Frequently Asked Questions

Technical-legal building expertise is an independent technical investigation of a building condition that may be involved in a claim, disagreement or legal proceeding. The objective is to document the physical condition, analyze available evidence, investigate probable causes and provide technically supported conclusions within the professional’s area of expertise.

It may be appropriate when parties disagree about the cause, responsibility, extent or required correction of a building problem. Common situations include construction defects, recurring water infiltration, concrete deterioration, foundation problems, roofing failures, facade deficiencies and disputes concerning completed repairs.

The technical expert investigates and explains the building condition from a professional perspective. This can involve site inspection, document review, testing, exploratory investigation, analysis of construction details and evaluation of probable causes. Legal conclusions remain distinct from technical opinions.

The expression hidden defect is a legal concept generally associated with a defect that was not apparent under the circumstances and existed within the context relevant to the claim. Whether a particular condition legally qualifies as a hidden defect is a legal determination. A building expert can assess the physical condition, probable cause, extent and technical evidence relevant to that determination.

A technical expert can provide an opinion regarding what the defect is, its probable cause, whether evidence suggests it developed over time, its apparent extent and what corrective work may be required. The final legal characterization of the condition should be distinguished from the technical assessment.

Investigations can involve: Water infiltration Foundation cracking Structural movement Concrete deterioration Roofing deficiencies Building envelope failures Masonry deterioration Waterproofing deficiencies Parking structure deterioration Construction defects Failed previous repairs The investigative approach depends on the condition and available evidence.

A construction defect is a deficiency associated with construction materials, installation, detailing or execution that may affect the intended performance of a building component. Determining the cause generally requires comparison of actual conditions with available project documentation and relevant technical requirements.

Buildings naturally deteriorate because of age, weather, use and material exposure. A technical investigation considers whether the observed condition is consistent with expected aging or whether evidence suggests another mechanism, such as deficient construction, inappropriate detailing, material failure or inadequate previous repairs.

Yes. Maintenance history can be technically relevant when evaluating deterioration. Failed sealants, neglected drainage, deteriorated membranes or deferred repairs may contribute to damage. The investigation should distinguish observed maintenance conditions from other potential causes rather than assuming a single explanation.

Construction disputes can involve different interpretations of the same condition. An independent investigation provides a structured process based on physical evidence, documentation, observations, testing and professional analysis rather than relying solely on the positions of the parties involved.

Depending on the case, relevant documents can include: Construction drawings Plans and specifications Contracts Change documentation Inspection reports Field reports Photographs Maintenance records Previous expert reports Repair invoices Correspondence Product information The available documentation can help establish the history and context of the condition.

Drawings can show the intended construction and provide a technical reference for comparing design information with actual site conditions. They may also identify assemblies, structural components, waterproofing details and interfaces relevant to the investigation.

The investigation can still proceed, but additional field work may be necessary. Measurements, exploratory openings, testing and documentation of existing construction can help establish details that would otherwise have been obtained from the original drawings.

Photographs can document conditions at a specific point in time, including conditions that may later be repaired, demolished or concealed. Dated photographs taken before, during and after construction can be particularly valuable when reconstructing the history of a disputed condition.

Where circumstances permit and immediate safety or damage-control measures are not compromised, documenting the condition before permanent repairs can preserve valuable technical evidence. Photographs, measurements, reports and samples may help establish the original extent and nature of the problem.

Protecting people and limiting additional damage may require immediate intervention. Where practical, the existing condition should be documented before or during emergency work so that useful technical evidence is preserved for subsequent investigation.

Yes. Water infiltration is a frequent subject of technical disputes because the visible damage may be far from the actual entry point. Investigation can involve building-envelope inspection, moisture assessment, controlled water testing, thermography and exploratory openings.

Water can travel through concealed building assemblies before becoming visible. Multiple deficiencies may also contribute to the same leak. A technically defensible investigation therefore attempts to establish the entry point, migration pathway, resulting damage and probable mechanism.

Yes. Roofing investigations can evaluate membranes, flashings, drains, penetrations, parapets, transitions, previous repairs and evidence of water infiltration. Available construction documents and maintenance history can also be reviewed.

Yes. Investigations can address masonry cracking, concrete deterioration, anchors, sealants, water infiltration, movement and previous facade repairs. Where components are concealed, close-up investigation or exploratory openings may be required.

Yes. Foundation investigations can examine cracking, settlement, movement, water infiltration and other visible conditions. Depending on the findings, monitoring, structural assessment or geotechnical investigation may also be appropriate.

Yes. Concrete investigations can address cracking, spalling, delamination, reinforcing-steel corrosion, water exposure and previous repairs. The objective is to understand the deterioration mechanism and its extent rather than simply document damaged surfaces.

Yes. Parking structures can develop disputes involving concrete deterioration, membranes, water infiltration, drainage, joints, reinforcing-steel corrosion and rehabilitation work. The technical investigation can evaluate both the observed damage and contributing mechanisms.

