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BS8233 Noise Assessments
Why BS8233 Noise Assessments Fail

Why BS8233 Noise Assessments Fail

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Guidelines as to Why BS8233 Noise Assessments Might Fail

Many planning applications are delayed or refused because the submitted BS8233 noise assessment does not fully meet the required planning conditions. This is often avoidable with the right approach, yet the same technical and reporting issues continue to appear across developments.

In this article, we break down the most common reasons BS8233 noise assessments fail, and how to avoid them, so your application has the best chance of approval first time.

A BS8233 noise assessment is a key requirement for many residential and mixed-use schemes. When completed correctly, it demonstrates that internal noise levels will comply with the guidance set out in BS 8233:2014, ensuring acceptable living conditions inside proposed dwellings.

When these assessments fall short, the consequences can include planning delays, redesign costs, or outright refusal.

1. Inadequate baseline noise monitoring

One of the most common reasons for failure is insufficient or unrepresentative baseline noise data.

Typical problems include:

  • Monitoring periods that are too short
  • Missing worst-case daytime or night-time conditions
  • Failure to capture LAmax noise events
  • Poor microphone positioning
  • Use of non-calibrated or incorrect class instrumentation

Local authorities expect robust, representative surveys carried out using UKAS-calibrated Class 1 equipment and appropriate methodology.

Further guidance: BS8233 Noise Surveys

2. Misapplication of BS8233 internal noise criteria

Another frequent issue is the incorrect interpretation of internal noise limits.

Common mistakes include:

  • Applying daytime criteria to bedrooms at night
  • Overlooking LAmax requirements
  • Using outdated or incorrect guidance thresholds
  • Failing to distinguish between room functions (e.g. living rooms vs bedrooms vs studies)

Each room type must be assessed against the correct internal noise targets to demonstrate compliance.

Learn more: BS8233 Noise Assessment Guide

3. Incorrect façade and glazing calculations

Even where external noise data is accurate, assessments can still fail due to flawed façade modelling.

Typical issues include:

  • Using generic glazing assumptions instead of tested Rw performance values
  • Ignoring acoustic performance of ventilation openings
  • Overlooking flanking transmission paths
  • Underestimating required façade insulation performance

A compliant BS8233 assessment must consider the full building envelope, not just window specifications.

See guidance here:
Façade Noise Calculations

4. Ventilation strategies that conflict with BS8233

Ventilation design is one of the most common reasons for failure in modern developments.

Problems often include:

  • Trickle vents specified in high noise exposure areas
  • MVHR systems provided without acoustic performance data
  • Reliance on open-window scenarios that are unrealistic for occupants
  • Conflicts between ventilation and overheating requirements

If ventilation pathways are not acoustically controlled, internal noise targets cannot be achieved.

Further reading: Acoustic Ventilation Strategies

5. Failure to consider LAmax night-time events

Many assessments focus only on LAeq values and overlook LAmax noise events, which are critical for sleep protection.

This is particularly important near:

  • Rail corridors
  • Flight paths
  • Major road networks
  • Industrial sites with impulsive or intermittent noise sources

Even where average noise levels comply, excessive LAmax events can lead to refusal on residential amenity grounds.

6. Weak or non-specific mitigation measures

Planning officers expect clear, actionable mitigation—not generic statements.

Common shortcomings include:

  • Vague glazing upgrade recommendations
  • Missing ventilation specifications
  • No treatment of external amenity areas (balconies, gardens, terraces)
  • Lack of design integration with architectural layout

A robust report should provide practical, buildable solutions that can be directly incorporated into the design.

7. Reports that do not meet planning documentation standards

Even technically sound assessments can fail if the report itself is not presented properly.

Typical issues include:

  • Lack of clarity or structure
  • Missing reference to relevant standards and guidance
  • No justification for assumptions used
  • Absence of calibration certificates or measurement logs
  • Incomplete supporting data

Planning authorities require transparent, well-evidenced reporting that can be independently verified.

Further reading on BS8233 and planning acoustics

To strengthen your understanding of BS8233 assessments and related planning requirements, the following resources may help:

Need help with a BS8233 noise assessment?

If you need support with a new BS8233 assessment, or if your report has been rejected by a local authority, APT Sound Testing provides UKAS-accredited acoustic consultancy services across England.

📞 Call APT Sound Testing: 07775 623464
📧 Email: info@aptsoundtesting.co.uk
🌐 Website: APT Sound Testing

Fast, compliant BS8233 assessments can help reduce delays and keep planning applications moving forward.

BS8233 Planning Noise Assessments
BS8233 Planning Noise Assessments

BS8233 Planning Noise Assessments

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BS8233 Internal Noise Level Criteria & Acoustic Design Guidance

When discussing planning noise assessments, many developers focus on obtaining planning approval and satisfying local authority requirements. However, achieving compliance with BS8233:2014 goes far beyond submitting a noise report. The real challenge is ensuring that future occupants enjoy acceptable internal noise levels once the building is occupied.

BS8233:2014 provides essential guidance on internal noise criteria, façade design, glazing performance, ventilation strategies, and acoustic design for residential and mixed-use developments. Understanding these requirements at an early stage can help avoid costly redesigns, planning delays, and compliance issues later in the project.

This guide explains the internal noise criteria contained within BS8233, how they are assessed, and what developers, architects, and planning consultants should consider when designing buildings in challenging acoustic environments.

What Does BS8233 Say About Internal Noise Levels?

BS8233 sets recommended internal noise limits for a range of residential spaces, including:

  • Living rooms
  • Bedrooms
  • Dining areas
  • Home offices and study rooms

These criteria are intended to provide comfortable living conditions and protect residents from excessive noise generated by:

  • Road traffic
  • Railways
  • Aircraft
  • Industrial operations
  • Commercial premises
  • Other environmental noise sources

The standard provides guidance on:

  • Recommended daytime and night-time LAeq noise levels
  • Maximum LAmax levels within bedrooms
  • Acoustic performance requirements for façades and glazing
  • Ventilation strategies that maintain internal acoustic comfort
  • Noise mitigation measures for new developments

For a broader overview of how BS8233 is applied during the planning process, see our guide to BS8233 Noise Surveys for New Developments.

Why Internal Noise Criteria Matter in Planning Noise Assessments

Local planning authorities frequently require BS8233-compliant noise assessments for:

  • New residential developments
  • Mixed-use developments
  • Permitted Development conversions
  • Sites located near major transport routes
  • Developments affected by commercial or industrial noise sources

While a noise survey may satisfy a planning condition, demonstrating compliance with BS8233 internal noise criteria is what ultimately determines whether a development is suitable for residential occupation.

