Planning Noise Surveys: What You Need to Know

At APT Sound Testing, we specialise in carrying out planning noise surveys that support planning applications across a wide range of developments. With extensive experience in BS8233 Noise Assessments for residential projects and BS4142 Industrial Noise Surveys for commercial and industrial schemes, we help clients meet planning requirements while ensuring effective noise control solutions.

Below, we’ve broken down the two most common types of surveys requested by local authorities.

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BS8233 Noise Surveys for Residential Developments

When applying for planning permission on new apartments, houses, or hotels, a BS8233 Noise Survey is often required. Local authorities want to understand how new developments will be affected by, or contribute to, existing noise sources, such as:

• Transport (roads, rail, air traffic)
• Entertainment venues
• Industrial activity

We’ve completed hundreds of successful BS8233 surveys, supporting planning consultants, architects, developers, and private clients. Our goal is to deliver cost-effective and practical acoustic solutions at the design stage, whether it’s a single dwelling or a large apartment block.

Why it matters:

• Ensures developments meet the National Planning Policy Framework (NPPF) requirements.
• Protects future residents by providing good internal acoustic conditions (through proper building design) and external sound control (such as acoustic fencing for gardens).

👉 If your local authority has requested a BS8233 Noise Survey, call us on 01525 303905 or email info@aptsoundtesting.co.uk.

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BS4142 Noise Surveys for Industrial & Commercial Developments

Noise from industrial sites is a growing concern for planning authorities, especially where residential and industrial areas meet. If you’ve received a planning condition requiring a BS4142 Plant Noise Survey, we can help.

Typical scenarios include:

• Industrial plants near housing developments
• Brownfield site redevelopments
• Machinery, air conditioning units, refrigeration systems, or extraction fans

How it works:

• We measure existing noise levels in the area (often over 24 hours).
• We then predict or measure the additional impact of your proposed noise source.
• Using the BS4142 assessment method, we establish whether the noise will affect local residents’ quality of life.

Our consultants provide:

• Detailed survey reports
• Noise mapping to demonstrate mitigation effectiveness
• Practical recommendations for reducing noise impact

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Why Choose APT Sound Testing?

We provide more than just surveys, we deliver end-to-end acoustic solutions. Our services cover:

• Residential, commercial, and educational buildings
• Pre-completion sound testing and certification
• Acoustic design advice at every stage of development
• UKAS-accredited air tightness testing, available as part of a combined package to save time and costs

Our team is highly experienced, friendly, and proactive, helping you meet planning conditions smoothly and efficiently.

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📞 Get in Touch
Need a BS8233 or BS4142 Noise Survey for your project? Contact us today on 01525 303905 or email info@aptsoundtesting.co.uk.

Acoustic Consultancy – Your Complete Solution

At APT Sound Testing, we provide a full turnkey acoustic consultancy service to help you meet planning requirements and Building Regulations Part E — ensuring your project passes building control for its acoustic elements, without unnecessary cost or delays.

From initial site surveys through to final pre-completion testing, we work with you at every stage to deliver effective sound insulation solutions. Whether you’re developing new builds or conversions, our UKAS-accredited team has the expertise to help you achieve compliance the first time.

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Our 4-Step Acoustic Design Advice Package

We’ve developed a streamlined process to help clients meet Approved Document E requirements with confidence:

1. Site Survey Visits

We inspect your site’s construction to identify potential problem areas — for example, the use of lightweight blocks or incorrectly installed acoustic materials. This proactive approach helps avoid costly issues later.

2. Sample Sound Testing

Testing your existing walls and floors gives us an accurate picture of their sound insulation performance. Using this data, we can create a targeted acoustic design tailored to your project.

3. Acoustic Design Review

We assess the mass, isolation, and absorption qualities of your construction and provide recommendations to optimise acoustic performance.

4. Pre-Completion Sound Testing

We conduct final sound insulation tests — both airborne and impact — to prove compliance with Building Regulations Part E and secure building control sign-off.

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Part E Sound Insulation Testing

Since July 2003, all new builds and conversions have been required to test 10% of each party wall and floor construction type. Our testing covers:

• Airborne Noise – sound travelling through the air, like TV noise or conversation.
• Impact Noise – sound generated by direct contact, like footsteps or dropped objects.

Our UKAS-accredited team uses state-of-the-art Norsonic equipment to deliver accurate, reliable results and detailed reports for building control.

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Acoustic Design Services

We’ve designed and tested acoustic partitions for everything from semi-detached houses to large apartment developments. Drawing on thousands of completed sound insulation tests, we know what works — and what doesn’t — for every construction type.

By combining design expertise with accredited testing, we provide a complete, compliant, and cost-conscious solution. Our services help reduce the risk of sound test failures caused by poor workmanship or non-compliant materials.

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Sample Sound Testing

Early-stage testing is one of the best ways to avoid surprises at the end of your build. By checking the installation of acoustic materials and testing performance before completion, we can highlight — and help fix — any potential compliance issues before they become costly problems.

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📞 Get in Touch
If your local authority has requested sound insulation testing, or if you want to ensure your project is on the right track, contact us today:

Phone: 01525 303905
Email: info@aptsoundtesting.co.uk

We’ll guide you from design to certification, ensuring your build meets all Part E acoustic requirements smoothly and efficiently.

