Types of Sound Testing in London

Building Regulations Part E require that builders demonstrate the sound insulation performance of separating walls/floors in new-build dwellings and/or converted dwellings or rooms for residential purposes (as well as those newly formed by a material change of use). This applies when separate dwellings are attached via a common partition not exclusively used by the same occupants. The only way to satisfy the relevant compliance with building regulations is to undertake sound testing in London.

The regulations set minimum performance requirements for sound insulation between spaces, as to provide reasonable conditions for living. Performance can be demonstrated either by sound testing a sample of as-built constructions/properties.

Sound Insulation Testing needs to be carried out between pairs of rooms separated by party walls or floors. In most cases the rooms to be sound tested will be the two main habitable rooms – living rooms and bedrooms. The sound testing procedure involves setting up a noise source in a room on one side of the party wall or floor and measuring the noise on both sides of the partition.

Sound Testing for Part E of Building Regulations has been a mandatory requirement since July 2003. All new build dwellings and conversions which were built after this date require 10% of each party wall/floor construction type to be tested.

There are two mains types of Sound Testing in London that need to be carried out prior to the building handover, they are:

Airborne Sound Testing
Airborne sound tests are usually required between horizontally and vertically separated pairs of rooms. The sound tests are undertaken by using a sound source, amplifier and loudspeaker to generate a high noise level in one room (the source room). Noise measurements are then taken in both the source and receiver rooms using a prescribed number of source and microphone positions. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured.

From the results, the airborne sound insulation (DnT,w + Ctr) is calculated and compared to the requirements of Approved Document E. For new build projects you are required to achieve 45dB for airborne sound testing through walls and floors and 62dB for Impact sound testing for floors. For refurbishment projects this changes to 43dB for airborne and 64dB for impact.

Impact Sound Testing
For vertically separated rooms, an Impact sound test may also be required. This sound test is undertaken using a “tapping machine”, (as above) which drops a series of weights onto the floor of the upper room. The noise level in the lower (receiver) room is measured for a prescribed number of source and microphone locations. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured. From the results, the impact sound insulation (L’nT,w) is calculated and compared to the requirements of Approved Document E.

Sample Sound Tests
If you are undertaking a conversion project, i.e. subdividing a commercial office building into flats, it is important to ascertain the performance of your existing floor and wall partition. In our experience there is often noise travels directly through the separating partition due to lack of mass or isolation; or, it may be coming along another indirect route – called a flanking path. One of the most common flanking paths is the inner leaf of an external cavity wall, especially if it’s been constructed out of a lightweight weight material such as thermalite blockwork.

To offer our clients peace of mind we can visit site before any construction works have taken place and undertake a series of sample sound tests to check the acoustic performance of the existing partitions. This allows our clients to undertake a targeted acoustic design, saving time and money.

Sound Testing of Building Facades
For the sound testing of external facades we place the loudspeaker outside  the  building  at a distance of 5m from the facade with  the  angle  of  sound incidence  equal  to  45° ± 5°  and  such  that  the  real  traffic  noise  impact  is simulated  the  best  possible  way.  The speaker and amplifier are used to generate a steady random noise signal via the loudspeaker source. The sound pressure levels are then measured at 2m in front of the facade plane and 1.5m above the ground.

Contact APT Sound Testing
All APT’s test engineers carry the latest Norsonic sound testing equipment, which are class one rating. All of our sound testing is completed to a strict quality controlled standard. We provide full ISO & UKAS complaint sound testing. If you would like more information in regards to sound testing in London, please contact us on 01525 303905 or visit our website APT Sound Testing Services website.

Improving Acoustics in Dwellings

When designing a new project containing multiple dwellings, why go further than just meeting the basic regulations. For instance, if you only manage to achieve the minimum requirements for compliance with Building Regulations Part E for sound testing, then the chance of noise complaints will usually be higher than if you better it by 5-7dB.  

The World Health Organisation defines noise as ‘unwanted sound’ and such noise in buildings can have significant effects on the people (residents) who occupy them. If a person is subjected to excess noise for long periods, it can result in physical discomfort or mental distress and in many cases noise complaints. The WHO estimates that around 50% of the population of the European Union live in areas are exposed to noise levels that do not ensure acoustic comfort to their inhabitants and more than 30% are exposed to noise levels at night which is at a level disturbing to sleep this is simply not good enough.

Within homes, a noisy neighbour can be one of the main problems experienced in attached housing. It’s estimated that up to 4 million people in Britain have had their lives disturbed by noisy neighbours.

The best way to combat excess noise is to ensure that proper precautions are taken at the design stage of the project and thereafter during construction of the building. Noise transmission levels should be compatible with the building’s usage with the correct acoustic climate provided in each space.

The UK has the building regulations and a number of sector specific guidance documents covering noise, these are:

• Approved Document E
• Building Bulletin 93
• Health Technical Memorandum 08-01
• BS8233
• BS4142

There are strong arguments for considering solutions which go above and beyond just meeting the minimum requirements in the above regulations. For instance using acoustic ceiling products and partition systems it is possible to create environments that offer greater acoustic comfort for occupants go above and beyond the standard Building Regulations requirements, which should have a positive impact on health, well-being and productivity.