Failure to achieve the recommended internal noise levels can result in planning objections, additional mitigation requirements, or costly design changes later in the project.

How Are Internal Noise Levels Assessed?

To demonstrate compliance with BS8233, acoustic consultants typically undertake a detailed assessment process that includes:

Measuring External Noise Levels

Environmental noise measurements are carried out to establish existing site conditions and identify dominant noise sources.

Assessing Façade Exposure

The most exposed elevations of the proposed development are identified to determine worst-case noise scenarios.

Calculating Sound Insulation Requirements

Acoustic calculations are performed to establish the level of façade sound insulation required to achieve acceptable internal noise levels.

Specifying Glazing and Ventilation Systems

Appropriate glazing specifications and ventilation strategies are selected to balance acoustic performance with building regulations and occupant comfort.

Predicting Internal Noise Levels

Using recognised BS8233 methodologies, consultants model internal noise levels within the proposed building to demonstrate compliance with the recommended criteria.

This process forms a key part of a comprehensive BS8233 Noise Assessment and is often supported by wider planning noise surveys where local authority or World Health Organisation (WHO) guidance also applies.

Common Mitigation Measures for BS8233 Compliance

Where external noise levels exceed recommended limits, a range of mitigation measures may be required.

Typical solutions include:

  • Enhanced acoustic double glazing
  • Triple glazing systems
  • Acoustic trickle ventilators
  • Mechanical Ventilation with Heat Recovery (MVHR)
  • Acoustic louvres and attenuators
  • Improved façade construction
  • Strategic room layouts and building orientation

The most effective solution will depend on the site’s specific noise environment, building design, and planning requirements.

Careful integration of façade design and ventilation systems is essential to ensure internal noise targets are achieved without compromising occupant comfort or energy efficiency.

The Importance of Early Acoustic Design

One of the most common issues encountered during planning is the late consideration of noise mitigation requirements.

By engaging an acoustic consultant during the early design stages, developers can:

  • Identify potential noise constraints before submitting a planning application
  • Reduce the risk of planning delays
  • Optimise glazing and ventilation specifications
  • Minimise construction costs
  • Improve residential amenity and marketability

Early acoustic input often results in more efficient and cost-effective solutions than attempting to retrofit mitigation measures after planning conditions have been imposed.

Why Choose APT Sound Testing for BS8233 Compliance?

APT Sound Testing supports developers, architects, and planning consultants throughout the UK with professional acoustic consultancy and environmental noise assessments.

Our expertise includes:

  • BS8233 Noise Surveys
  • BS8233 Noise Assessments
  • Planning Noise Surveys
  • Façade Noise Calculations
  • Acoustic Ventilation Design
  • Environmental Noise Monitoring

Clients choose APT Sound Testing because:

  • UKAS-accredited laboratory services
  • UKAS-calibrated Norsonic Class 1 sound measurement equipment
  • More than 25 years of environmental noise assessment experience
  • Fast response times and nationwide coverage
  • Clear, planning-focused reports accepted by local authorities

Our consultants regularly undertake BS8233 assessments across London, the South East, and throughout the UK, supporting projects ranging from small residential conversions to large-scale multi-unit developments.

Contact APT Sound Testing

If you require a BS8233 noise survey, planning noise assessment, or acoustic design advice, our experienced team is ready to help.

Call Darren: 07775 623464
Email: info@aptsoundtesting.co.uk
Website: https://aptsoundtesting.co.uk

We provide fast, accurate, and fully UKAS-accredited acoustic consultancy services throughout England.

Why Work With Us?

  • Competitive pricing
  • Friendly, proactive service
  • Experienced acoustic consultants
  • UKAS and ISO accredited
  • Fast response times
  • Rapid report turnaround
  • Nationwide coverage
  • Complete pre-completion testing solutions

Contact our team today to discuss your project requirements and ensure your development meets BS8233 acoustic standards from the outset.

Smoke Shaft Testing
A Guide to Smoke Shaft Air Testing

A Guide to Smoke Shaft Air Testing

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Elevate Fire Safety Standards with Professional Smoke Shaft Air Testing

Smoke shaft air testing is a critical component of modern fire safety strategies, helping to ensure that smoke control systems perform effectively when they are needed most. In the event of a fire, smoke presents one of the greatest risks to building occupants, accounting for more than 60% of fire-related fatalities through smoke inhalation.

Our premium smoke shaft testing service includes:

  • Smoke shaft survey visits by experienced consultants
  • We are a UKAS and ATTMA Level 2 accredited air testing company
  • Smoke shaft air test certification to UKAS/ATTMA
  • The latest high-powered fan equipment
  • UKAS calibrated equipment.
  • The best diagnostic leakage service using smoke machines & thermal imaging.
  • Rapid testing service

At APT, we provide comprehensive smoke shaft air tightness testing and remediation services, helping developers, contractors, and building owners achieve regulatory compliance while safeguarding occupants and emergency responders.

Why Is Smoke Shaft Air Testing Important?

Smoke shafts are commonly incorporated into fire-engineered solutions for high-rise residential and commercial buildings. As a key element of a building’s smoke control system, the air tightness of the smoke shaft is essential to its performance.

During a fire, smoke shafts work alongside Automatic Opening Ventilation (AOV) systems to remove smoke from escape routes and common access areas. However, if the shaft is not sufficiently airtight, the effectiveness of the entire smoke control system can be compromised.

Most smoke shafts are required to achieve an air permeability target of approximately 3.8 m³/hr/m². Failure to meet this standard can prevent the smoke control system from being signed off by the fire system contractor or Building Control.

Expert Testing and Remediation Services

APT has extensive experience testing smoke shafts of all sizes across a wide range of developments. In addition to air tightness testing, we offer specialist diagnostic services for smoke shafts that fail initial testing.

Using a combination of:

  • Smoke testing
  • Thermal imaging surveys
  • Air leakage diagnostics

we can quickly identify air leakage pathways within the smoke shaft envelope.

Our findings are compiled into a detailed air leakage report, enabling contractors to carry out targeted remedial sealing works. This focused approach reduces unnecessary disruption and significantly increases the likelihood of achieving a pass during subsequent testing.

Why Undertake Air Testing for Smoke Shafts?