APT Sound Testing~ UKAS Accredited Services

At APT Sound Testing, we specialise in delivering UKAS-accredited sound and air testing services across London and the UK. Whether you’re constructing a single dwelling, a block of flats, or a mixed-use commercial property, our team of expert engineers is here to help ensure your development complies with Approved Document E (Sound Testing) and Approved Document L (Air Tightness Testing) of the Building Regulations.

With one point of contact for both sound and air tests, we streamline the process, reduce your costs, and help avoid project delays by offering a complete testing solution from start to finish.

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Sound Insulation Testing – Why It’s Required

Sound insulation testing is a legal requirement for all new residential buildings and conversions to demonstrate acceptable noise control between separating walls and floors. The goal is to protect occupants from unwanted airborne and impact noise and to ensure a high quality of living.

What Is Airborne & Impact Sound Testing?

Approved Document E requires two types of sound tests:

• Airborne Sound Testing – Measures the level of sound transmission through walls and floors (e.g. voices, music, TV).
• Impact Sound Testing – Measures noise generated by physical impacts on floors (e.g. footsteps, moving furniture).

By conducting both tests, we assess whether the construction provides a reasonable resistance to sound transfer and complies with the required acoustic performance standards.

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How Many Sound Tests Will My Project Require?

The number of sound insulation tests required depends on:

• The size of the development
• The number of dwellings
• The types of separating wall and floor constructions used

As a general guide:

• Small to medium developments (up to 10 similar units) typically require a single “6-pack” of tests, including:
  • 2 airborne wall tests
  • 2 airborne floor tests
  • 2 impact floor tests
• Semi-detached houses may only require 2 wall tests

Testing is usually carried out in the two main habitable rooms, typically the living room and bedroom, on each side of the separating element.

Our engineers will provide a custom test schedule for your site to ensure full compliance with Building Regulations.

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What Are the Required Sound Test Performance Levels?

To pass, your development must achieve the following minimum acoustic performance levels:

For New Builds:

• Airborne Sound Insulation (walls and floors): ≥ 45 dB DnT,w + Ctr
• Impact Sound Insulation (floors): ≤ 62 dB LnT,w

For Conversions:

• Airborne Sound Insulation (walls and floors): ≥ 43 dB DnT,w + Ctr
• Impact Sound Insulation (floors): ≤ 64 dB LnT,w

If you’re unsure whether your construction details will meet these targets, we also offer pre-completion acoustic design advice to help you pass on the first attempt.

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What Is Air Tightness Testing?

Air tightness testing (or air leakage testing) measures the amount of air escaping through unintended gaps or cracks in the building envelope. It’s a key part of ensuring energy efficiency, reducing heat loss, and lowering CO₂ emissions.

Why Air Tightness Matters

Buildings with poor air tightness can lose up to 50% of their heat, even if fitted with high-spec boilers or insulation. This means:

• Higher energy bills
• Overloaded heating and ventilation systems
• Difficulty meeting energy performance standards
• Potential delays in project sign-off

That’s why achieving a low air permeability rate is essential – not only for compliance but also for long-term building performance.

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Is Air Tightness Testing a Legal Requirement?

Yes. In the UK, air tightness testing is mandatory under Part L of the Building Regulations:

• Part L1A – New domestic dwellings
• Part L2A – New non-domestic/commercial buildings

You’ll need to demonstrate that your building meets the air permeability target specified in your SAP or SBEM report, usually measured in m³/hr/m² at 50 Pascals.

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How Many Air Tests Will I Need?

The number of tests required is determined by the ATTMA Technical Standards:

• For residential dwellings (TS1): Test 3 of each dwelling type or 50%, whichever is fewer
• For commercial buildings (TS2): Test representative samples based on size and type

However, if you don’t test enough units, a 2 m³/hr/m² penalty may be applied across all untested plots. For example, if your SAP design rate is 5 m³/hr/m², you’ll have to meet 3 m³/hr/m² on-site – which can be significantly more difficult.

To avoid penalties, many clients choose to test all units. We can help determine the most cost-effective strategy for your development.

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UKAS-Accredited Testing – Why It Matters

The United Kingdom Accreditation Service (UKAS) ensures that testing bodies meet internationally recognised standards of competence and consistency.

At APT Sound Testing, both our sound and air testing services are UKAS accredited, giving you complete confidence that:

• Our results are accurate and reliable
• Reports are accepted by Building Control without challenge
• Your project remains on schedule and within budget

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Sectors We Work In

We provide expert testing services for:

• Residential new builds and conversions
• Apartments and mixed-use developments
• Commercial offices and retail spaces
• Schools and educational facilities
• Care homes, hotels, and buildings with rooms for residential purposes

Whether you need testing for one plot or an entire estate, we can scale our services to match your project needs.

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Why Choose APT Sound Testing?

✅ UKAS-accredited for both air and sound testing
✅ Nationwide coverage across London and the UK
✅ Fast turnaround with same-day certificates available
✅ Expert acoustic advice to help you pass first time
✅ One contractor for both sound and air testing – saving time and money
✅ Friendly, experienced team of engineers ready to support your project

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Get in Touch Today

Whether you’re planning your next development or approaching completion, APT Sound Testing is here to help with reliable testing and clear guidance every step of the way.