Firstly, get advice on acoustic design before starting construction. The most effective way to ensure you improve the acoustics on your project and pass your sound test at the first attempt is to plan your project with sound insulation in mind. This does not need to be costly, and can save considerable time and cost at the end of the project, by reducing the chance of needing to undertake remedial works and re-testing.

Acoustics in Dwellings Explained

The two main areas to take into consideration are usually the dividing wall and floor partitions. If you are unsure of how to build the separating wall and floor partitions and associated junctions across your project don’t panic, we can offer an acoustic design service. The degree of guidance you require can vary from site to site; however, we can cater for every eventuality by offering sample sound testing to establish the sound insulation performance of your existing wall and floors. Thereafter we can undertake more targeted design review using the information at hand.

When your project is underway, we can visit site and check the construction is being constructed as designed. Even minor alterations can have a significant impact on the effectiveness of your sound insulation measures.

If you have a new project and you need help with your acoustic design and/or sound testing then please email us at: info@aptsoundtesting.co.uk  or call us on 01525 303905. If you want more information on our full range of services please visit our website at: www.aptsoundtesting.co.uk

If you would like to download more information on how to prepare for your sound testing, please click download our sound testing checklist.

Quality Thermal Imaging Cameras & Building Surveys

When we undertake thermal imaging surveys, we only use the FLIR P6n thermal imaging cameras, as they are an excellent choice for BREEAM requirements, due to its high resolution, sensitivity, and advanced features. Here are some key specifications that make it suitable for our BREEAM thermal imaging surveys:

High Resolution

The FLIR P6n offers a high resolution of 640 × 480 pixels. This high resolution ensures detailed thermal images, allowing for accurate identification of temperature variations and potential issues in building structures. The higher the resolution the more detail we can provide to clients.

High Thermal Sensitivity (NETD)

The camera has a very thermal sensitivity (Noise Equivalent Temperature Difference, NETD) of less than 0.03°C. This high sensitivity allows the camera to detect even the smallest temperature differences, making it ideal for identifying insulation deficiencies, air leaks, and other subtle thermal anomalies that many other cameras simply miss.

Wide Temperature Range

The FLIR P6n can measure temperatures ranging from -40°C to 650°C. This wide temperature range makes it versatile for various applications, including detecting heat loss, moisture infiltration, and electrical malfunctions.

Wide Field of View (FOV)

The camera features a field of view (FOV) of 25° × 19°. This FOV is suitable for capturing comprehensive thermal images of building envelopes, ensuring thorough inspections during BREEAM thermal imaging surveys. This wide FOV captures more detail within a single image.

Additional Features

One of the most important features of the FLIR P6n is its MSX® image enhancement, which overlays thermal images with visual details for better clarity and context.

Another great feature is the built-in GPS for geotagging images, making it easier to document and reference specific locations during surveys.

These specifications make the FLIR P6n thermal imaging camera a powerful tool for conducting BREEAM thermal imaging surveys, ensuring accurate and reliable results that contribute to the overall sustainability and efficiency of buildings.

Saving money by investing in a thermal imaging survey

Investing in thermal imaging surveys ultimately translates into significant cost savings for businesses. By identifying potential failures before they occur, organisations can undertake preventative maintenance that is far less costly than emergency repairs. For example, the cost of replacing an overheated electrical component after a fire incident far exceeds the cost of conducting routine thermal imaging inspections to catch the issue early. Moreover, improved energy efficiency resulting from identifying HVAC and insulation issues can lead to substantial reductions in utility bills. For large buildings, these savings can accumulate to significant figures over time.

As such, thermal imaging surveys not only enhance safety but also provide a solid return on investment through preventative measures and efficiency improvements. That’s why Thermal Imaging has been embraced by BREEAM and Building Regulation Part L.

Our Premium Thermal Imaging Service for Buildings

• Supply of an ITC trained Level 3 thermographer
• We use large format FLIR P6n-Series (640×480 resolution) thermal imaging cameras.
• Comprehensive report to include Introduction and fault cover pages, summary problem pages, elevation inventory,
• Detailed fault documentation pages with possible root cause and remedial recommendation (isotherm included if using equations), baseline IR and DC image of every elevation (100% coverage-no isotherm)
• Application of thermal indexing formulas
• Eco Friendly Email Report
• Reports provided within 24 hours – contract dependant

Please contact us for more information If you would like to contact us for more information on our thermal imaging services, please contact us on 07775 623464, or email us at info@aptsoundtesting.co.uk.   

We undertake sound testing on all types of residential buildings and commercial buildings. We also undertake sound testing on schools and buildings containing rooms for residential purposes.

Our team of experienced sound test engineers are dedicated to giving our customers the best quality of service and offer acoustic design advice where possible, to help our clients achieve the required acoustic results to pass the sound testing and attain building completion. We can also undertake ‘in house’ UKAS accredited air tightness testing in one seamless package, lowering costs and negating coordination issues.

# About the Author

Darren Helliwell is a building performance specialist with over 25 years of hands-on experience leveraging thermal imaging, blower door testing, and smoke analysis to optimise air tightness in both new-build and refurbishment projects such as Battersea Power Station, Imperial War Museum and Harrods.

Using advanced infrared thermal imaging cameras alongside state-of-the-art blower door and smoke-testing equipment, Darren’s team delivers detailed thermographic surveys across residential and commercial buildings. These thermal imaging surveys pinpoint invisible air leaks, identify insulation defects, and reveal thermal bridging—empowering architects, contractors, and property owners to make targeted, energy-saving improvements.