1. Compliance with Legislation and Standards

All buildings incorporating smoke shafts should undergo air tightness testing to demonstrate compliance with relevant standards and fire safety requirements, including:

  • BS 9991:2015 – Fire safety in the design, management and use of residential buildings
  • BS 9999 – Fire safety in the design, management and use of buildings

Testing provides evidence that the smoke shaft performs as intended and supports Building Control approval.

2. Improved Fire Safety

Smoke is often more dangerous than flames during a fire emergency. Effective smoke control systems help to:

  • Protect escape routes for occupants
  • Improve visibility during evacuation
  • Reduce exposure to toxic smoke
  • Assist firefighters during rescue and firefighting operations

Air tightness testing helps ensure that smoke shafts can effectively remove smoke and maintain safe evacuation conditions.

3. Verification of System Performance

Before AOV systems can be commissioned, the smoke shaft must demonstrate adequate airtightness. Testing verifies that the shaft can operate efficiently and deliver the required smoke extraction performance during an emergency.

Building Regulations and Smoke Shaft Standards

Smoke shaft design and testing requirements continue to evolve alongside changes in UK fire safety legislation.

For residential developments, BS 9991:2015 provides detailed guidance on smoke control systems and the role of smoke shafts in maintaining safe means of escape. Compliance with these standards is increasingly important, particularly in higher-risk residential buildings.

Professional testing provides documented evidence that a smoke shaft meets the required performance criteria and supports the building approval process.

How Often Should a Smoke Shaft Be Air Tested?

The frequency of smoke shaft testing depends on several factors, including building type, maintenance schedules, insurance requirements, and regulatory obligations.

New Buildings and Major Refurbishments

Newly installed smoke shafts should always undergo initial air tightness testing before commissioning. This confirms compliance and verifies that the system will perform effectively during a fire emergency.

Ongoing Maintenance and Periodic Testing

Following initial certification, smoke shafts should be regularly inspected and retested to ensure ongoing performance. As a general guideline, annual testing every 12 months is recommended.

Regular testing helps identify:

  • Deterioration of seals
  • Damage to the shaft structure
  • Unauthorised modifications
  • Air leakage that could affect system performance

Proactive maintenance ensures continued compliance and reliability throughout the building’s lifecycle.

Why Choose APT for Smoke Shaft Air Testing?

APT has successfully undertaken smoke shaft and AOV testing across London and the South East on a number of prestigious projects, including:

  • Battersea Power Station
  • Imperial War Museum
  • Claridge’s Hotel
  • The Berkeley Hotel

As one of the few companies accredited for both building air tightness testing and specialist smoke shaft testing, we offer a level of expertise that sets us apart.

Our accreditations include:

  • UKAS accreditation
  • ATTMA Level 2 accreditation

Whether you require compliance testing, diagnostic investigations, or remediation support, our experienced team can help ensure your smoke shaft achieves the required performance standards.

Contact APT

For more information about our smoke shaft (AOV) testing services or to request a copy of our smoke shaft testing checklist, contact APT today by calling 01525 303905 and speak with one of our specialists.

Indoor Air Quality Testing
BREEAM Indoor Air Quality Testing

BREEAM Indoor Air Quality Testing

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BREEAM Indoor Air Quality Testing

APT Sound Testing has been providing BREEAM indoor air quality testing services such as post-construction air quality testing and indoor air monitoring for a number of years. We have assisted many customers in gaining their BREEAM and other compliance credits through our air quality plan and BREEAM air quality testing services.

As well as helping you to gain your initial (BREEAM) credit, by testing the indoor air quality our engineering team are then able to produce a bespoke indoor air quality plan. Our plans are able to provide you with the following benefits:

  • Advice on removal of contaminant sources
  • Dilution and control of contaminant sources
  • Procedures for pre-occupancy flush-out
  • Informative checklist to help you prepare for the third party testing
  • Third party testing and analysis
  • Advice on maintaining Indoor Air Quality In-Use

Our Services to attain extra BREEAM points for Indoor Air quality under BREEAM Hea0

There are two defined stages for achieving extra points under BREEAM Hea02. The first stage is the air quality plan and the second stage is indoor quality testing. here is a quick explanantion for each stage.

Stage 1 – BREEAM Indoor Air Quality Plan
The BREEAM Indoor Air Quality Plan reduces the risk of health deterioration and building performance by improving indoor air quality for the end user. It makes assurances in the design stage of a project which plan for the existence of ventilation, equipment and construction materials which improve indoor air quality for the buildings occupiers.

Stage 2 – BREEAM Indoor Air Quality Testing
Your project must be nearing completion, including a fully operational HVAC system, before an Indoor Air Quality Test can be carried out. The sampling identifies the presence of volatile organic compounds (TVOCs), including formaldehyde.

Where the levels of these compounds are found to exceed the prescribed limits, to claim the BREEAM credit it must be identified that appropriate measures have or will be undertaken in accordance with the IAQP and the consultant’s report recommendations to reduce the levels to fall within the limits.

We can undertake all your BREEAM Indoor Air Quality Testing requirements

Here at APT Sound Testing, we have significant experience in carrying out post-construction Indoor Air Quality (IAQ) testing. We are familiar with the stringent methods that are specified under BREEAM Hea02, Home Quality Mark (HQM) and other compliance standards. Our team will always provide a firm quotation and helpful checklist to help you prepare for the testing, prior to us visiting site to carry out this work.

We will ensure that all post-construction testing is carried out to the relevant standard that you are looking to achieve as specifications do vary.

When undertaking Indoor Air Quality Testing for BREEAM, we will typically test for Formaldehyde and TVOC in the air but can easily include other pollutants if required. We will normally sample rooms which will be occupied for long periods of time, for instance offices, hospitals and offices. It is important to make sure that a sufficient number of these rooms are tested in order to gain the relevant credit.

Our tasked team will make sure that all post-construction air quality tests are carried out in accordance with the very exacting BREEAM Hea02 methods. Our expert team will also provide free advice and guidance to your project manager to help to create the correct environment for the air quality tests as we have found over this years this to be very important.

To help you prepare for your Post Construction Air quality testing, please download our Indoor Air Quality Checklist. Need to add a BREEAM Indoor Air Quality testing checklist

Call us on 01525 303905 or email us on info@aptsoundtesting.co.uk about our Indoor Air Quality Testing services. We are here to help! Alternatively, please visit our contact page here.

Sound Test Failures in Flats
What Causes Sound Test Failures in Flats?

