Reused material: how can material expertise help secure liability and insurability?

Reusing materials in the construction industry serves economic and environmental goals, but it also transfers part of the technical uncertainty to all project stakeholders: the client, the inspection office, the contractor, the designer and the insurer.

Without reliable data on the material’s actual condition, its intrinsic performance, any contamination, ageing or hidden defects, the decision to reuse remains a blind risk. To remove reservations, fitness for use must be demonstrated through an independent expert assessment based on analytical traceability and tests adapted to the future function of the reused product or element.

In a reuse file, the main obstacle is not the intention to reuse, but the lack of evidence.

A dismantled material may present compositional heterogeneity, mechanical fatigue, microcracks, surface alterations, treatment residues, external contamination or degradation invisible to the naked eye. As long as these parameters have not been investigated, the insurer will view the situation as a potential loss exposure and the inspection office as being unable to validate the intended use. Fitness-for-use validation therefore requires measured, traceable and interpreted data.

The characterization of residual performance is not based on a single test, but on a combination of investigations adapted to the material and its future function.

Depending on the case, it may be necessary to identify the composition, look for contaminants, assess the surface condition, detect internal defects, study a failure, measure leachable substances or compare the sample with a reference state. The laboratory can thus build a tailor-made reuse testing protocol, proportionate to the technical and insurance-related stakes of the project.

In the construction industry, the question is not only whether a material can be reused, but whether that reuse can be justified, traced and defended in the event of a dispute or loss.

An independent laboratory provides a neutral reading of the technical facts, with results obtained through controlled methods and a documented analytical chain. This independence strengthens the credibility of the file with decennial liability insurers, damage insurance insurers, inspection offices and lawyers involved in risk analysis.

An independent laboratory provides the level of evidence expected in sensitive reuse cases: material identification, search for alterations, chemical and physico-chemical characterization, failure analysis, surface examination, detection of contamination or leaching, and definition of a reuse testing protocol adapted to the site context.

This approach makes it possible to document residual performance, define limits of use and provide technical conclusions that can be used by technical inspectors and insurers. Expertise then becomes a lever for decision-making, contracting and risk control. Expertise costs nothing compared with the price of an uncovered loss.

The laboratory’s role is to produce a genuine technical “health certificate” for the material. This involves a sampling strategy, targeted analysis and a clear report: material type, state of preservation, observed defects, substances detected, expected behaviour in relation to the intended use, any reservations and recommendations. This approach facilitates dialogue between the client, project management, technical control and insurance by providing a common factual basis rather than a declarative assessment.

Available methods include scanning electron microscopy with EDX microanalysis for observing defects, crack initiation points or heterogeneities, spectroscopic and chromatographic analysis to identify the chemical nature of the materials and substances present, as well as physico-chemical investigation tools to study the surface, deposits, ageing or contamination phenomena. The value of this instrumental approach lies in linking analytical observations to an operational conclusion on fitness for use.

Support is not limited to producing raw results. It also involves helping project stakeholders ask the right questions, prioritize tests, interpret observed discrepancies and frame the limits of use.

Thanks to its PhDs and engineers, its expertise resources and its operation as an ISO 17025 accredited laboratory for certain services, FILAB positions itself as a project facilitator capable of objectifying decisions and moving reuse operations forward in a safer framework.

Material expertise should ideally be engaged as soon as the resource assessment, selective stripping, or preselection of elements for reuse begins. Early intervention helps avoid late technical dead ends, guide sorting, define useful sampling, and anticipate the expectations of inspectors and insurers.

It is also relevant in cases of doubt, non-compliance, disputes, or blocked files. For project stakeholders, the goal is simple: secure, characterize, document, justify and unblock before an unqualified risk becomes a claim or a denial of coverage.