Darren’s ongoing mission is to help design teams and contractors harness the power of thermal imaging to achieve truly airtight, energy-efficient building envelopes. By reducing heat loss and driving down energy bills, his thermography expertise supports sustainable, cost-effective construction and refurbishment outcomes.

Connect with Darren Helliwell: 

[Thermal Imaging Surveys] Thermal Imaging Surveys | APT Building Thermography Reports 

[APT Email] info@aptsoundtesting.co.uk  

[LinkedIn] https://www.linkedin.com/in/darren-helliwell-78789b26

Introducing Plant Noise Surveys

At APT Sound Testing, we understand the growing importance of plant noise surveys, especially when planning authorities require them to ensure compliance with BS4142 standards. If you’ve been asked to conduct a plant noise survey as part of a planning condition, we’re here to help.

Industrial noise is becoming an increasingly critical factor for planning authorities, particularly as the UK government pushes for the redevelopment of brownfield sites. These areas often see industrial and residential developments in close proximity, leading to concerns about noise levels and their impact on local amenity and quality of life. As a result, noise from industrial operations — such as machinery, plant, and equipment — must be carefully assessed and managed to avoid disrupting nearby communities.

Local authorities often impose restrictions on noise emissions, particularly in areas near residential properties, and achieving compliance with sound pressure level limits is essential. These limits can apply either at the site boundary or at sensitive receptors, such as nearby homes. To meet these conditions, it’s crucial to assess current noise levels, set appropriate guidelines, and monitor compliance with noise limits to ensure that noise doesn’t cause harm to local residents.

Our Plant Noise Survey Services

If you’re planning to introduce a new noise source to your site, we will begin by measuring the existing background noise levels over a 24-hour period. This helps us understand the baseline conditions of the area before assessing the potential impact of your new noise source. If the noise source is already present, we’ll measure the noise levels both with and without the source operating to establish the difference.

BS4142 provides the recognised methodology for assessing industrial noise, particularly in areas with residential housing. This standard involves measuring the existing background noise levels, typically using the LA90 measure (the level exceeded for 90% of the time), at different times of day, if necessary. Our consultants are highly experienced in applying the methods and meeting the requirements set out in BS4142, ensuring that your survey complies with the necessary regulations.

Comprehensive Reporting & Mitigation Recommendations

Our team offers detailed survey reports that clearly outline the findings and provide recommendations for noise mitigation measures where necessary. We use noise mapping techniques to demonstrate the practical effectiveness of these measures in real-world conditions. Our assessments can cover a wide range of industrial operations, including air conditioning systems, extraction units, refrigeration equipment, and general industrial plant operations.

We use the latest Norsonic acoustic equipment to conduct our surveys, ensuring accurate and reliable results. Our commitment to using state-of-the-art technology ensures that your noise survey is fully compliant with BS4142 and meets the expectations of your local authority.

If your local authority has requested that you undertake a BS4142 noise assessment, don’t hesitate to get in touch. We can guide you through the process, providing expert advice and delivering a professional noise survey that helps you achieve compliance. Contact us today at 01525 303905 or email us at info@aptsoundtesting.co.uk for more information.

Let APT Sound Testing help you manage industrial noise and navigate the planning process with ease.

UKAS Accredited Sound Testing Services

At APT Sound Testing, we offer comprehensive UKAS-accredited sound testing services across London and throughout the UK, fully compliant with the stringent standards outlined in Approved Document E of the Building Regulations. Our sound testing solutions cater to a variety of building types, including residential properties, commercial structures, educational institutions, healthcare facilities, and mixed-use buildings designed for both residential and commercial purposes.

Our expert team of sound testing engineers is highly experienced in managing all aspects of acoustic compliance. We understand the critical importance of meeting the required acoustic standards to ensure successful building completion. As part of our services, we offer bespoke acoustic design advice to help clients address noise-related challenges proactively. Our goal is to ensure that all our clients meet the necessary standards for sound insulation and noise reduction, making the testing process smooth and efficient.

Expertise in Sound Testing

At APT Sound Testing, our team brings extensive knowledge and experience to every sound testing project we undertake. We specialize in testing for compliance with the Building Regulations Part E, and our engineers are experts at identifying and addressing potential acoustic issues early in the process. Our services are applicable across a wide range of projects, from new residential developments to complex commercial and mixed-use spaces, educational buildings, and healthcare facilities. We are committed to providing the highest standards of service to all our clients, regardless of project size or complexity.

Sound Testing for Residential Buildings

For residential projects, whether it is a new-build house, apartment complex, or housing development, our sound testing services are crucial in ensuring that the building meets the necessary acoustic performance criteria. We carry out a range of tests, including airborne sound insulation (measuring sound transfer between rooms) and impact sound insulation (measuring sound transfer between floors). Our expert team helps self-builders, developers, and contractors ensure their projects comply with acoustic standards outlined in Approved Document E.

Sound Testing for Commercial Buildings

In commercial spaces, noise control is equally important to ensure a comfortable and productive environment for employees, customers, or tenants. APT Sound Testing is equipped to perform comprehensive sound testing for office buildings, retail spaces, and other commercial environments, ensuring that these spaces meet required acoustic regulations. Whether you are constructing a multi-storey office block or a retail development, our team will work with you to ensure compliance with the relevant regulations.

