Expert Building Investigations across England

With confidence built in

With over 30 years of hands-on expertise and laboratory-backed analysis, we deliver indepth data and actionable insights via a combination of non-destructive testing (NDT), physical exposure techniques, and advanced material sampling.

HTA provides comprehensive and detailed Building Investigations across England, helping asset owners, consultants, and facilities managers gain clarity on building condition, compliance, and performance.

Our building investigations fall into two core categories: construction identification and condition assessment. These services are essential when purchasing, refurbishing, maintaining or reassessing the safety of commercial or public buildings throughout England.

Understanding Building Construction: Know What You're Working With

HTA removes the guesswork by determining exactly how your building is built. Whether you’re looking to identify legacy materials, structural systems, or compliance with modern standards, our full-service team ensures no surprises on site—and no need to manage multiple providers.

• Concrete Type
  Is it reinforced, pre-cast, post tensioned or steel encased
• Concrete Strength
  Determination carried out via NDT and compressive testing
• Steel Reinforcement
  NDT to determine of bar depth and pattern including multiple layers
• Steel Grade
  Determination of tensile strength via removal of samples
• Metal Beams
  Determination of construction details by exposure
• Metal Beam Weldability
  Chemical analysis determining carbon equivalent value
• Metal Type & Grade
  By removal of samples and metallurgical testing
• Cavity Wall Ties
  Determining presence and correct spacing
• Masonry Construction Details
  Determination via NDT, exposure and coring
• Masonry & Mortar Strength
  Determination via sampling and analysis
• Paint Inspections
  Adhesion testing plus sampling for lead content and type analysis
• Timber & Wood
  Visual assessment, grading plus dry and wet rot surveys

Assessing Building Condition: Prevent Future Failures

Many issues can lie hidden behind facades and finishes. Our condition surveys uncover degradation, corrosion, and risks due to ageing or non-compliance. We help you avoid costly failures and support your asset planning with technical accuracy and professional reports.

• Regent Street Disease
  Assessing the presence and condition of embedded metal elements
• Reinforced Concrete
  NDT to determine extent & rate of corrosion of embedded reinforcement
• HAC Concrete
  Detection and condition of High Alumina Cement elements
• RAAC
  Detection and condition of Reinforced Autoclaved Aerated Concrete
• Post Tensioned Concrete
  NDT and sampling to determine post tension condition
• Metal Elements
  Ultrasonic thickness technology for corrosion surveys
• Welds
  Ultrasonic technology, MPI and DYE Penetration for inspection and testing
• Cavity Wall Ties
  Determining embedment, condition and type
• Masonry Condition
  Visual assessment to determine loss of brick facade and mortar beds
• Paint Condition
  Visual assessment for debondment, cracking and failure
• Timber & Wood
  ssessment for dry and wet rot surveys and insect attack

Showtime: 50M MEWP at Reading House

Let's Build your Confidence in moving forward - Contact HTA Today

Whether you're looking at a heritage asset or overseeing a portfolio of commercial or residential buildings, HTA offers practical, no-obligation guidance on the most effective investigation methods for your project.

Speak to our experts for planning ahead, reducing risk and unnecessary damage.

Call: 0800 680 0482
Email: testing@hendersonthomas.co.uk