📞 Call us today on 01525 303905
📧 Or use the contact form to speak with one of our acoustic and air testing consultants

Let’s ensure your project meets all sound and air compliance standards – smoothly, efficiently, and without delay.

Thermal Imaging Surveys: Accurate & Professional

When building issues strike without warning, like hidden roof leaks, insulation failures, or electrical faults, there’s no time to waste. You need immediate answers, and you need them to be accurate. That’s exactly what our Premium Last-Minute Thermal Imaging Service delivers.

Whether you’re dealing with urgent faults or just want to stay one step ahead with preventative maintenance, our high-precision infrared surveys are conducted by Level 3 thermographers using cutting-edge FLIR thermal imaging cameras. This elite combination guarantees fast, expert diagnostics with unmatched reliability.

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What is a Thermographic Survey?

A thermographic survey, also known as thermal imaging, uses infrared technology to detect temperature variations on a building’s surface. This allows our experts to identify hidden problems such as:

• Heat loss due to missing or damaged insulation
• Moisture ingress
• Electrical faults
• Structural issues invisible to the naked eye

This method is not only cost-effective but also non-invasive, meaning there’s no need for risky work at height or intrusive inspections. It’s a safer, faster, and smarter way to protect your building.

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Why Level 3 Thermographers Matter

Our thermal imaging team is comprised of Level 3 certified thermographers, the highest qualification in the field. This certification reflects advanced training in thermography, complex diagnostics, and in-depth data interpretation.

These professionals don’t just take pictures, they solve problems. They can:

• Provide expert analysis of critical faults
• Offer clear, actionable remediation guidance
• Conduct long-term trend analysis for recurring issues
• Deliver high-level insights across electrical, structural, and thermal systems

In short, you’re not just getting a survey, you’re getting a strategic asset in your building maintenance toolkit.

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The FLIR Advantage: Top-Tier Thermal Imaging Technology

We exclusively use FLIR thermal imaging cameras, widely recognized as the gold standard in infrared technology. These state-of-the-art devices offer:

• High-resolution imaging to detect even the smallest temperature differences
• Radiometric data capture for precise measurement
• Advanced features like image enhancement and wireless reporting

This ensures every thermal image we take provides maximum clarity and actionable insights—no guesswork, just facts.

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The Benefits of Last-Minute Infrared Surveys

✅ Rapid Problem Identification

In an emergency, speed is everything. Our last-minute service delivers fast diagnostics so you can take immediate corrective action.

💷 Save on Repair Costs

By spotting issues early, we help prevent costly repairs and avoid downtime, saving you money in the long run.

⚡ Improve Safety

Thermal imaging reveals dangerous faults like overheating electrical components, helping you mitigate risks before they become hazards.

🌱 Boost Energy Efficiency

Detect and resolve insulation gaps or thermal bridging to improve your building’s energy performance and lower utility costs.

📝 Professional Reports

All surveys include a detailed, easy-to-understand report with annotated thermal images and clear recommendations, ideal for facilities management and insurance documentation.

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Why Choose Us?

Not all thermal imaging providers offer the same level of service. Here’s what sets the APT Sound Testing premium offering apart:

• Expertise – All surveys are carried out by seasoned Level 3 thermographers.
• Technology – We use only the best-in-class FLIR cameras for optimal results.
• Responsiveness – We specialise in urgent, last-minute surveys without compromising on quality.
• Customer-Focused – We understand that emergencies can’t wait, so we move quickly and professionally to support your needs.

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Book Your Last-Minute Thermal Imaging Survey Today

Whether you’re facing an unexpected issue or need a comprehensive building check-up, our Premium Last-Minute Thermal Imaging Service gives you the confidence and clarity to take action.

📞 Call APT Sound Testing on 01525 303905 / 07775 623464
📧 Email us at info@airpressuretesting.net

Let us help you safeguard your building, one thermal image at a time.

A Thermographic Survey Could Transform Your Property

Every home or building leaks energy, it’s just a matter of how much. In the UK, where energy prices continue to rise and the push toward net zero targets intensifies, understanding where your property is losing heat is more critical than ever. That’s where a thermographic survey, also known as a thermal imaging survey, comes in.

This advanced, non-invasive technique can uncover the hidden issues costing you money and comfort every single year, without tearing open walls or ceilings. Whether you’re a homeowner, landlord, developer, or business owner, a professional thermographic survey could be the key to unlocking your building’s full energy-saving potential.

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What Is a Thermographic Survey?

A thermographic survey uses infrared cameras to detect and visualise heat patterns within a building. The resulting images, known as thermograms, make invisible problems instantly visible: areas where heat escapes, insulation is missing or poorly installed, air is leaking, or damp spots are forming.

This technology works by measuring temperature variations on surfaces and translating them into colour-coded images. Hot areas show up in warmer colours (like red or yellow), while colder areas appear in shades of blue or purple. The beauty of this method? It allows for fast, accurate assessment with no damage or disruption to your property.

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Why Thermographic Surveys Matter in the UK

The UK housing stock is among the least energy-efficient in Europe. It’s estimated that around 26% of the country’s total energy consumption comes from domestic buildings, with 80% of that going directly into heating and hot water.

Despite this massive energy use, many homes continue to suffer from:

• Poor insulation
• Draughty windows and doors
• Leaky roofs and walls
• Unnoticed construction flaws

Even new-builds or recently renovated properties can fall short due to hidden gaps in workmanship or insulation installation. A thermal imaging survey is one of the fastest, most accurate ways to pinpoint these issues and create a roadmap for improvement.

