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.

At the completion of the test, a sound insulation certificate is issued. Without the certificate, Building Control will not release the building completion certificate to the contractors and developers of the project. We know how important a sound insulation certificate is to you. That is why we work hard to make certain that you get the certificate quickly. We take great pride in providing our certificates to you as soon as possible after the tests.

Our fully trained sound insulation test engineers can be on site when you need them. Your AF Acoustics engineer will give you immediate verbal results from the sound test, and you can will have a written report 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 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 involved in Sound Insulation Testing

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. The process of a sound test is determined by the size and complexity of the site being tested. A dwelling or development of normal size and simplicity will more than likely be tested in 90 minutes.

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 the next day. 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. Buildings are divided into three kinds for the test – houses, flats and rooms built for or converted to residential dwellings, like student accommodation, care homes and hotel rooms. How much testing that should be done on each group is listed below:

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. The minimum airborne sound insulation test result should be 45dB DnTw+Ctr while the maximum impact sound test result should be 62dB L’nTw. The aim of Approved Documet E of the Building Regulations is to establish a minimum standard for the reduction in noise levels between all dwellings in a new or refurbished building. 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.

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. Sound insulation helps improve the quality of a person’s life in diverse ways. In a structure with flats for mixed purposes, a sound insulation test will make sure that there is maximum sound resistance from party walls and floors and less noise.

How to Know if You Need Sound Insulation Testing

You need a sound insulation test if you’re:

  • Constructing a nursing home or residential rooms like hostel or hotel rooms,
  • Converting a building with a single dwelling into flats,
  • Constructing a property with two or more units,
  • Using designs without Robust Details to build

ADE thoroughly explains sound testing and makes it compulsory.

Either you follow the pre-completion sound testing process stipulated therein or you use Robust Details. This way, you have conformed to 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. Sound insulation testing is a more flexible approach. You can pick from a plethora of designs, as opposed to Robust Details. Conducting on-site pre-completion sound testing also enables the architects more scope with their design and can lead to improved sound insulation performance.

How much does sound insulation testing cost?

Simply contact us and we will be able to provide a free, no obligation quotation as to the requirements and costs for your development. 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

A sound test is usually conducted just before the construction is completed, and when all the doors and windows have been fixed. However, we can test your building earlier to check for problems. 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.

The Process of a Sound Test

Our sound test engineers can answer your questions and make the sound test process easy to understand on site, during the time of the test. For partition walls, airborne tests are carried out. For floors there are two types, airborne and impact tests.

A big or multidirectional speaker, with a generator of pink or white noise is used to the biggest room. A sound level meter is then used to take noise measurements within the source room and the receiver room. Noise in the background is also calculated. More noise in the background means a higher level of source sound will be created since it’s supposed to be 10dB higher than background noise on all calculated frequencies. 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.

The sound difference is adjusted to make an allowance for reverberation time (time in which the sound decays by 60dB) and background noise in the receiver room. A tapping machine is placed on the floor to execute an impact sound insulation test. The sound level in the room below it is recorded. Calculations are undertaken, and results achieved. The results are crosschecked to ensure they meet Document E of Building Regulations target. Without the mathematical formulae used in the calculations, this is a simple explanation, however, it helps explain the testing process.

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

Kind of Testing Equipments Used

Our licensed engineers use UKAS calibrated equipment to measure sound insulation according to the present standards of Building Regulations. An airborne test is used to check how much sound is moving through the air between partitions. A loudspeaker and noise generator is used in one room while a sound level meter is used in both rooms for measuring level of noise. 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 is done on rooms that can be lived in. E.g. lounges, kitchens, bedrooms and living rooms. 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:

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.

Redevelopment of a building with a single dwelling into flats

All the units that have been built are to be constructed in alignment with Part E of Building Regulations.

Using designs where Robust Details are not included

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 not in line with any Robust Details, it will require sound testing to ensure its compliance with the buildings regulations. 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.

Which areas of the UK does AF Acoustics cover?

AF Acoustics provides acoustic design services to customer nationwide, especially in Petersham. Our clientele also include government agencies, architects, and organisations involved in planning and environmental consultancy. We’re based in several areas across the south east region of UK so that we can give you the most cost effective quote in the industry.