What Causes Sound Test Failures in Flats?

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Common Reasons Flats Fail Sound Insulation Testing in London

Sound test failures in flats are one of the most common issues we encounter across London and the South East — particularly on conversion projects, where existing buildings were never designed to comply with modern acoustic standards.

Older timber floors, lightweight partitions, poor detailing, and installation errors frequently lead to failed sound insulation tests under Approved Document E (Part E) of the Building Regulations.

The good news? Most failures are preventable.

Below, we explore the most common causes of sound test failures, why they happen, and how to avoid costly delays on your next project.

1. Poorly Installed Acoustic Insulation

Incorrectly fitted insulation is one of the leading causes of airborne sound test failures in flats.

Even when the correct specification has been selected, poor installation can significantly reduce acoustic performance.

Common installation problems include:

  • Acoustic insulation slumping to the bottom of joists
  • Missing sections or voids within floors or walls
  • Gaps between insulation and structural elements
  • Using low-density insulation instead of acoustic-grade mineral wool

Acoustic mineral wool should be installed tightly between joists and partitions, with no gaps or compression. Low-performance insulation or poor workmanship can leave separating structures unable to meet Part E requirements.

For further guidance on suitable constructions, see our article on Designing for Sound Insulation.

2. Gaps Around Perimeters and Service Penetrations

Sound always finds the path of least resistance.

In flats, we regularly identify hidden gaps that allow sound to bypass the main separating structure entirely — commonly known as flanking paths.

Typical problem areas include:

  • Unsealed floor perimeters
  • Gaps around pipes, sockets, and cable penetrations
  • Voids behind skirting boards
  • Open gaps around steel beams or joist ends
  • Poorly sealed chimney or fireplace openings

Even small defects can have a major impact. In some cases, a continuous 5mm perimeter gap can reduce airborne sound performance by up to 10dB, enough to cause a failed test.

Careful sealing with acoustic mastic and robust pre-completion inspections are essential.

For more information, read What Types of Sound Insulation Testing Are Needed for Flats?

3. Lightweight Floor Finishes Without Acoustic Underlay

Impact sound failures are especially common in London flats where hard floor finishes have been installed without suitable acoustic treatment.

This commonly affects:

  • Laminate flooring
  • Engineered timber flooring
  • Luxury Vinyl Tile (LVT)
  • Ceramic or stone tiles

Hard floor finishes transfer footfall noise directly into the structure, increasing impact noise levels in the flat below.

Typical causes of failure include:

  • No resilient acoustic layer beneath the floor
  • Thermal underlay used instead of acoustic underlay
  • Incorrect installation of underlay systems
  • Floating floors not isolated from perimeter walls

Without proper acoustic separation, even well-constructed floors can fail impact testing.

Read more in our guide to Sound Testing Floors in Flats.

4. Acoustic Bridging Between Structural Elements

Acoustic bridging occurs when parts of a structure that should remain isolated become accidentally connected, creating a rigid pathway for sound transmission.

This is one of the most overlooked causes of sound test failures.

Common examples include:

  • Resilient bars screwed directly into joists
  • Floating floors touching perimeter walls
  • Acoustic hangers fitted incorrectly
  • Ceiling joists making contact with partition walls
  • Plasterboard fixed through resilient layers

Even small bridging points can dramatically reduce the effectiveness of an acoustic build-up, resulting in failures for both airborne and impact sound insulation.

Attention to detail during installation is critical.

5. Incorrect Acoustic Build-Ups in Flat Conversions

Conversion projects are particularly vulnerable to failure because many older buildings were never designed for modern sound insulation standards.

In London conversions, we often see separating floors achieving only 30–35dB airborne performance, far below the 43dB minimum requirement under Part E.

Common issues include:

  • Thin timber joists
  • No insulation between joists
  • Single plasterboard ceilings
  • Missing resilient layers
  • Historic construction defects, gaps, and hidden voids

Without proper upgrades, these constructions are unlikely to pass testing.

At APT Sound Testing, we strongly recommend sample sound testing before works begin to establish the correct upgrade strategy and reduce the risk of expensive remedial work later.

See our guide to Pre & Post Construction Sound Testing Methodology for more detail.

6. Lightweight Masonry (Thermalite & Aircrete Blockwork)

Lightweight masonry — particularly Thermalite and other aircrete block systems — is a frequent cause of sound insulation test failures in both residential and commercial developments.

While these materials offer excellent thermal performance and are easy to work with on site, their low mass makes them acoustically weak.

Under Approved Document E, separating walls must achieve minimum airborne sound insulation standards, and lightweight blockwork often struggles to meet these requirements without additional acoustic treatment.

Why lightweight masonry can fail:

  • Low density (typically 400–600kg/m³) provides poor sound resistance
  • Mortar joints are inconsistent or poorly filled
  • Service chases are cut too deeply
  • Blockwork junctions are not fully bonded
  • Flanking transmission occurs via adjoining floors, ceilings, or walls

Lightweight blockwork can pass sound testing — but only when supported by the correct detailing, acoustic upgrades, and installation methods.

An early acoustic design review can identify weaknesses before construction is complete, reducing the risk of costly failures at the final testing stage.

For more information, read our article on the reasons party floors fail sound insulation testing.

How to Achieve a First-Time Sound Test Pass

Most sound test failures can be avoided through proper planning, specification, and site workmanship.

To maximise your chances of a first-time pass:

✅ Use acoustic-grade mineral wool insulation (45–60kg/m³)
✅ Seal all gaps using acoustic mastic
✅ Avoid lightweight masonry where possible
✅ Install resilient bars correctly
✅ Use high-quality acoustic underlays beneath hard floors
✅ Prevent acoustic bridging at all costs
✅ Follow a proven acoustic build-up design
✅ Carry out pre-completion inspections before testing

At APT Sound Testing, we can review drawings, inspect installations on site, and provide practical acoustic advice to help ensure compliance before testing takes place.

For more detailed guidance, see our article on How to Achieve a Sound Insulation Test Pass First Time.

Recommended Reading

If you are working on flats in London or the South East, the following guides may help:

Why Choose APT Sound Testing?

APT Sound Testing is one of the UK’s leading acoustic consultancies, offering:

  • UKAS-accredited testing laboratory status
  • ATTMA Level 2 certification
  • Over 22 years of acoustic testing experience
  • Specialist expertise in London and South East developments
  • Fast site attendance, often within 24–48 hours
  • Same-day certification
  • Combined compliance services, including air testing, thermal imaging, and smoke surveys
  • In-house sound test engineers — never subcontractors

Our experience allows us to quickly identify likely causes of failure, provide practical solutions, and help projects achieve a first-time pass wherever possible.

