Service
Construction Materials Expert Witness for Materials Failure and Durability Disputes
Independent evidence on how construction materials were made, how they performed and why they deteriorated — for arbitration across the GCC and proceedings in the DIFC Courts, ADGM Courts, QICDRC and BICC.
- DIAC
- arbitrateAD
- SCCA
- QICCA
- BCDR
- DIFC Courts
- ADGM Courts
- QICDRC
- BICC
Concrete that cracks or spalls years too early, reinforcement that corrodes, welds that fail, stone that stains or delaminates — materials disputes turn on science. The questions are precise: what was the material's composition and quality, was it as specified, how was it placed and protected, and what mechanism caused it to deteriorate?
The Gulf is one of the most demanding environments in the world for construction materials. High temperatures affect concrete placing and curing; chlorides and sulphates in ground, groundwater and sea air attack concrete and steel; intense UV and thermal cycling degrade polymers, coatings and stone. Durability failures that would take decades elsewhere can appear within a few years.
A construction materials expert witness investigates those failures on the evidence — from site records to laboratory testing — and explains to the tribunal what happened and why. We act on buildings, infrastructure, marine, industrial and energy projects across the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain and Oman.
What a construction materials expert witness does
A construction materials expert is a materials scientist or engineer who gives independent opinion evidence on the properties, performance and deterioration of construction materials. That means:
- Establishing the specification — what the contract and standards required of the material, and how compliance was to be demonstrated.
- Testing what was supplied and placed — designing a sampling and laboratory testing programme to establish the material's actual properties.
- Identifying the deterioration mechanism — chloride-induced corrosion, carbonation, sulphate attack, alkali-aggregate reaction, thermal damage, fatigue and other mechanisms.
- Tracing the cause — whether the problem lies in the material itself, its mix design or manufacture, its placing and curing, the design exposure class, or the conditions in service.
- Assessing remaining life and remedy — how the deterioration is likely to progress and what repair or protection is appropriate.
“Our overriding duty is to the tribunal or court, not to the party who appoints us.”
Materials issues we advise on
Concrete quality and compliance
Strength, mix design, cover, compaction and curing — including the effects of hot-weather concreting and disputes over failed cube or core results.
Concrete durability
Chloride ingress, carbonation, sulphate attack and other deterioration mechanisms in buildings, basements, foundations and marine structures.
Reinforcement corrosion
The cause and extent of corrosion in reinforced and post-tensioned concrete, and the adequacy of cover and protection.
Structural steel and welding
Material grades, weld quality, fabrication defects, fatigue and corrosion of steel structures and connections.
Masonry and blockwork
Block quality, mortar, cracking and moisture-related deterioration of masonry walls.
Natural stone and cladding materials
Staining, cracking, delamination and fixing failures of stone and other cladding materials.
GRC, GRP and composites
Performance and degradation of glass-fibre reinforced concrete, plastics and composite materials in high-UV environments.
Asphalt and pavements
Rutting, cracking and premature failure of road, airfield and hardstanding pavements, and the materials and mix designs used.
Aggregates, sand and fill
Quality and suitability of aggregates, sands and fill materials, including contamination with salts.
Testing evidence disputes
Review of disputed laboratory and site test results, testing procedures, sampling and chain of custody.
Materials or products?
Materials and products disputes overlap, but the evidence differs. A materials dispute is usually about the properties and behaviour of a material such as concrete, steel or stone, often produced or mixed for the project. A products dispute is usually about a manufactured, branded system — a membrane, a sealant, a façade system — and the manufacturer's claims for it.
Many disputes involve both. We coordinate materials, product, structural and quantum evidence so that the mechanism of failure, the remedy and the cost tie together.
RelatedConstruction Products Expert Witness →Structural Expert Witness →Quantum Expert Witness →
How an engagement works
- 1
Conflict check and initial call
A short, confidential conversation about the materials, the failure, the parties and the timetable. We complete a conflict check before receiving any documents.
- 2
Scope and letter of instruction
We agree the technical questions, the documents and samples required, and the programme and fee basis.
- 3
Records review and site inspection
We review specifications, mix designs, supplier and test certificates, placing and curing records, then inspect the affected elements.
- 4
Sampling and laboratory testing
A proportionate sampling and testing programme with chain-of-custody controls, agreed with the opposing expert where possible so that results are not later disputed.
- 5
Expert report
An independent report setting out the required properties, the test results, the deterioration mechanism, the cause and the appropriate remedy.
- 6
Joint meetings and the hearing
Meetings with the opposing expert, a joint statement of agreed and disagreed issues, and oral evidence at the hearing.
Independence and professional standards
Our evidence is prepared to meet the expectations tribunals and courts place on experts in the region, including:
- the IBA Rules on the Taking of Evidence in International Arbitration (2020), where adopted;
- the CIArb Protocol for the Use of Party-Appointed Expert Witnesses in International Arbitration;
- the procedural rules of the relevant arbitral institution, such as the DIAC 2022 Arbitration Rules; and
- the expert evidence requirements of the DIFC Courts, ADGM Courts, QICDRC and BICC.
Every report includes a declaration of independence and a statement of the expert's duty to the tribunal or court.
Where we act
Arbitration
Institutional and ad hoc arbitrations across the GCC, including DIAC (Dubai), arbitrateAD (Abu Dhabi), SCCA (Saudi Arabia), QICCA (Qatar), BCDR (Bahrain), KCAC (Kuwait) and OAC (Oman), as well as ICC and other international rules with a GCC seat or GCC project.
Offshore courts
DIFC Courts (including the Technology and Construction Division), ADGM Courts, the Qatar International Court and Dispute Resolution Centre, and the Bahrain International Commercial Court.
Where we act: independent expert witness services in arbitration across the GCC and in the DIFC Courts, ADGM Courts, QICDRC and BICC. We do not provide expert evidence in onshore court proceedings.
View all GCC locationsSectors
- Residential and commercial towers
- Infrastructure and bridges
- Roads and airfields
- Rail and metro
- Marine and coastal structures
- Ports
- Industrial and process
- Energy and utilities
- Water and wastewater
Who we work with
For lawyers and in-house counsel
Materials evidence is technical and testing-heavy, and disputes over test results can derail a case. We design robust sampling and testing protocols, explain the science in terms the tribunal can follow, and give evidence on mechanism and cause that maps to the pleaded case.
Discuss an instructionMaterials evidence is technical and testing-heavy, and disputes over test results can derail a case. We design robust sampling and testing protocols, explain the science in terms the tribunal can follow, and give evidence on mechanism and cause that maps to the pleaded case.
Discuss an instructionWhat you receive
- An early, candid view of the likely deterioration mechanism and cause
- A proportionate sampling and testing plan with chain-of-custody controls
- A clear, independent report with test results and reasoning the tribunal can follow
- An opinion on remaining life and the appropriate remedy
- A joint statement with the opposing expert that narrows the issues
- Clear, consistent oral evidence under cross-examination
Frequently asked questions
Need a construction materials expert witness?
Tell us about the materials, the failure, the forum and the timetable. We'll complete a conflict check and come back to you promptly.
Discuss an instructionPlease do not send confidential documents until a conflict check has been completed. Where possible, preserve affected material until samples have been taken. If deterioration raises a safety concern, contact the relevant authority and a structural engineer without delay.