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Top Benefits of a Professional Thermographic Survey

Investing in a thermographic survey is about more than just diagnostics, it’s about actionable improvements that pay off. Here’s what you stand to gain:

1. Lower Energy Bills

By identifying and fixing draughts, thermal bridges, or insulation gaps, you reduce the amount of heat your building loses, cutting heating costs significantly.

2. Increased Comfort

No one likes cold spots, chilly corners, or rooms that never quite feel warm enough. Thermal imaging helps you eliminate these uneven temperature zones for a cosier, more comfortable indoor environment.

3. Early Damp and Mould Detection

Cold areas are prone to condensation, which can lead to mould and long-term structural issues. Thermographic surveys catch these problems before they become visible, protecting your health and your home.

4. Insulation Validation

Whether you’ve just installed new insulation or want to check the effectiveness of older material, a thermal imaging survey verifies whether it’s doing its job, saving you from wasted investments.

5. Sustainability and Compliance

From BREEAM standards to future government mandates on energy efficiency, thermal imaging helps you stay compliant and demonstrate climate responsibility. It also adds value when selling or renting your property.

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What to Expect During a Thermographic Survey

If you’ve never booked one before, here’s how the process typically works:

✅ Tailored Consultation

We begin with a brief discussion about your property type, energy concerns, and goals. This helps us customise the survey to your specific needs.

✅ Best Timing

Thermal surveys are most effective in colder months or during times with a strong indoor-outdoor temperature difference—early morning or evening is ideal.

✅ Comprehensive Assessment

Our certified thermographers will scan both interior and exterior surfaces, using high-resolution infrared cameras to identify problem areas across walls, roofs, doors, windows, and floors.

✅ Professional Reporting

Within a few days, you’ll receive a detailed, illustrated report showing exactly where your property is losing energy, complete with explanations and recommendations for improvement.

✅ Expert Advice

Our team will walk you through the findings and help prioritise the most cost-effective and impactful upgrades.

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Who Should Consider a Thermal Imaging Survey?

A thermographic survey is suitable for a wide range of properties and owners, including:

• Homeowners looking to reduce bills and enjoy a warmer home
• Landlords and property managers aiming to boost EPC ratings and tenant comfort
• Buyers wanting peace of mind before a purchase
• Architects and builders needing verification for new construction
• Businesses, schools, and organisations working toward net zero goals

Whether you’re retrofitting an older home, quality-checking a new build, or developing an energy strategy for a commercial building, thermal imaging gives you the clear data needed to act.

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Why Choose Us?

Not all thermographic surveys are created equal. With us, you’re getting industry-leading expertise backed by decades of hands-on experience. Here’s what sets our service apart:

• Certified Thermographers: Our team is fully trained and certified to deliver accurate results.
• High-Tech Equipment: We use top-of-the-line infrared cameras and support tools like blower door and smoke testing for enhanced diagnostics.
• Fast Turnaround: Most surveys take 1–2 hours and reports are delivered within 5–10 working days.
• Competitive Pricing: Transparent quotes with no hidden fees.
• Regulatory Support: Assistance with BREEAM, EPC improvements, and building compliance.

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FAQs

How long does the survey take?
Surveys usually last between 1 to 2 hours, depending on the size and complexity of the building.

Do I need to prepare my home?
Yes, but it’s simple. We’ll give you clear guidance, such as heating your home a few hours in advance and keeping doors and windows shut during the survey.

How soon will I get the report?
Your illustrated thermographic report is typically delivered within 5–10 working days.

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Take the First Step Toward a Warmer, Greener Property

Don’t wait for another winter of high bills and cold rooms. A thermographic survey offers a fast, affordable way to make your property more efficient, comfortable, and future-ready.

Contact our expert team today to get a free consultation or instant quote. Most surveys are completed in under two hours, and the energy savings could last a lifetime.

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About the Author: Darren Helliwell

Darren Helliwell is a seasoned building performance specialist with over 25 years of experience in thermographic surveys, blower door testing, and airtightness consulting. He has worked on prestigious projects like Harrods, Battersea Power Station, and the Imperial War Museum, helping teams enhance building performance and energy efficiency.

Using advanced infrared cameras and complementary testing tools, Darren’s team identifies air leakage, insulation defects, and thermal bridging in both new and existing buildings. His mission? To empower homeowners, architects, and contractors with the insights they need to build better, healthier, and more efficient spaces.

👉 Connect on LinkedIn
📧 info@aptsoundtesting.co.uk
🌐 APT Building Thermography Reports

Thermal Imaging Surveys & Electrical Systems

Thermal imaging inspections are one of the most effective, non-intrusive ways to assess the health of electrical systems. Whether you’re managing a commercial property, industrial facility, or large-scale infrastructure, thermal imaging offers critical insights that can help reduce risk, increase efficiency, and lower costs.

While there are countless benefits to infrared thermographic surveys, here are the some of the major reasons why every business should consider regular inspections of their electrical systems:

1. Enhance Safety and Reduce Fire Risk

Overheated electrical components, loose connections, and failing systems are serious hazards that can lead to equipment failure, or worse, fires that endanger lives. Thermal imaging detects these issues early, helping you take action before a problem escalates.

