ADE) states all new dwellings and renovated constructions should undergo sound testing.

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. As a result of this, we try to ensure that you are issued with a sound insulation certificate as fast as possible. We pride ourselves on the facts that our sound insulation certificates are issued with speed and efficiency.

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

Our Guarantee

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

What Sound Testing Does

Developments must test all walls, floors and ceilings that separate buildings or neighbours in a dwelling, to conform to Approved Document E (ADE) of the Building Regulations. You may not have to test your building if you used Robust Details which were approved before their installation. Sound 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.

The Procedures Involved in a Sound Insulation Test

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. Sound insulation testing varies by size, complexity and conditions of site tested. Generally, a sound insulation test takes about 90 minutes for a simple, regular sized project.

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

You will get a detailed written report and sound test certificate about a day after, if possible. 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. 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 is required for each category can be found below.

Why Should Your Dwelling Undergo Sound Testing

Before completing a building, all new constructions should be tested for sound insulation, as stipulated by Approved Document E since 2003. The impact sound test result should not be more than 62dB L’nTw and the airborne sound insulation should not be less than 45dB DnTw+Ctr. 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 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.

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 impacts people’s lives in various 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.

Does Your Development Need a Sound Insulation Test?

Are you converting your property into several units? Does your design not use Robust Details? Are you constructing a new building with more than two rooms? Are you building a nursing home or rooms that will used for residential purposes, like hotels and hostels? If so, your structure needs to undergo a sound test. It is imperative that sound insulation tests be undertaken, as explained and stipulated by ADE.

There are two ways in which to show compliance. You can either test to the regime set out in Approved Document E (ADE), or pay to use Robust Details. Robust Details are design details for separating elements, which have been tested before to comply with Document E standards. Using Robust Details, without taking a test, limits you to the design you’ve picked. 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. 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

Call us or email us to get a free quotation for 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

Sound testing procedure is quite simple and our engineers are happy to explain this on site. The separating walls undergo airborne tests while separating walls and floor undergo airborne and impact tests.

The source sound is produced with a white or pink noise generator with a dodecahedron speaker in the largest room. The noise from the source room and received by the receiver room, and background noise 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.

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 tests are conducted by fixing a tapping machine on the floor. The sound pressure level at the receiving room, which is below the source room, is measured. This is used in calculating and computing the results. These results are checked against Building Regulations ADE conditions for that kind of dwelling. Without the mathematical formulae, this explanation highlights sound insulation testing procedures in a simple manner.

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

Sound Testing Equipment to Expect

Our licensed engineers use UKAS calibrated equipment to measure sound insulation according to the present standards of Building Regulations. Airborne sound test is the measurement of sound moving through the air through a wall or floor. We use a loudspeaker and noise generator that produces white or pink noise on one side of the partition, and measure with a sound level meter on both sides to calculate the sound insulation performance of the partition. We use a tapping machine, which drops metal hammers onto the floor to create impact noise. We then measure the amount of sound that passes through the partition with a sound level meter in the room under the tapping machine. The tests are carried out in rooms suitable for residential use like bedrooms, lounges and kitchens. The outcome of the test is written in a report and sent to the customer. This report helps Building Control sign off your building.

It’s important to undertake a sound test if you have this kind of building:

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 not less than two rooms

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

Design that don’t have Robust Details factored in

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 building design is slightly different from Robust Details, a sound test is essential so that Building Regulations criteria can be met. Minimum criterion differs based on the type and purpose of the development. A development with rooms intended as residences, like a hostel or hotel, won’t have the same criteria as a structure for permanent dwelling.

Areas in the UK AF Acoustics Conduct Test

AF Acoustics provides acoustic design services to customer nationwide, especially in Harrow. 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 you should choose AF Acoustics

Our sound testing experts and engineers have worked with various homes and businesses in Harrow. Our clients refer us to others because of the following benefits of working with us.

Sound testing experience of over 15 years

With more than 15 years of experience, we have a deep knowledge of our customers’ industry and provide actionable strong advice tailored to their needs. In more than 15 years, we have acquired extensive experience with providing acoustic solutions to private individuals and organisations in the UK, no matter the size or scale of the project. You get expedience and value for the price.

Great prices

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

Fast and efficient 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 guidance, we make it a priority and deliver accurate answers fast. We recommend effective solutions that are most in line with your current and long-term needs.

Flexible test dates

We make your convenience our priority. Therefore, we offer flexible alternatives that can help you select test dates that suit you itinerary. Contact us today to get sound testing in Harrow

Fast turnaround for your report

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 conveyed report will be exhaustive, covering every issue point by point to guarantee that the best suggestions are given.

Sound insulation testing services AF Acoustics undertake

AF Acoustics offer a variety of complete acoustic slutions to clients all over the Uk, Contact us now for more information on how we can assist you with your acoustics requirements.

Impact and airborne floor test

These are performed on floors and/or ceilings between units. The measurement of the extent of noise transmitted directly through impact from one adjoining room to another is known as impact testing. Airborne and impact tests are conducted on the floor partitions between liveable rooms.

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. The impact sound test of new dwellings should be 62dB L’nTw or less and airborne sound insulation 45dB DnTw+Ctr or more while impact results for reconstructed properties should be 64dB L’nTw and airborne sound insulation 43dB DnTw+Ctr or more.

Sound testing

We want to give our customers the most highest chance to acquire a pass and via our offer skilled services. In new build properties an airborne test or an airborne and impact test may be required to ensure it meets the requirements of greater than 45dB DnTw+Ctr and less than 62dB L’nTw. 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

BB93 testing of acoustic design in schools

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. Are you building a new school in Harrow? Contact us to arrange a sound test and make sure it meets the benchmarks 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.

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

We can assist with:

Creating acoustic detail plans for architects involved in residential construction that conform to Document E of Building Regulations, BS8233 and so on. 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 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

We would like to know the following

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

Construction’s location

Provide the location of your building in Harrow.

Number of dwellings

Tell us how many dwellings you have in the property.

Number of floors in the building

For the right calculation of your quotation, tell us how many levels are in your building.

Dwellings configuration per floor

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.

Types of construction

Knowing the kind of building is essential because it helps identify the type of test that will be conducted.

New construction or refurbished building

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

Sounds test in accordance with building regulations

We provide sound testing and sound insulation testing on all types of buildings, for compliance with Part E Building Regulations in England and Wales and Section 5 of the Scottish Building Standards. Testing can also gain credits for Code for Sustainable Homes and EcoHomes environmental assessment schemes.

Building regulations document E resistance to the passage of sound (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.

Standard division for developments (Scotland)

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.” 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 Do I Pass a Sound Insulation Test?

Make sure you pass your sound test by having efficient sound insulation included in the building design. It saves time and money and helps you avoid repair work and re-test expenses. We offer design services to enable separating walls and floors with good sound insulation to meet the requirements of ADE, 2003. Whether you want some initial tests on your project, or comprehensive reports at the end, we can help you at the level that you need. The are required in order to have good conditions to undertake the sound insulation tests: All windows and doors have been fitted and work Fit and seal skirting boards Plug sockets, light switches and fittings are in place and working. 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

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.

The results

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


Sound Insulation FAQ’s

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Working Hours

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