Contact APT Sound Testing

For sound insulation testing of flats in London and the South East — or advice on acoustic design and compliance — contact APT Sound Testing today.

APT Sound Testing
Email: Info@aptsoundtesting.co.uk
Phone: 07775 623464
Website: www.aptsoundtesting.co.uk

We can usually attend site within 24–48 hours, with certificates often issued the same day.

APT Sound Testing
Air Tightness Testing on Large Buildings

Air Tightness Testing on Large Buildings

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APT Sound Testing: the Leading Choice for Commercial Air Tightness Testing on Large Buildings

Airtightness has become one of the most important performance metrics in modern commercial construction. As the UK tightens energy‑efficiency requirements under Approved Document L and pushes toward net‑zero targets, developers and contractors must ensure their buildings achieve low air‑leakage rates, reduced heat loss, and long‑term operational efficiency.

APT Sound Testing Ltd has established itself as one of the UK’s leading specialists in commercial air tightness testing, particularly for large and complex buildings. With UKAS accreditation, ATTMA Level 2 certification, advanced multi‑fan blower door systems, and integrated diagnostic tools such as smoke testing and thermal imaging, APT delivers a level of accuracy and insight that few companies can match.

This article explores why APT Sound Testing is the preferred partner for commercial clients—and how their combined testing methodology helps buildings achieve compliance first time.

The Importance of Airtightness in Commercial Buildings

Air leakage is one of the biggest contributors to heat loss in commercial buildings. Uncontrolled infiltration can account for 20–40% of total heating demand, especially in older or poorly sealed structures. APT’s blog Measuring the Air Tightness of Buildings explains how leakage affects energy performance and why accurate testing is essential:

Reducing leakage from 12–15 m³/hr/m² to below 5 m³/hr/m² can save thousands of pounds annually in heating costs. For large buildings, the financial and environmental benefits are even greater.

High‑Power Multi‑Fan Blower Door Testing for Large Buildings

APT Sound Testing is one of the few UK companies equipped with six‑fan blower door systems, enabling them to test buildings over 10,000 m² in a single setup. This capability is essential for:

  • Warehouses and logistics hubs
  • Hospitals and healthcare facilities
  • Schools and universities
  • Office buildings
  • Mixed‑use developments

Their blog Our Air Tightness Testing Procedure provides a detailed breakdown of the testing process, including pressure steps, equipment, and compliance requirements:

Using high‑power multi‑fan systems ensures:

  • Faster testing
  • Minimal disruption
  • Highly accurate results
  • Full compliance with ATTMA TSL2 and Building Regulations

Smoke Testing: Visual Identification of Leakage Paths

While blower door testing quantifies leakage, smoke testing reveals it visually. APT uses small and large scale smoke machines to show exactly where air is escaping or entering the building envelope.

This method is particularly effective for identifying leakage around:

  • Raised access floors
  • Suspended ceilings
  • Service penetrations
  • Door sets and lobbies
  • Roof junctions
  • Wet rooms and plant areas

APT’s blog The Importance of Air Tightness Testing highlights how smoke testing provides immediate clarity for site teams, enabling targeted remedial sealing:

This reduces guesswork and increases the likelihood of passing the final compliance test on the first attempt.

Thermal Imaging: The Most Powerful Diagnostic Tool for Hidden Defects

APT’s thermal imaging surveys are carried out by Level 2 and Level 3 certified thermographers using high‑resolution FLIR cameras. Thermal imaging is essential for identifying:

  • Missing or damaged insulation
  • Cold bridging
  • Hidden air leakage
  • Moisture ingress
  • Poor thermal comfort
  • Mould and condensation risks

When combined with blower door depressurisation, thermal imaging becomes even more effective. Cold external air entering the building appears as clear thermal signatures, revealing:

  • Poorly sealed windows and doors
  • Leaking service penetrations
  • Defective roof/wall junctions
  • Gaps behind cladding or drylining

APT’s blog Residential Air Tightness Testing– Q&A explains how thermal imaging can uncover issues that would otherwise remain invisible:

Why APT’s Combined Approach Delivers the Best Results

APT Sound Testing’s integrated methodology, blower door testing + smoke testing + thermal imaging, provides a complete picture of a building’s airtightness.

This combined approach ensures:

  • No leakage path is missed
  • Hidden defects are exposed
  • Contractors receive clear, actionable guidance
  • Remedial works are targeted and efficient
  • Compliance is achieved faster

Their blog Air Tightness Testing for PAS2035 reinforces how diagnostic‑rich testing supports both compliance and long‑term building performance:

Regulatory Compliance and BREEAM Benefits

APT’s testing approach aligns with:

  • Approved Document L2A – New non‑dwellings
  • Approved Document L2B – Existing non‑dwellings

Thermal imaging also contributes to BREEAM credits, making it a valuable tool for sustainable building certification.

Why Commercial Clients Choose APT Sound Testing Ltd

UKAS Accredited Testing

Ensures full compliance with Building Regulations and industry standards.

Expertise in Large and Complex Buildings

Engineers are ATTMA Level 2 certified and highly experienced in large‑scale commercial testing.

Advanced Diagnostic Capability

Few companies offer integrated blower door, smoke, and thermal imaging surveys at this level.

Fast Reporting and Clear Contractor Guidance

Reports are designed for site teams—clear, actionable, and technically robust.

Nationwide Coverage

APT can respond quickly to projects across the UK.

Over 22 Years of Experience

A long‑established specialist with a proven track record.

Conclusion: APT Delivers Compliance, Efficiency, and Long‑Term Value

For developers, contractors, and building owners, airtightness is not just a compliance checkbox, it is a long‑term investment in energy performance, operational efficiency, and occupant wellbeing.

APT Sound Testing Ltd stands out because they don’t just test buildings, they diagnose, explain, and solve airtightness problems. Their integrated approach, advanced equipment, and highly trained engineers make them one of the UK’s leading providers for large‑scale commercial air testing.

Contact APT Sound Testing Ltd

If you would like to arrange commercial air tightness testing, smoke testing, or thermal imaging for your project, APT Sound Testing Ltd offers nationwide coverage and rapid response times.