2. Enable Preventive Maintenance

Thermal surveys allow you to spot problems before they cause downtime. By identifying potential faults early, you can replace or repair components proactively, saving time, money, and stress.

3. Improve Energy Efficiency

A single fault in your electrical system can cause a significant spike in energy use. Infrared inspections help you find and fix hidden inefficiencies, ultimately reducing energy consumption and operational costs.

4. Reduce Costs with Predictive Insights

Infrared surveys typically uncover five to eight electrical faults per inspection. These surveys are quick, cost-effective, and help you avoid expensive emergency repairs by identifying minor issues before they become major failures.

5. Stay Compliant with Fire Safety Regulations

Standards such as NFPA 70B recommend annual infrared inspections for electrical systems. Compliance not only improves safety but also protects your business from unplanned outages, equipment damage, and potential insurance claims.

6. Lower Insurance Premiums

Some insurers may offer reduced premiums for businesses that implement regular thermographic surveys as part of a documented preventive maintenance plan. It’s a small investment that could yield long-term financial benefits.

7. Safe, Non-Intrusive Testing

Thermal imaging is a non-contact, non-disruptive testing method. Inspections are conducted with your systems live and running, meaning no downtime or interruption to operations.

8. Targeted Maintenance Planning

By identifying exactly which components need attention—and the severity of any issues—you can plan maintenance more effectively, aligning it with operational schedules and reducing unnecessary repairs.

9. Extend Equipment Lifespan

Thermographic surveys provide valuable insights into the operating condition of your equipment. This helps prolong the life of critical assets by preventing premature failure and enabling smarter energy management.

10. Minimise Downtime and Breakdown Costs

Electrical failures can lead to production halts, expensive repairs, injury claims, or even litigation. Proactive infrared inspections drastically reduce these risks by catching faults before they lead to serious consequences.

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How Often Should You Conduct an Infrared Electrical Inspection?

For most facilities, we recommend scheduling an infrared electrical inspection every 6 to 12 months as part of a robust preventive maintenance plan. However, for environments with high-demand equipment, such as manufacturing plants or data centres, annual inspections are the minimum. Factors like equipment age, environmental conditions, and fault history may also influence inspection frequency.

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Professional Thermal Imaging Services in London

At APT Sound Testing, we specialise in delivering high-quality thermal imaging surveys for electrical systems across London and the UK. Our team of Level 3 certified thermographers use industry-leading FLIR P6n-Series (640×480 resolution) thermal imaging cameras to deliver pinpoint accuracy and professional insights.

Our Service Includes:

• An ITC-trained thermographer and Level 3 reporting assessment
• External inspection of:
  • Distribution boards
  • Fuse boards
  • Switchgear and switchboards
  • Control panels
  • Busbar systems
  • Transformers
• Identification of issues such as:
  • Loose connections
  • Overloaded/fatigued components
  • Uneven voltage distribution
  • Cooling blockages in transformers
• A comprehensive report highlighting all areas of concern

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Need expert thermal imaging for your electrical systems?
📧 Email us at: info@aptsoundtesting.co.uk
📞 Call APT Sound Testing on: 01525 303905 or 07775 623464

Let’s help you improve safety, reduce risk, and save money, one thermal image at a time.

# 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

Planning Noise Surveys: What You Need to Know

When planning a new residential or mixed-use development, noise impact is one of the many environmental factors that local authorities take seriously. Whether you’re developing a block of flats, a housing estate, or converting a commercial building into residential use, you may need to submit a noise survey as part of your planning application.

At APT Sound Testing, we specialise in carrying out detailed and cost-effective noise assessments in line with national planning guidelines. With vast experience in both BS8233 and BS4142 noise assessments, we’ve helped hundreds of developers, architects, planning consultants, and homeowners successfully navigate the acoustic requirements tied to planning approval.

Let’s break down what planning noise surveys involve and why they matter for your project.

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BS8233 Noise Assessments: Protecting Residential Spaces from External Noise

BS8233 noise surveys are most commonly requested when applying for planning permission for new homes, apartments, or hotels. Local authorities typically want to understand the potential impact of environmental noise on future occupants, ensuring any new development provides a comfortable living environment.

Why Are They Important?

Residential properties are susceptible to a range of external noise sources, from road traffic and railway lines to nearby commercial premises and entertainment venues. A BS8233 assessment helps ensure that external noise doesn’t intrude on the internal environment, safeguarding the health and wellbeing of future residents.

Under the National Planning Policy Framework (NPPF) in England and Wales, planning applications for noise-sensitive developments must demonstrate that noise has been considered and managed appropriately. A well-conducted noise survey does just that, by providing evidence-based recommendations for acoustic insulation and noise mitigation.

What’s Involved?

At APT Sound Testing, we carry out a thorough site assessment, usually over a 24-hour period, to capture ambient noise levels at the location. From there, we use the data to evaluate how sound may impact the proposed development. Based on our findings, we provide practical and cost-effective design guidance on noise control measures, such as upgraded glazing, acoustic ventilation, and boundary treatments like fencing or walls.

We’ve worked on everything from single dwellings to large multi-unit developments, so we can tailor our advice to suit your specific project and budget.

If your local authority has requested a BS8233 noise survey, don’t hesitate to reach out to us on 01525 303905 or email info@aptsoundtesting.co.uk. You can also learn more by visiting our BS8233 Noise Surveys page.