Acoustic Testing for Educational Facilities

Schools and universities must maintain quiet, controlled environments to support effective learning. Our acoustic testing services help ensure that classrooms, lecture halls, libraries, and study areas provide the necessary acoustics for education. We assess the noise transfer between rooms, particularly in areas where speech intelligibility and concentration are critical.

Healthcare Facilities

For healthcare buildings, including hospitals, clinics, and other medical facilities, our sound testing services are tailored to meet the needs of a sensitive environment. Quiet spaces, free from disruptive noise, are vital to patient care and well-being. Our testing ensures that all rooms, including patient wards, treatment areas, and waiting rooms, meet the required acoustic performance standards.

Mixed-Use Developments

Many urban developments now combine both residential and commercial spaces. For mixed-use developments, acoustic performance becomes a particularly important consideration to ensure that residential areas are not disturbed by the noise from commercial spaces. APT Sound Testing works closely with developers to ensure that these types of spaces meet both residential and commercial sound insulation standards.

Acoustic Consultancy and Design Advice

At APT Sound Testing, we don’t just perform testing, we offer comprehensive acoustic consultancy services designed to help clients navigate the challenges of noise control from the very start of the project. Our team works closely with architects, developers, and contractors during the planning and design stages to assess potential noise-related issues, offering tailored recommendations to ensure successful compliance.

Tailored Acoustic Solutions

Our approach to acoustic consultancy is highly personalized. Every project presents its own unique set of challenges, and our team works to create customized solutions for each client. Whether it’s advice on soundproofing, designing noise barriers, or assessing building materials for their acoustic performance, we provide expert recommendations that help prevent problems before they arise.

Early-stage Collaboration

We work with clients from the outset of a project, providing insights during the initial design phase. By identifying potential acoustic challenges early, we help clients incorporate noise mitigation measures into their designs, making it easier to meet the necessary standards later. This proactive approach ensures that clients avoid costly design changes and delays in the later stages of construction.

UKAS Accreditation

One of the most significant benefits of working with APT Sound Testing is our UKAS (United Kingdom Accreditation Service) accreditation. This accreditation guarantees that our sound testing services meet the highest standards of quality, precision, and reliability. UKAS accreditation means that our testing processes and equipment undergo regular, rigorous checks, ensuring that we provide accurate, trustworthy results every time.

We adhere to the ISO/IEC 17025 standard, which governs the competence of testing and calibration laboratories. This ensures that all our sound testing services are carried out with the utmost professionalism and that our results are recognized by all relevant authorities. As part of our commitment to quality, we use the latest testing equipment, all of which is UKAS calibrated, ensuring the highest level of accuracy in every test.

Integrated Testing Solutions

In addition to our sound testing services, we offer air tightness testing as part of our comprehensive service package. For many clients, combining both sound and air tightness testing helps streamline the process and reduce overall project costs. By offering both services as part of an integrated package, we simplify the testing process and help clients avoid complications that can arise from coordinating multiple testing providers.

Air Tightness Testing

Air tightness testing is an essential part of ensuring that buildings are energy-efficient and comply with Part L of the Building Regulations. The combination of sound and air tightness testing makes it easier for clients to achieve compliance with multiple regulations at once, saving time and money.

Why Choose APT Sound Testing?

Commitment to Quality and Excellence

We are dedicated to providing the highest quality service to our clients. Our team is made up of highly trained professionals who are not only technically skilled but also committed to delivering outstanding customer service. From the moment you contact us, you’ll experience a seamless, professional service designed to meet the specific needs of your project. Our in-house team ensures that every part of the testing process is handled with care and precision.

Client-Centric Approach

At APT Sound Testing, we understand that every project is unique. That’s why we offer a personalized service tailored to your needs. Our team is responsive, reliable, and always available to provide guidance, answer questions, and ensure that you receive the best possible service. Clear communication is at the heart of our client-focused approach, ensuring that you are always informed and confident throughout the testing process.

Proven Track Record

With years of experience in the industry, APT Sound Testing has built a solid reputation for delivering accurate, reliable testing services. Our client base includes a diverse range of sectors, from residential developers and commercial contractors to public sector organizations, including healthcare providers and educational institutions. Our reputation for quality service is reflected in the high rate of return clients we have, many of whom continue to trust us with their projects due to the excellent service we provide.

Our Service Areas

Based in central London, APT Sound Testing offers nationwide coverage, serving clients throughout the UK. Whether you are located in London, the South East, the Midlands, or beyond, we are ready to assist with your sound testing needs. Our flexible service ensures that we can accommodate last-minute requests and weekend work, particularly for high-priority sectors like banking and finance.

Contact APT Sound Testing

APT Sound Testing is your trusted partner for UKAS-accredited sound testing and acoustic consultancy services across London and the UK. Our expertise, commitment to quality, and comprehensive approach to sound and air tightness testing make us the ideal choice for anyone seeking reliable and precise acoustic testing solutions. Whether you are working on a residential development, a commercial project, or a specialized healthcare facility, we have the knowledge and experience to help you meet your acoustic requirements.

For more information or to schedule a consultation, please call us at 01525 303 905 or contact us through our website. We look forward to working with you on your next project and helping you achieve the acoustic performance you need for successful building completion.