APT Sound Testing Ltd
Phone: 07775 623464
Email: info@aptsoundtesting.co.uk
Website: https://aptsoundtesting.co.uk

For more technical guidance, case studies, and insights, visit the APT Sound Testing blog: https://aptsoundtesting.co.uk/blog/

Air Tightness Testing
High-Capacity Air Tightness Testing

High-Capacity Air Tightness Testing

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High-Capacity Air Tightness Testing for Buildings Over 10,000 m²

As building regulations tighten and energy performance standards continue to rise, airtightness testing has become a critical part of modern construction. For large commercial and industrial developments, achieving compliance is no longer just about meeting regulations — it’s about improving long-term efficiency, reducing operational costs, and ensuring high-quality construction standards.

However, testing very large buildings requires far more than standard equipment and basic experience.

APT Sound Testing is one of the few specialist companies in the UK with the capability to carry out air pressure testing on buildings exceeding 10,000 m². Backed by a high-powered 6-fan blower door system, Level 2 ATTMA registration, and UKAS accreditation, we provide reliable, accurate, and fully compliant airtightness testing for even the most complex projects.

Specialist Equipment for Very Large Buildings

Most air tightness testing companies operate with one or two fans, which is generally sufficient for residential properties and smaller commercial units. Large-scale developments, however, demand significantly greater airflow and testing capacity.

APT Sound Testing has invested in an advanced multi-fan blower door system specifically designed for testing large-volume buildings, including:

  • Warehouses and logistics centres
  • Supermarkets and large retail developments
  • Schools, hospitals, and public sector buildings
  • Multi-storey residential developments
  • Industrial and manufacturing facilities
  • Buildings with complex internal zoning

Our high-capacity system allows us to maintain stable test pressures across vast internal spaces while delivering highly accurate results. This not only ensures compliance with ATTMA TSL1, TSL2, and Part L requirements, but also reduces testing time and minimises disruption to construction programmes.

For buildings over 10,000 m², this level of capability is essential — and still relatively rare within the industry.

Why Accreditation Matters

Large-scale airtightness testing is not simply about using larger fans. It requires technical expertise, precise procedures, and recognised accreditation to ensure results are accepted by Building Control and project stakeholders.

APT Sound Testing is:

  • Level 2 ATTMA Registered — authorised to test large, complex, and multi-zone buildings
  • UKAS Accredited — providing independently verified testing procedures and traceable results

This gives contractors, developers, and consultants complete confidence that testing is carried out to the highest industry standards.

Our accreditation helps clients achieve:

  • Compliance with Building Regulations Part L
  • Acceptance by Building Control and warranty providers
  • Support for BREEAM and sustainability targets
  • Reduced risk of costly retesting or project delays

For large and high-value developments, using an accredited testing provider is essential to avoid unnecessary complications later in the programme.

Advanced Air Leakage Diagnostic Surveys

Achieving airtightness on large buildings can be challenging. Minor defects repeated across thousands of square metres can quickly lead to significant leakage rates.

To help identify and resolve problems efficiently, APT Sound Testing provides detailed air leakage diagnostic surveys using advanced testing methods.

Smoke Testing

Under pressurised conditions, smoke testing visually identifies leakage paths throughout the building envelope, including:

  • Cladding interface failures
  • Poorly sealed service penetrations
  • Faulty window and door seals
  • Roof-to-wall junction leakage
  • Hidden construction gaps and voids

This allows contractors to pinpoint issues quickly and carry out targeted remedial works.

Thermal Imaging Surveys

Thermal imaging inspections are another highly effective diagnostic tool, especially when combined with depressurisation testing.

Thermal imaging can identify:

  • Cold air infiltration
  • Missing or poorly installed insulation
  • Thermal bridging
  • Hidden air leakage not visible during visual inspections

These surveys provide valuable insight into both airtightness performance and overall building envelope quality.

Detailed Leakage Reporting

APT Sound Testing provides comprehensive reports designed to help site teams resolve issues quickly and efficiently.

Our reports include:

  • Annotated photographs and thermal images
  • Leakage severity assessments
  • Root-cause analysis
  • Recommended remedial actions
  • Prioritised sealing guidance

This structured approach helps contractors achieve compliance faster while avoiding unnecessary remedial costs.

Why Large Buildings Need Specialist Testing

Testing a building over 10,000 m² is fundamentally different from testing smaller properties. It requires:

  • High-capacity blower door systems
  • Advanced airflow measurement
  • Multi-zone testing strategies
  • Experienced engineers
  • Robust diagnostic procedures
  • Accredited reporting methods

Without the correct expertise and equipment, test results can become unreliable — potentially leading to failed compliance, programme delays, and expensive retesting.

APT Sound Testing removes these risks by providing a complete large-building airtightness testing solution from initial consultation through to final certification.

Supporting Projects from Design to Completion

Modern construction programmes are demanding, and airtightness performance must often be achieved within tight timescales.

APT Sound Testing supports clients throughout the entire process with services including:

  • Design-stage consultancy
  • Pre-test inspections
  • Large-scale air pressure testing
  • Diagnostic leakage surveys
  • Remedial guidance and support
  • Fast-turnaround reporting

Our objective is simple: help projects achieve compliance first time.

Airtightness Testing for BREEAM and Energy Efficiency

For developments targeting BREEAM certification, improved EPC ratings, or enhanced energy performance, airtightness plays a major role in overall building efficiency.

Our testing services support:

  • BREEAM Hea 02 and Ene 01 credits
  • Improved EPC and SBEM calculations
  • Reduced heating and cooling demand
  • Lower long-term operational energy costs

On large buildings, even small improvements in airtightness can result in significant energy savings over the building’s lifespan.

Why Choose APT Sound Testing?

APT Sound Testing is trusted nationwide for large-scale airtightness testing because we combine specialist equipment with accredited expertise.

Our services include:

  • High-powered blower door systems for buildings above 10,000 m²
  • Level 2 ATTMA Registered testing
  • UKAS Accredited procedures
  • Smoke testing and thermal imaging diagnostics
  • Detailed and actionable reporting
  • Fast turnaround times
  • Nationwide coverage

We continue to support contractors, developers, architects, and consultants across the UK on some of the country’s most demanding airtightness projects.

Contact APT Sound Testing

For large-scale air pressure testing, air leakage diagnostics, or technical advice, contact APT Sound Testing today.