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BS4142 Noise Surveys: Managing Industrial Noise Impact

In contrast to BS8233, which is concerned with protecting residential interiors from environmental noise, BS4142 assessments are focused on evaluating the impact of industrial noise sources on nearby sensitive receivers, usually homes, schools, or other noise-sensitive buildings.

When Do You Need a BS4142 Survey?

If your project includes any mechanical plant (such as air conditioning units, refrigeration equipment, or extraction systems) or is near existing industrial or commercial activity, a BS4142 survey may be required as part of your planning conditions.

This is especially common where industrial and residential developments are being placed in close proximity, something we’re seeing more frequently due to brownfield redevelopment projects.

How Does the Survey Work?

The BS4142 assessment method compares the background sound level of an area with the noise level generated by an industrial or commercial source. This helps determine whether the new or existing noise will cause a disturbance to nearby residents.

Our process typically involves:

• Baseline monitoring over a 24-hour period to measure existing background noise (using LA90 values).
• Operational noise monitoring with the source active to identify its contribution to the overall soundscape.
• Impact predictions, where we model how a new noise source will affect nearby receptors before it’s even installed.

Our expert team uses this data to evaluate the significance of the noise impact, taking into account not only sound levels but also character (such as tonal or impulsive elements) and time of operation (day vs. night).

We provide a detailed written report that includes results, analysis, and clear recommendations for mitigation if necessary. This may include acoustic enclosures, silencers, or changes to operational times—plus noise mapping visualisations to show the effectiveness of proposed measures.

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A Complete Solution from Start to Finish

At APT Sound Testing, we pride ourselves on offering a comprehensive service that goes beyond noise assessments. In addition to acoustic design support, we also provide UKAS-accredited air tightness testing, allowing you to combine services into one seamless package. This approach can reduce project delays, minimise costs, and ensure your development complies with all the necessary standards.

Our experienced acoustic consultants are here to guide you from planning through to project completion, ensuring your development meets all environmental noise requirements. Whether you’re dealing with tight design constraints, complex site conditions, or challenging planning conditions, we’ll help you find the most effective solution.

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Get in Touch

If you’ve been asked to submit a noise assessment, whether under BS8233 or BS4142, as part of your planning application, we’re here to help. We offer a responsive, friendly service tailored to the unique requirements of your project.

📞 Call us on 01525 303905
📧 Email us at info@aptsoundtesting.co.uk
📩 Or use our online contact form and one of our consultants will get back to you promptly.

Let’s make sure noise doesn’t stand in the way of your planning approval.

Thermal Imaging & BREEAM Compliance

In the world of smart buildings and sustainable construction, electrical thermal imaging has emerged as an essential tool. By visualizing heat patterns in electrical systems, it helps facility managers spot potential faults early, before they escalate into costly or hazardous issues.

But thermal imaging isn’t just about safety and maintenance. It also plays a pivotal role in meeting BREEAM (Building Research Establishment Environmental Assessment Method) standards, a globally recognized benchmark for sustainable building performance. In this guide, we’ll dive into how thermal imaging supports BREEAM compliance, how inspections work, and why using FLIR-certified professionals is crucial for accurate results.

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What Is Electrical Thermal Imaging?

Electrical thermal imaging uses infrared (IR) cameras to detect and visualize heat emitted by electrical components. All systems produce heat during operation, but when something’s running too hot, it’s often a sign of trouble.

Common issues identified through thermal imaging include:

• Overloaded circuits
• Loose or corroded connections
• Deteriorating insulation
• Failing components

These heat anomalies are captured in thermographic images, or thermograms, which use color gradients to highlight temperature differences. Trained technicians interpret these visuals to spot irregularities, identify risks, and recommend targeted actions.

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Why It Matters: Thermal Imaging and BREEAM Compliance

BREEAM assesses how well a building performs across a range of sustainability metrics, including energy efficiency, resilience, and occupant safety. Electrical thermal imaging supports several key areas of the assessment:

• Uncovering energy inefficiencies like air leaks or poor insulation
• Identifying underperforming electrical systems before they impact operations
• Enhancing safety by spotting potential fire risks

Routine thermal inspections not only improve operational reliability but also contribute to BREEAM credits, boosting your building’s environmental credentials.

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How Thermal Imaging Inspections Are Conducted

A successful thermal inspection involves more than just pointing a camera at a panel. Here’s a step-by-step look at what goes into a professional assessment:

1. Preparation

Before any scanning begins, technicians outline a clear scope: which systems will be inspected and under what operating conditions. Importantly, systems must be energized and under load to generate useful heat signatures.

Safety is also paramount. Proper PPE (personal protective equipment) and compliance with electrical safety protocols are non-negotiable.

2. Data Collection

With a plan in place, technicians use high-resolution IR cameras to scan:

• Distribution boards
• Circuit breakers
• Switchgear
• Transformers
• Cabling and terminations

Camera settings, like emissivity, reflected temperature, and focus, are carefully calibrated to ensure accurate readings.

3. Image Analysis

Interpreting thermograms is where experience matters. Technicians look for:

• Concentrated hot spots
• Unusual thermal gradients
• Components running hotter than others in the same system

They must differentiate between genuine faults and environmental effects (like sunlight or reflections), ensuring conclusions are data-driven and reliable.