# About the Author

Darren Helliwell is a building performance specialist with over 25 years of hands-on experience leveraging thermal imaging, blower door testing, and smoke analysis to optimise air tightness in both new-build and refurbishment projects such as Battersea Power Station, Imperial War Museum and Harrods.

Using advanced infrared thermal imaging cameras alongside state-of-the-art blower door and smoke-testing equipment, Darren’s team delivers detailed thermographic surveys across residential and commercial buildings. These thermal imaging surveys pinpoint invisible air leaks, identify insulation defects, and reveal thermal bridging—empowering architects, contractors, and property owners to make targeted, energy-saving improvements.

Darren’s ongoing mission is to help design teams and contractors harness the power of thermal imaging to achieve truly airtight, energy-efficient building envelopes. By reducing heat loss and driving down energy bills, his thermography expertise supports sustainable, cost-effective construction and refurbishment outcomes.

Connect with Darren Helliwell: 

[Thermal Imaging Surveys] Thermal Imaging Surveys | APT Building Thermography Reports 

[APT Email] info@aptsoundtesting.co.uk  

[LinkedIn] https://www.linkedin.com/in/darren-helliwell-78789b26

Acoustic Consultancy & Testing

At APT Sound Testing, we are leading acoustic consultants providing a complete, turnkey solution for all your acoustic needs. Whether you’re looking to ensure compliance with planning requirements or need to meet Building Regulations Part E for building control sign-off, our team offers expert guidance throughout every stage of your project. We prioritise both compliance and cost-effectiveness, helping you achieve high-quality acoustic performance while staying within budget.

Our expert team conducts thorough on-site sound insulation testing to assess the performance of existing walls and floors in your building. By determining sound levels, we can develop a precise acoustic design tailored to meet Building Regulations Part E requirements. From initial assessments to pre-completion testing, we ensure every aspect of your project adheres to the required acoustic standards.

Our 4-Step Acoustic Design Package

To assist our clients in meeting the requirements of Approved Document E, we offer a structured, four-step acoustic design advice package:

1. Site Survey Visits

We conduct a detailed site survey to assess the existing construction and identify any potential acoustic challenges. This helps us detect problematic materials, such as lightweight blocks, which could impact sound insulation. Additionally, we verify that acoustic materials are being installed correctly in accordance with manufacturer guidelines.

2. Sample Sound Testing

To understand the acoustic performance of your building, we carry out sample sound insulation testing on existing walls and floors. This provides an accurate assessment of the current soundproofing levels, allowing us to offer a targeted acoustic design strategy tailored to your construction.

3. Acoustic Design Review

Our specialists perform a comprehensive review of the proposed party walls and floors, ensuring the acoustic design aligns with compliance standards. We evaluate key construction elements, including mass, isolation, and absorption, to develop an optimized acoustic solution that meets or exceeds regulatory requirements.

4. Pre-Completion Sound Testing

Before your project is completed, we conduct final sound insulation testing to ensure compliance with Approved Document E. This critical step confirms that your development meets the necessary soundproofing criteria and secures building control sign-off. If your local authority has requested sound insulation testing, contact us today.

Part E Sound Insulation Testing

Since July 2003, pre-completion sound testing under Part E of Building Regulations has been a mandatory requirement for all new builds and conversions. Under these regulations, 10% of each party wall and floor construction type must be tested to ensure compliance.

Sound insulation testing is designed to verify that residential buildings provide adequate noise attenuation. Building Regulations Part E requires two distinct types of sound testing:

• Airborne Noise Testing – Measures sound transmission through the air, such as conversations, television noise, or music.
• Impact Noise Testing – Assesses noise generated by direct impacts on floors, such as footsteps or furniture movement.

By conducting both types of testing, we ensure that the property offers reasonable resistance to sound transmission, creating a comfortable and compliant living environment for future occupants.

Why Choose APT Sound Testing?

We are a UKAS-accredited sound insulation testing laboratory, committed to delivering reliable and efficient acoustic testing services. Our extensive experience in acoustic design allows us to provide valuable insights and practical solutions from the early design stages to final pre-completion testing.

Benefits of Working with Us:

• Expert acoustic consultancy tailored to your project needs
• UKAS-accredited sound insulation testing services
• Comprehensive support from design to completion
• Fast and accurate reporting to achieve building control sign-off
• Cost-effective solutions that optimize construction performance

If you need sound insulation testing to meet local authority requirements, get in touch with our team today at 01525 303905 or email info@aptsoundtesting.co.uk. We are here to ensure your project meets the highest acoustic standards with a seamless and professional approach.

Sound Testing for Dwellings: Ensuring Compliance

Since July 2003, pre-completion sound testing has been a mandatory requirement under Part E of the Building Regulations. As a UKAS-accredited sound insulation testing laboratory, we offer a proactive and reliable sound testing service to help our clients achieve building control sign-off with ease.

If you’re involved in the construction or renovation of dwellings, it’s crucial to understand the importance of sound testing. Here’s what you need to know about the process and why it’s essential for your project.

What is Sound Testing for Dwellings?

A common question we receive from clients is: “What exactly is sound testing?” In simple terms, sound insulation testing assesses whether a building meets the required acoustic standards. It is a necessary process for new builds and conversions, ensuring compliance with building regulations.