Phone: 07775 623464
Email: info@aptsoundtesting.co.uk
Website: https://aptsoundtesting.co.uk/

BS8233 Noise Assessments
Acoustic Consultancy Testing Services

Acoustic Consultancy Testing Services

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Acoustic Consultancy Testing Services

As leading Acoustic Consultants, we offer a full turnkey solution for all your acoustic requirements to ensure compliance with planning requirements and Building Regulations Part E to achieve building control sign off for the acoustic elements of the project. This ensures your company receives professional advice every step of the way, with an on-going continual consideration of cost.

We visit site to undertake sample sound insulation testing to the existing buildings walls and floors to check the sound insulation performance of the existing dividing partitions. Thereafter, once the sound levels have been established and targeted acoustic design can be undertaken to ensure compliance with Building Regulations Part E.

We can help develop the acoustic design of the project from the initial design scheme stage through to the precompletion sound testing. In particular we review the acoustic details to take into account the mass, isolation and absorption elements of the construction.

Acoustic Design Package

To try and help our clients achieve compliance with Approved Document E, we offer the following 4 step acoustic design advice package:

  1. Site Survey Visits – to let us view the existing site construction. This allows us to check for potential problematic construction such as inclusion of lightweight blocks in the existing construction. It also lets us check that the installation teams are installing the acoustic materials as per manufacturer’s guidelines.
  2. Sample Sound Testing – of the existing construction. This offers an accurate overview of the acoustic performance of the existing partitions which enables us to offer a targeted acoustic design using the sound insulation performance of the existing construction.
  3. Acoustic Design Review – a full design review of the proposed developments party walls and floors. Site Survey Visits – to let us view the existing site construction. This allows us to check for potential problematic construction such as inclusion of lightweight blocks in the existing construction. It also lets us check that the installation teams are installing the acoustic materials as per manufacturer’s guidelines.
  4. Pre-completion Sound Testing to satisfy Approved Document E – If the local authority has requested you undertake Sound Insulation Testing please call us now on: 01525 303905 or email us at: info@aptsoundtesting.co.uk

Part E Sound Insulation Testing
Pre completion sound testing under Part E of Building Regulations has been a mandatory requirement since July 2003. All new build properties and conversions which were built after this date require 10% of each party wall/floor construction type to be tested. Sound Testing is to be carried out between pairs of rooms separated by party walls or floors.

Sound insulation testing is required to make sure that a residential development can demonstrate acceptable levels of noise attenuation performance. Building Regulations Part E requires you undertake two different types of sound testing including airborne noise (i.e. sound/noise transmitted through the air, such as televisions and conversations between people) and impact noise (i.e. noise resulting from an impact on the floor surface, such as footsteps on the floor). By undertaking the two types of sound testing ensures the dwelling provides a reasonable resistance to the passage of sound.

We are a UKAS-accredited sound insulation testing laboratory providing our valued clients with a proactive sound testing service and reliable reportage to achieve building control sign off. Utilising our many years of acoustic design experience means that your project will be in safe hands from the initial design stage to the final precompletion testing of the project.

Acoustic Design Services
We have many years’ experience of acoustic partition design on all types of developments from pairs of semi-detached houses, up apartment blocks containing hundreds of residential units. Utilising our vast experience in construction design, and the data from thousands of sound insulation tests, we have a clear understanding of the positives and negatives of all types of construction.

We are also a UKAS accredited sound testing laboratory which means we can offer a comprehensive design and testing solution for all your acoustic requirements. We can test and issue certification on completion of any works carried out and you can be safe in the knowledge that the results will be accepted by the tasked building control officer.

We have undertaken hundreds of acoustic design and sound test packages on many different types of projects, from the initial scheme stage to completion. We offer a no nonsense professional proactive that ensures you company receives professional advice every step of the way, with a continual consideration of cost.

In order to achieve the current sound insulation performance requirements of Approved Document E of the current Building Regulations, it is highly recommended you employ the services of an Acoustic Consultancy such as APT Sound Testing to survey your acoustic design/construction proposals.

We can also undertake site survey visits which allow you to feel confident about the outcome of testing at the end of the build. The site survey visits help to reduce the risk of sound test failure due to poor workmanship. We provide full ISO compliant UKAS accredited surveys and testing, using the latest calibrated Norsonic sound testing equipment.

Site Survey Visits
We offer site survey visits which allow you (the client) and your contractor to feel confident about the outcome of testing at the end of the build. The site visits let us check that the installation teams are installing the acoustic materials as per manufacturers avoiding crucial onsite mistakes. You can often have a compliant design which still fails due to poor workmanship; the site survey visits negate the risk of sound test failure.

If you are unsure of the acoustic requirements on your acoustic project or any Sound Testing project, please call us now on: 01525 303905, contact us using our online contact form or email us at: info@aptsoundtesting.co.uk.

APT Sound Testing and Acoustic Design
APT Sound Testing and Acoustic Design

APT Sound Testing and Acoustic Design

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APT Sound Testing and Acoustic Design Services
Here at APT Sound Testing 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. We can also undertake ‘in house’ UKAS accredited air tightness testing in one seamless package, lowering costs and negating coordination issues.We provide UKAS accredited sound testing for London and the whole of the UK as required by Approved Document E of the Building Regulations.

APT Sound Testing and Acoustic Design

Experienced Sound Testing Engineers
The team of experienced sound test engineers at APT Sound Testing 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.

Who We Work With
APT Sound Testing have years of experience working with a wide range of clients that span both the public and private sectors. We have clients ranging from self-builders through to the largest housing developers. We also work with the health authority and the banking sector on their cleanroom testing. Our clients have benefited from our wealth of knowledge and friendly, proactive service that we provide.

We have one of the highest return-client rates of any precompletion testing and consultancy services within London and the wider United Kingdom. This is due to the proactive unique service that we can provide.

We do not subcontract our work – everything is undertaken in-house.

We are one of the few companies that have an office in central London, which means we can respond quickly and efficiently to our client’s survey and testing requirements.

We also have the resources to undertake last minute testing have the resource capabilities to carry our last minute testing and weekend working – which we often do in the banking sector) should it be required.

Thanks to highly trained engineers, we are able to provide a quick and efficient service with the emphasis on customer satisfaction, which is why we have one of highest return-client rates of any acoustic consultancy. Using our many years’ acoustic design experience has allowed us to build a knowledge base that helps us achieve an understanding of our client and project requirements. We are also a multi UKAS accredited laboratory, working to strict ISO standards so you can sure of a quality service from start to project completion.