4. Reporting and Recommendations

A thorough inspection report includes:

• Annotated thermographic images
• Temperature data
• Fault severity assessments
• Suggested next steps

When done in accordance with BREEAM protocols, these reports can directly support certification documentation and long-term building strategies.

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FLIR Certification: Ensuring Accuracy and Reliability

While FLIR cameras are among the most trusted in the industry, certification is what separates amateurs from professionals. A FLIR-certified technician is trained to:

• Adjust settings based on surface types and environmental conditions
• Interpret thermal images accurately
• Avoid false positives and identify real faults

How Certification Works

Technicians complete tiered training (Level 1, Level 2, etc.), covering:

• Infrared physics and heat transfer
• Camera operation best practices
• Real-world fault detection scenarios
• Reporting standards aligned with industry and compliance frameworks

Certification ensures thermal inspections meet a consistent standard, essential when results impact building safety and certification outcomes.

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Beyond Compliance: Practical Benefits of Thermal Imaging

Thermal imaging is more versatile than you might think. Its applications extend well beyond electrical inspections:

Building Diagnostics

Use thermal scans to identify:

• Heat loss through walls, windows, or roofs
• Moisture ingress and water leaks
• HVAC inefficiencies

These insights support preventative maintenance and smarter facility planning.

Energy Audits

Thermal imaging plays a key role in energy efficiency assessments, helping prioritize upgrades that cut emissions and lower utility bills, another boost for BREEAM scoring.

Ongoing Monitoring

In mission-critical environments, permanent thermal cameras can provide real-time data for predictive maintenance, ensuring equipment stays online and operational.

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The Bottom Line

Electrical thermal imaging is a non-invasive, data-rich way to enhance building performance and safety. It’s a must-have for anyone aiming to:

• Maintain electrical integrity
• Reduce energy waste
• Meet BREEAM certification standards
• Avoid unexpected downtime and costly repairs

But success depends on two things: using the right equipment (like FLIR thermal cameras) and hiring trained, certified professionals to interpret the results.

Whether you’re managing a commercial facility, planning a retrofit, or pursuing green building credentials, thermal imaging is more than a helpful tool, it’s a strategic investment in your building’s future.

# 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

Sound Insulation Testing: What You Need to Know

Since July 2003, pre-completion sound insulation testing has been a legal requirement under Part E of the Building Regulations. At APT Sound Testing, we are a UKAS-accredited sound insulation testing laboratory offering expert guidance, fast testing, and reliable reports to help you meet building control sign-off requirements.

What Is Sound Insulation Testing?

Sound insulation testing measures how effectively walls, floors, and ceilings reduce the transmission of airborne and impact noise between adjoining rooms or dwellings. It is required for:

• New-build residential properties
• Conversions (e.g., commercial-to-residential)

The goal of Approved Document E (England, Wales, and Northern Ireland) is to limit noise disturbance between homes, protecting residents’ quality of life.

When Is Sound Testing Required?

All developments built after July 2003 must undergo sound insulation testing. Typically, 10% of each type of separating wall and floor construction must be tested. Tests are carried out between adjoining rooms across party walls or floors.

How to Prepare for a Sound Insulation Test

Proper preparation increases the likelihood of passing the test on the first attempt. When you book with us, we provide a detailed checklist to guide you. Here are some essential steps:

1. Minimize site noise – Avoid use of radios, power tools, or alarms.
2. Complete all internal constructions – Walls, floors, ceilings must be finished.
3. Fit windows and doors – Fully installed, glazed, and closed.
4. Install and close ventilation systems
5. Hang and close internal doors
6. Install skirting boards, sockets, and light switches
7. Do not lay final floor finishes – Bare structural floors are needed for impact testing.
8. Keep test rooms empty and accessible
9. Ensure no workers are on-site during testing
10. Provide access to both sides of separating walls/floors
11. Ensure 240v (50Hz) power is available

How Many Tests Are Required?

The number of tests depends on your development size and construction types. For example:

• Small to medium projects (up to 10 units): Often require one “6-pack” (2 airborne wall tests, 2 airborne floor tests, and 2 impact floor tests).
• Semi-detached houses: Typically only need 2 airborne wall tests.

We’ll assess your project and confirm the exact testing requirement when you request a quote.

What If My Building Fails the Test?

Don’t worry, failures can be rectified. If your development doesn’t meet the required standards, our experienced acoustic consultants will suggest targeted acoustic upgrades to help you pass on retest and achieve compliance.

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Why Choose APT Sound Testing?

• UKAS-accredited for peace of mind
• Nationwide coverage across the UK, including London
• Expert support from design stage through to final testing
• Fast turnaround and clear reporting
• Experience with residential, commercial, educational, and care buildings

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Need help with your project?
Call us today at 01525 303905 or fill out our online contact form. One of our friendly acoustic and air tightness consultants will be in touch to guide you through the process.

Maximizing Energy Efficiency Through Thermal Imaging Inspections

As energy efficiency becomes a top priority for both households and businesses, effectively managing heating and cooling costs is more important than ever. One of the most powerful tools available today is thermal imaging inspections, a technology that visually identifies areas of energy loss, allowing property owners to take targeted action. This article explores the role of thermal imaging in reducing energy bills and improving comfort, while outlining how to make the most of this innovative solution.