To ensure accurate results, sound testing must be carried out by a qualified professional with third-party accreditation, such as a UKAS-accredited sound testing company. This guarantees that the testing process adheres to strict quality standards and provides reliable results for regulatory compliance.

Types of Sound Testing

There are two primary types of sound insulation testing:

1. Airborne Sound Insulation Testing

Airborne sound refers to noise that travels through the air and penetrates separating structures between rooms. In the case of a lightweight floor, airborne sound could pass through elements such as the plasterboard ceiling, the floor void, and the floorboards, ultimately reaching the adjacent room.

2. Impact Sound Insulation Testing

Impact sound measures the noise level in a room when a direct impact is made on the floor above. This test is particularly important in multi-story buildings, where sound transmission between floors needs to be minimized to ensure comfortable living conditions for occupants.

Regulatory Requirements and Compliance

The specific acoustic performance standards for new builds and conversions are outlined in Approved Document E: Resistance to the Passage of Sound. These regulations set the minimum requirements for sound insulation, ensuring that buildings provide adequate protection against noise transmission.

For refurbishments, the standards are slightly more lenient than for new constructions, as it is generally more challenging to retrofit effective soundproofing solutions into existing structures. However, compliance is still required to meet building control approval.

When is Sound Testing Required?

All new-build properties and conversions completed after July 2003 must undergo sound testing. A minimum of 10% of each party wall and floor construction type must be tested to ensure compliance with regulations. Testing is conducted between pairs of rooms that are separated by party walls or floors, helping to verify that noise levels remain within acceptable limits.

Why Choose APT Sound Testing?

At APT Sound Testing, we bring years of acoustic design experience to every project, ensuring a seamless process from initial design consultation to final pre-completion testing. Our team of expert acoustic engineers provides:

• Comprehensive Sound Testing Services – Covering both airborne and impact sound insulation testing.
• UKAS-Accredited Testing – Ensuring compliance with regulatory standards.
• Fast and Reliable Service – With site visits typically available within one week.
• Expert Acoustic Design Advice – Helping you implement effective soundproofing solutions.
• Competitive Pricing – Offering cost-effective sound testing without compromising on quality.

Our goal is to make sound insulation testing as straightforward as possible for our clients. Whether you’re a builder, architect, or developer, we’ll guide you through the process to ensure full compliance with Building Regulations.

Book Your Sound Test Today

Don’t let sound insulation testing be an afterthought — ensure compliance early to avoid delays in your project completion. Contact APT Sound Testing today to schedule a sound test or to learn more about our additional services, including acoustic design detailing.

📧 Email: info@aptsoundtesting.co.uk
📞 Call: 01525 303 905 or 07775 623464

We look forward to working with you and helping you achieve a successful building control sign-off!

APT Sound Testing & Acoustic Design Services

At APT Sound Testing, we pride ourselves on offering a friendly, proactive, and expert service in sound testing, acoustic design, and compliance certification. Our team of experienced sound test engineers is dedicated to ensuring our clients achieve the necessary acoustic results to pass sound testing and attain building completion. With our in-depth knowledge and commitment to quality, we provide tailored acoustic design advice and UKAS-accredited services, ensuring seamless compliance with all regulatory requirements.

Comprehensive Sound Testing Services

We conduct sound testing for a wide range of buildings, including residential and commercial properties, schools, and other facilities containing rooms for residential purposes. Our UKAS-accredited sound testing services cover London and the entire UK, ensuring compliance with Approved Document E of the Building Regulations.

By choosing APT Sound Testing, you gain access to a team that understands the intricacies of acoustic performance. Our expertise ensures that buildings meet the required standards, reducing the risk of costly delays in the construction and certification process.

Why Choose APT for Your Thermal Imaging Survey?

Our thermal imaging services stand out due to our extensive experience and technical expertise. We have been at the forefront of infrared inspections for years, serving the engineering, construction, maintenance, and management industries across the UK. Our professional thermographers are qualified in accordance with BS EN 13187, surpassing the requirements of BREEAM. Whether it’s detecting thermal bridging, identifying insulation defects, or ensuring airtightness, our advanced imaging techniques provide invaluable insights for your project.

Smoke Shaft Testing for Multi-Storey Developments

Automatic Opening Ventilation (AOV) systems play a crucial role in fire safety for high-rise buildings. Ensuring that smoke shafts are sufficiently airtight is vital for the effective transport of clean air and smoke extraction. Our smoke shaft testing service helps to confirm compliance with national air permeability standards, reducing the risk of smoke inhalation and enhancing occupant safety. By verifying that these systems function correctly, we contribute to the overall fire strategy of multi-storey developments.

Premium Last-Minute Thermal Imaging Service

Building maintenance and diagnostics often require quick and precise action. Our premium last-minute thermal imaging service is designed for urgent situations where immediate analysis is needed. Whether it’s detecting roof leaks, identifying electrical faults, or ensuring the integrity of the building envelope, our Level 3 thermographers use state-of-the-art FLIR thermal imaging cameras to deliver accurate and reliable results. When time is of the essence, APT Sound Testing provides the highest level of professionalism and efficiency.

Experienced Sound Testing Engineers

Our sound testing engineers are not only highly qualified but also dedicated to delivering the best service possible. We provide expert acoustic design advice to help clients meet regulatory requirements and successfully pass sound testing. Additionally, we offer UKAS-accredited air tightness testing as part of a comprehensive package, reducing costs and simplifying coordination.