In is our ongoing policy to listen to our clients’ needs and present them with practical, cost-effective solutions which also takes into account buildability considerations. This means that we offer acoustic consultancy solutions, which encompasses acoustic design and precompletion testing in one easy package.

We use the latest acoustic testing and survey equipment which is UKAS calibrated to the highest standards. By investing in both our personnel and equipment it allows us to offer a more efficient service.

For more information get in touch by calling 01525 303905, by email info@aptsoundtesting.co.uk or via our website contact form to discuss your specific requirements with our friendly and knowledgeable acoustic and air tightness consultants. APT Sound Testing always strive to provide our clients with a guaranteed quality service every time they decide to get in touch.

Data Centre Reliability
Thermal Imaging & Data Centre Reliability

Thermal Imaging & Data Centre Reliability

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Why UPS Thermal Imaging Is Critical for Data Centre Reliability

So, why is UPS Thermal Imaging Is Critical for Data Centre Reliability? Keeping data centres online is a constant battle against heat, load stress, and component degradation. Among all the systems that keep a facility running, the Uninterruptible Power Supply (UPS) is arguably the most vital. It acts as the bridge between mains power and backup generation, protecting servers, cooling systems, and network infrastructure from even the slightest electrical disturbance.

But despite its importance, the UPS is also one of the most common points of failure in mission‑critical environments. Batteries degrade, capacitors overheat, terminals loosen, and internal components age — often silently. That’s why UPS thermal imaging has become an essential tool for modern data‑centre maintenance.

Thermal imaging allows engineers to detect early‑stage faults long before alarms activate or components fail. It’s non‑intrusive, highly accurate, and performed while systems remain fully energised. For operators responsible for uptime, it’s one of the most cost‑effective risk‑reduction strategies available.

If you’re new to thermal imaging, you may want to explore the fundamentals in our electrical thermal imaging guide:
🔗 What Is an Electrical Infrared Thermal Imaging Survey?

Why Data Centre UPS Systems Are So Vulnerable to Failure

UPS systems work continuously, often under heavy load. Over time, this constant stress causes components to deteriorate. Batteries are the most obvious weak point, but they’re far from the only one.

Common UPS failure points include:

  • Ageing or failing battery cells
  • Loose or corroded battery terminals
  • Overheating capacitors
  • Load imbalance across phases
  • Blocked or failing cooling fans
  • Internal component degradation

These issues rarely produce visible symptoms. Instead, they manifest as abnormal heat patterns, which is why thermal imaging is so effective at detecting them.

To understand the types of faults that commonly occur, see our most common electrical; hotspots guide:
🔗 The Most Common Electrical Hotspots Found in Data Centres

How Thermal Imaging Identifies UPS Problems Early

UPS thermal imaging is performed while the system is live and under load. This is crucial because many faults only appear when the UPS is actively supporting equipment.

Thermal imaging can reveal:

  • Battery cells entering early thermal runaway
  • Loose battery terminals generating resistance heat
  • Overloaded output phases
  • Overheating capacitors nearing end‑of‑life
  • Cooling blockages causing internal hotspots
  • Imbalanced loads across UPS strings

These thermal anomalies are often invisible to the naked eye but stand out clearly on an infrared scan.

If you want to understand the terminology used in thermal imaging reports, our glossary may help:
🔗 Electrical Thermal Imaging Glossary of Terms

Why UPS Battery Thermography Is Essential

Batteries are the most failure‑prone part of any UPS system. A single failing cell can compromise an entire string, reducing runtime and increasing the risk of a full UPS shutdown.

Thermal imaging identifies:

  • Hot battery blocks
  • Imbalanced temperatures across strings
  • Poor terminal connections
  • Early‑stage thermal runaway indicators

For a broader look at building‑wide thermal imaging, see:
🔗 Electrical Thermal Imaging Surveys for Your Building

The Cost of UPS Failure in a Data Centre

A UPS failure can trigger:

  • Server shutdowns
  • Cooling system loss
  • Data corruption
  • SLA breaches
  • Emergency repairs
  • Full‑hall outages
  • Critical asset breakdown

With downtime costing £1000’s per minute, even a short interruption can have major financial consequences.

If you’re comparing costs for preventative maintenance, this guide may help:
🔗 How Much Does an Electrical Thermal Imaging Survey Cost?

How Thermal Imaging Compares to Traditional Electrical Testing

Traditional electrical testing is essential for compliance, but it cannot detect heat‑related faults or load imbalance. Thermography fills this gap by offering:

  • Real‑time insight under load
  • Non‑intrusive testing with zero downtime
  • Early detection of hidden faults
  • Visual evidence for maintenance planning

For a deeper comparison, see:
🔗 Thermal Imaging Inspections for Electrical Equipment Maintenance

Why Thermal Imaging Supports Insurance and Compliance

Many insurers now require annual thermographic inspections for high‑value facilities like data centres. Thermal imaging provides evidence of proactive maintenance and reduces the risk of electrical fire.

Learn more here:
🔗 Electrical Thermal Imaging Inspections for Building Insurance Compliance

Why Choose APT for UPS Thermal Imaging?

APT specialises in high‑accuracy thermal imaging for mission‑critical environments. Our engineers are trained to work in live electrical settings and understand the unique challenges of data‑centre power systems.

To see why operators trust us, visit:
🔗 Why Pick APT to Undertake Your Electrical Thermal Imaging Inspection?

If your facility is London‑based, you may also find this useful:
🔗 Electrical Thermographic Surveys in London

Out Thermal Imaging Inspection Service for Data Centres

Our team of Level 3 certified professional Thermographers are highly experienced in carrying out thermal imaging surveys to all types of data centres.  Our thermal imaging reportage is both detailed and can be supplied in 24 hours. Using the latest thermal imaging equipment and Level 3 Thermographers, we often pick up faults that other companies may miss.

Our Data centre thermal imaging service includes:

  • Supply of an ITC trained thermographer and level 3 reporting assessment using a large format FLIR P6n-Series (640×480 resolution) thermal imaging camera.
  • To supply an external thermographic inspection of the electrical systems, taking into account, distribution boards, fuse boards, Switchgears, switchboards, Control panels, Busbar systems and Transformers.
  • Looking for loose connections, overloaded and/or fatigued components, uneven voltage distribution and blockages in cooling tubes of transformers
  • A detailed report clearly showing any areas of concern

We hope this article has been of benefit; however if you require more information on our thermal imaging service for electrical systems in London, please contact Darren at: darren@aptsoundtesting.co.uk or call direct on: 07775623464.