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Why Energy Efficiency Matters

Improving energy efficiency reduces utility bills and minimizes the environmental impact of energy consumption. When heating and cooling systems run more efficiently, less energy is wasted, cutting down on greenhouse gas emissions and lowering operating costs. As energy prices rise, the financial benefits of energy-efficient upgrades become increasingly compelling.

Efficient buildings are also more comfortable. Proper insulation and optimized HVAC systems help maintain stable indoor temperatures, enhancing the quality of life for occupants. For property owners and facility managers, energy efficiency supports better budgeting, increased asset value, and more sustainable operations.

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What is Thermal Imaging?

Thermal imaging is a non-invasive diagnostic method that uses infrared cameras to detect temperature differences on surfaces. These cameras generate thermographic images — thermograms — that reveal heat patterns, allowing inspectors to identify areas where heat is escaping or infiltrating a building.

Used widely in industries such as building diagnostics and preventive maintenance, thermal imaging is especially valuable for evaluating energy efficiency and the integrity of a building’s envelope.

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How Thermal Imaging Works

All objects emit infrared radiation relative to their temperature. Thermal cameras detect this radiation and translate it into color-coded images: red and yellow indicate heat, while blue and green signify cooler areas. These visuals help inspectors locate anomalies such as heat loss, insulation gaps, or moisture intrusion.

To ensure accuracy, environmental factors like wind, humidity, and temperature must be accounted for during inspection. Proper calibration and an understanding of building materials are essential for meaningful results.

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The Building Envelope: A Key Component

The building envelope consists of the walls, roof, windows, doors, and foundation that separate indoor and outdoor environments. Its design directly affects a structure’s thermal performance, air tightness, and moisture control.

Common issues in building envelopes include:

• Air leaks around windows and doors
• Insufficient insulation in walls or attics
• Thermal bridging, where heat bypasses insulation through conductive materials
• Moisture intrusion, leading to mold or damage

Thermal imaging can quickly pinpoint these problems, guiding timely and effective remediation.

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Benefits of Thermal Imaging Inspections

1. Detecting Heat Loss and Air Leaks
Thermal imaging highlights inefficient areas such as drafts or cold spots, enabling targeted improvements. Sealing leaks not only saves energy but also improves indoor air quality by limiting the infiltration of allergens and pollutants.

2. Improving Energy Efficiency
By identifying weak points in insulation or HVAC performance, thermal inspections allow property owners to prioritise upgrades. These changes can enhance comfort, reduce consumption, and even boost property value.

3. Cost Savings and Return on Investment
Addressing energy inefficiencies results in immediate and long-term financial benefits. Many improvements qualify for rebates or tax incentives, making upgrades more affordable. The savings from improved performance often exceed the cost of inspection and repairs.

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Conducting a Thermal Imaging Inspection

Professional vs. DIY
While DIY thermal cameras are available, they often lack the resolution and accuracy of professional equipment. Certified inspectors are trained to analyse thermograms correctly and understand how different building materials affect heat flow. Hiring a professional typically delivers more reliable results and better long-term value.

What to Expect
A typical inspection includes a full scan of the building envelope, walls, roof, windows, ceilings, using a high-resolution thermal camera. Inspections usually take 1 to 3 hours, depending on property size and complexity. You’ll receive a comprehensive report outlining findings, recommended actions, and estimated savings.

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Case Studies

Residential Example
A homeowner experiencing high winter energy bills scheduled a thermal inspection. The thermogram revealed air leaks around windows and poor attic insulation. After sealing gaps and upgrading insulation, the homeowner saw a 25% reduction in heating costs the next season.

Commercial Example
A medium-sized office building underwent a thermal inspection as part of an energy audit. The inspection exposed thermal bridging and inadequate insulation. After upgrading the building envelope and windows, energy costs dropped by 20%, significantly lowering operational expenses.

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Conclusion: Why Thermal Imaging is Worthwhile

Thermal imaging inspections are a smart, proactive way to enhance energy efficiency. They uncover hidden inefficiencies, help reduce utility bills, and improve occupant comfort. Whether you own a home or manage a commercial property, this technology provides valuable insights that drive sustainable upgrades and cost savings.

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Thinking of Booking a Thermal Imaging Inspection?

With energy costs on the rise, now is the time to act. APT Sound Testing offers professional thermal imaging inspections using the highest-grade cameras, operated by ITC Level 3-certified engineers. We specialise in accurate diagnostics and actionable insights.

📞 Call us today on 07775 623464 or 01525 303905
📧 Or email info@aptsoundtesting.co.uk

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FAQs

How much does a thermal imaging inspection cost?
Residential inspections range from £300–£700, while commercial inspections may cost £700–£2,000+, depending on the size and complexity of the building.

How long does it take?
Most inspections take 1–3 hours, but larger buildings may require more time.

Can I do it myself?
While possible, DIY inspections often lack precision. Certified professionals offer more accurate diagnostics and insights that DIY users may miss.

How often should inspections be done?
Every few years, or after major renovations. Regular inspections can also track energy performance over time, particularly for commercial buildings or facilities with complex HVAC systems.

What improvements might be needed after inspection?
Common upgrades include sealing air leaks, adding insulation, replacing inefficient windows, and enhancing HVAC performance, all of which contribute to energy savings and comfort.