Who We Work With

APT Sound Testing has years of experience working with a diverse range of clients across both the public and private sectors. From self-builders to major housing developers, as well as health authorities and financial institutions requiring cleanroom testing, we cater to a wide spectrum of needs. Our commitment to excellence has resulted in one of the highest client retention rates in the UK’s pre-completion testing and consultancy sector.

We take pride in our ability to provide a unique, proactive service. Unlike many other companies, we do not subcontract our work—all testing and consultancy services are carried out in-house. This ensures consistent quality and accountability across all our projects.

Convenient & Responsive Service

With an office located in central London, we are strategically positioned to respond quickly and efficiently to client requests. Our resources allow us to accommodate last-minute testing and weekend work, which is particularly valuable for clients in the banking sector and other industries with tight schedules.

Our highly trained engineers prioritize customer satisfaction, ensuring a quick and efficient service. By leveraging years of acoustic design experience, we have built an extensive knowledge base that enables us to understand and meet the specific requirements of each project. As a multi-UKAS accredited laboratory working to strict ISO standards, we guarantee a high-quality service from initial consultation to project completion.

Our Commitment to Quality & Practical Solutions

At APT Sound Testing, we listen carefully to our clients’ needs and provide practical, cost-effective solutions tailored to their projects. Our approach considers buildability and compliance in a holistic manner, offering a seamless acoustic consultancy service that includes both acoustic design and pre-completion testing.

We invest heavily in state-of-the-art acoustic testing and survey equipment, all of which is UKAS-calibrated to the highest standards. By continually enhancing our personnel and technology, we can offer an efficient and accurate service that meets and exceeds industry expectations.

Contact APT Sound Testing Today

APT Sound Testing is dedicated to providing top-tier acoustic design, sound testing, and compliance solutions. Our team is always ready to assist with your project, offering expert advice and reliable service to ensure your building meets the required standards.

Get in touch with us today to discuss your latest project. Call us at 01525 303 905 or visit our website to learn more about our comprehensive services.

Why you should use APT for your BREEAM Thermal Imaging Survey

There are many reasons why you should use APT for your thermal imaging survey for BREEAM. For a start our engineers are Level 3 thermographers for BREEAM (Building Research Establishment Environmental Assessment Method) thermal surveys, which mean they are highly recommended for several reasons:

1. Advanced Training, Expertise and Certification: Level 3 thermographers have advanced training and certification, ensuring they possess the necessary skills to conduct thorough and accurate thermal inspections. They can troubleshoot, calibrate equipment, interpret data, and create detailed reports.
2. Inspection Quality and Consistency: Highly qualified thermographers produce higher quality and more technically consistent inspections. They can develop inspection procedures, severity criteria, and interpret relevant codes.
3. Comprehensive Analysis of Building fabrics: Level 3 thermographers can provide quantitative data, utilising accurate temperature measurements to assess the severity of exceptions. They consider factors such as the load on the building envelope, equipment type, and changes in ambient conditions.
4. Problem Identification on Building Envelopes: They can identify problems that may not present as obvious exceptions, ensuring a more comprehensive assessment of the thermal performance of the building’s envelope.
5. Compliance and Standards for BREEAM: Level 3 thermographers ensure that the thermographic inspections comply with all necessary standards and current regulations, contributing to the overall BREEAM certification process.

By using a Level 3 thermographer, you can be confident in the accuracy and reliability of the thermal survey to your building fabric, ultimately supporting the building’s energy efficiency and sustainability goals.

We only use the highest quality thermal cameras

We only use high-resolution, high-sensitivity professional thermal imaging cameras for several reasons:

1. Enhanced Image Clarity during surveys: High-resolution cameras (640 x 480) provide detailed thermal images, making it easier to identify small temperature differences and detect potential issues.

2. Improved Detection Accuracy: High sensitivity, measured as Noise Equivalent Temperature Difference (NETD), allows the camera to detect even the smallest temperature changes. This is essential for accurate thermal analysis.
3. Versatility in Applications: High-resolution and high-sensitivity cameras are versatile and can be used in various applications, including building envelope inspections, damp inspections and electrical inspections.
4. Better Performance in Adverse Conditions: These cameras perform well in challenging weather conditions, providing reliable thermal imaging even in low visibility situations etc. where lower quality camera may not work, which in turn reduces the chances of aborted visits.
5. Efficient Resource Management: By accurately detecting temperature changes, these cameras help in efficient resource management, identifying potential problems quickly and effectively.

The minimum requirements for BREEAM Thermal Imaging Inspections

For BREEAM (Building Research Establishment Environmental Assessment Method) thermal imaging surveys, there are specific requirements to ensure accuracy and compliance:

1. Thermographers Certification: The thermographic survey must be conducted by a certified inspector. A minimum of Level 2/Category 2 certification in accordance with ISO 18436-7 is required, although Level 3 is often preferred where possible.
2. Temperature Difference: There must be a minimum temperature difference of 10ºC between the inside and outside of the building to effectively detect heat loss or gain across the building fabric.
3. Standards Compliance: The survey must comply with the requirements set out in BS EN 13187, which satisfies the BRE SD5076 standard for BREEAM credit.
4. Thermal Imaging Equipment: The thermal imaging camera used should be of high resolution and sensitivity to accurately identify thermal anomalies and ensure the integrity of the building fabric.