Why you should choose AF Acoustics

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

Sound testing experience of over 15 years

We are able to offer helpful functional solutions that will solve our customer’s needs. By doing this, we have been able to continuously satisfy clients in the UK and meet their acoustic needs for over 15 years, providing great value for money.

Competitive rates

To make certain that all clients in Petersham can pay for excellent sound insulation testing services, we have one of the best and most competitive prices found in and around Petersham. Contact us right now to get a quotation that’s completely free of charge.

Consultancy that is effective and efficient

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 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.

Test dates that are adaptable

Your convenience is essential to us. This is the reason we provide you with adaptable choices that allow you to pick test dates that are most advantageous for you. If you want to schedule sound insulation testing in Petersham, phone or email us immediately.

Test reports arrive 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. 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 range of comprehensive acoustic solutions to customers nationwide, and we guarantee a high-quality and high-efficiency approach. To find out more about we can help you with your acoustics needs, call or email us right away.

Impact and Airborne floor test

These are taken on separating floors/ceilings between residences. The calculation of the sound level transferred from one unit to another through a separating floor via impact is called an impact test. The adjoining floors/ceilings of rooms intended as residences usually have both impact and airborne sound tests.

PART E Testing

AF Acoustics sound testing adheres to ADE which stipulates information bearing on the sound resistance and performance of a property. 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.

Sound testing

We offer the highest amount of aptitude and high quality service, and are constantly ready to work with our clients to give the most ideal chance of accomplishing a pass certificate. To make sure a new residence meets with the standards of greater than 45dB DnTw+Ctr and less than 62dB L’nTw, an airborne wall test and an airborne and impact floor test will need to be conducted. We routinely give advice to developers and project managers from the beginning of the project, guaranteeing certainty when the time for a sound test is at hand. Call or email us now for more details on our sound insulation testing services and for a quotation to be sent to you, free of charge.

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

BB93 acoustic design tests in schools

Building Bulletin 93 (BB93) explains minimum performance standards for the acoustics of school buildings. It also describes the normal means of demonstrating compliance with the Building Regulations. If you’re constructing a new school in Petersham, we can test the sound performance to evaluate if it meets the standards of BB93.

Acoustic design details

We have provided acoustic design services and consulting to various clients with different types and sizes of dwellings. We also give customised solutions and have a deep understanding of acoustic merchandise. Due to this fact, we will provide precise design answers suitable for the specific needs of the construction.

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

We are able to help with:

Acoustic detail design for architects engaged with residential improvements in consistence with Part E Building Regulations, BS8233 and so on. Detail design in educational, healthcare and commercial schemes for compliance with the relevant guidance Construction designs and specifications for sound control in residential areas and other noise sensitive developments. Public address and sound reinforcement system

Get a sound insulation testing quotation by contacting our experts

We are an independent acoustic organisation that handles everything concerning acoustics including survey, design, architectural and building acoustics and air tightness testing. Our professional guidance and advice is provided to private individuals, businesses and government agencies amongst others. You can contact us by sending us an email on info@af-acoustics.com or calling us for a free quote.

020 3372 4430 Contact us

Giving the following information to us will be helpful

Give us the following information when contacting us

Place where the building is being built

Provide the location of your building in Petersham.

How many dwellings are there?

Number of dwellings on the property

Number of floors in the building

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

Number of dwelling units per storey

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

Kind of structure

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

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 insulation 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.

Building regulations document E resistance to the passage of sound (England and Wales)

We have fully accredited engineers who can visit your property to issue appropriate certification that complies with the building control.

Standard division for structures (Scotland)

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 to make sure you pass your sound test

The most efficient way to make sure you pass sound insulation test is to have a plan that puts sound insulation into consideration from the begining. You don’t have to spend too much for this and it will save you money in the long run, ensuring you don’t pay remedial or re-test expenses. If you’re not certain of how to construct your party walls and floors, to meet Document E 2003 targets, simply contact us for an efficient design service. The degree of guidance you require can vary, from site visits and comprehensive design reports, to simpler initial testing to know the starting point for construction. Take the following action to give your building the best opportunity to pass the sound insulation test: All windows and door have been fixed and are functioning Skirting boards are fixed are sealed Light fittings and switches and plug sockets are fitted 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.

Test 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

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. In the event that some part of the building does not meet up with the conditions of Document E, remedial work and a retest is required. We give remedial design advice to help you achieve Building Regulations standards.


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