These specifications help ensure that the thermal imaging survey provides reliable and accurate results to archive compliance, as well as contributing to the overall BREEAM certification of the building.

Our Premium Thermal Imaging Service for BREEAM

Our premium thermographic inspection service even surpasses the requirements of BREEAM, here’s why:

• Supply of an ITC trained Level 3 thermographer
• We use large format FLIR P6n-Series (640×480 resolution) thermal imaging cameras.
• Comprehensive report to include Introduction and fault cover pages, summary problem pages, elevation inventory,
• Detailed fault documentation pages with possible root cause and remedial recommendation (isotherm included if using equations), baseline IR and DC image of every elevation (100% coverage-no isotherm)
• Application of thermal indexing formulas
• Bespoke thermal imaging software
• Eco Friendly Email Report

Please contact us for more information

If you would like to contact us for more information on our thermal imaging services, please contact us on 07775623464, or email us at info@aptsoundtesting.co.uk. 

Optimal Environmental Conditions for Conducting Thermal Imaging on Building Envelopes

Thermal imaging (infrared surveys) has become an essential tool for assessing the condition of building envelopes. However, to consistently achieve accurate and reliable results, it’s crucial to conduct thermal imaging under the correct environmental conditions. In this article, we’ll explore the best conditions for APTs thermal imaging surveys, and how they contribute to effective building envelope assessments for BREEAM and/or building control signoff.

Understanding Thermal Imaging for Building Envelopes

When we undertake a Thermal imaging, or infrared thermography on your building, it involves capturing and analysing the infrared radiation emitted by the materials within the building envelope. When applied to building envelopes, thermal imaging can reveal temperature variations and anomalies that may indicate issues such as insulation deficiencies, air leaks, and moisture intrusion. To ensure these observations are precise, certain environmental factors must be considered and accounted for, they are:

Temperature Differences between internal and external

A significant temperature difference between the interior and exterior of the building is key to effective thermal imaging. This temperature gradient helps highlight thermal anomalies more clearly. For most accurate results, a temperature difference of at least 10°C (18°F) is recommended. Conducting thermal imaging during the early morning or late evening, when outdoor temperatures are cooler and there is less solar loading, can create the necessary contrast.

Weather Conditions on the day of the survey

Clear weather conditions are ideal for thermal imaging on the day of the survey. Avoid conducting thermal inspections during rain, snow, or heavy wind, as these conditions can affect the accuracy of the readings. Moisture from rain or snow can mask thermal patterns, while strong winds can cause rapid temperature changes that lead to inaccurate results.

Solar Radiation

For better accuracy, solar loading must be minimised whenever possible. Direct sunlight can heat building surfaces unevenly, creating false thermal patterns. It’s best to perform thermal imaging either early in the morning or late in the evening, when the sun’s impact is minimal. Alternatively, cloudy days can also provide suitable conditions, as cloud cover diffuses solar radiation and reduces its impact on the building envelope and provides better thermal images.

Surface Moisture on building envelopes

Wherever possible, ensure that the building surfaces (roof, walls and floor) are dry before conducting thermal imaging. Moisture on the surface of the building can absorb and emit infrared radiation differently, leading to misleading results. After rainfall, it’s advisable to wait until the surfaces have dried completely before performing thermal inspections.

Humidity Levels

Moderate humidity levels are preferable for thermal imaging. Extremely high humidity can cause condensation on building surfaces, affecting thermal readings. Conversely, very low humidity can lead to rapid temperature changes that may impact the accuracy of the results. Aim for humidity levels between 30% and 60% for optimal conditions for the best results.

Wind Speed

Low wind conditions are ideal for thermal imaging. Strong winds can cause rapid cooling or heating of building surfaces, making it difficult to obtain accurate temperature readings. Conduct thermal inspections during periods of calm or light winds to ensure stable and consistent thermal patterns and better accuracy.

Conclusion

Conducting thermal imaging on building envelopes under the right environmental conditions is essential for obtaining accurate and reliable results. By considering factors such as temperature differences, weather conditions, solar radiation, surface moisture, humidity levels, and wind speed, property owners and inspectors can effectively identify and address issues within building envelopes. By optimizing these conditions, thermal imaging can provide valuable insights into the health and efficiency of buildings.

Why use us for your Thermal Imaging Surveys

We have many years’ experience in all aspects of thermal imaging to all types of commercial buildings. All our thermographic surveys are conducted by engineers qualified in accordance with BS EN 13187 and are trained to 3.

We only use the highest quality thermal imaging cameras, our thermal imaging equipment is some the best and most accurate on the market, ensuring we pick up faults that other equipment may miss.

Here is a quick breakdown of our service:

Thermal Imaging Service

• Supply of an ITC trained Level 3 thermographer
• We use large format/high sensitivity FLIR P6n-Series (640×480 resolution) thermal imaging cameras.
• Comprehensive report to include Introduction and fault cover pages, summary problem pages, elevation inventory,
• Detailed fault documentation pages with possible root cause and remedial recommendation (isotherm included if using equations), baseline IR and DC image of every elevation (100% coverage-no isotherm)
• Application of thermal indexing formulas
• Eco Friendly Email Report

Please contact us for more information

If you would like to contact us for more information on our thermal imaging services, please contact us on 01525 303905 or email us at info@aptsoundtesting.co.uk