Yes. Recurring deterioration after repair may indicate that the original cause was not fully addressed, that adjacent deterioration continued or that the repair itself did not perform as intended. Reviewing previous repair documentation can be particularly useful.

An exploratory opening selectively exposes concealed construction so that conditions can be directly observed. It can reveal membranes, flashings, reinforcement, anchors, substrates, hidden deterioration and actual construction details.

A disagreement cannot always be resolved from surface observations. When the disputed component is concealed, targeted openings can provide physical evidence that helps determine how the assembly was constructed and how it is performing.

Yes. Depending on the issue, laboratory or field testing may provide information about materials, concrete, moisture, adhesion or other relevant properties. Testing should be selected according to the technical question being investigated.

Yes, where appropriate. Infrared thermography can help identify surface-temperature anomalies that warrant further investigation. It does not see through walls or directly detect water, so thermal findings must be interpreted with other physical evidence.

Yes. Controlled water testing can systematically expose selected envelope components while the interior is monitored. When properly planned, it can help isolate potential leakage paths and provide useful technical evidence concerning the source of recurring infiltration.

Causation refers to the technical relationship between an observed condition and the mechanism that produced it. For example, an investigation may examine whether concrete damage is associated with corrosion, whether water damage results from a flashing deficiency or whether cracking is related to movement.

Visible damage is the consequence of a problem, not necessarily its origin. Replacing stained finishes, deteriorated concrete or damaged masonry without identifying the underlying mechanism may leave the actual cause unresolved.

Yes. Building failures can involve several interacting factors. Water infiltration, for example, may result from a combination of failed sealants, inadequate flashing, movement and drainage conditions. The investigation should consider the available evidence rather than forcing every condition into a single-cause explanation.

Sometimes the available evidence can help establish an approximate chronology, but determining an exact date is not always possible. Construction records, photographs, maintenance history, previous reports and the physical characteristics of deterioration may provide useful indicators.

Understanding when construction occurred, when symptoms first appeared, when repairs were attempted and how conditions progressed can help evaluate competing explanations for a defect and provide context for the technical findings.

A technical expert report documents the investigation, evidence reviewed, observations, methodology, analysis and professional conclusions. Depending on the mandate, it may also identify limitations, recommend additional investigation and describe technically appropriate corrective measures.

A useful report should clearly distinguish observed facts, information obtained from others, technical analysis, assumptions and professional opinions. Conclusions should be supported by the available evidence and remain within the expert’s area of competence.

Yes. Depending on the mandate, an existing technical report can be reviewed in relation to site conditions, available documentation, methodology, observations and supporting evidence. Additional investigation may be recommended where important information is missing or conclusions require further technical evaluation.

Yes. Experts may have access to different information, use different investigative methods or interpret evidence differently. Where opinions conflict, reviewing the underlying observations, assumptions, testing and technical reasoning can help identify the basis for the disagreement.

Yes. Technical experts can work with legal counsel by providing technical investigation, document review, site observations and professional reporting relevant to the building condition. The lawyer manages the legal strategy while the expert remains focused on technical matters.

Depending on the nature of the claim, technical investigation can help document damage, probable causes, affected building components and recommended corrective work. Insurance coverage and entitlement remain separate contractual matters.

Yes. Technical evidence can be relevant to claims involving owners, contractors, subcontractors or other project participants. The expert’s role is to objectively investigate and document the technical condition rather than advocate for a predetermined technical conclusion.

Depending on the mandate and level of design development, the investigation can help define the required repair scope and provide planning-level information concerning corrective work. Detailed construction pricing generally becomes more reliable once plans, specifications and quantities are developed.

Understanding how a defect can be properly corrected helps establish its technical significance and scope. A repair strategy can also distinguish between localized corrective work and more extensive rehabilitation.

No. Identifying a technical deficiency does not, by itself, determine legal liability. Responsibility can involve contracts, applicable law, professional obligations and other evidence beyond the technical condition of the building.

Potentially. A clear technical understanding of the condition, probable cause and required corrective work can help parties and their advisors evaluate the dispute on a more informed basis. Whether this results in negotiation or settlement is ultimately determined by the parties.

The immediate priority should be safety and preventing further damage where necessary. The condition should then be appropriately documented, investigated and evaluated before permanent corrective work is undertaken, where circumstances permit.

Yes. Once the condition and appropriate corrective strategy have been established, the process can progress to plans and specifications, tendering, rehabilitation and construction field review where these services are required.

Important conditions can become visible only during demolition and then disappear once repairs are completed. Field review provides an opportunity to document exposed conditions, observe critical repair stages and maintain a technical record of the rehabilitation work.

Depending on the dispute, the process can include: mandate definition → document review → site inspection → documentation of existing conditions → testing or exploratory openings → technical analysis → evaluation of probable cause → expert reporting → corrective recommendations → additional investigation or rehabilitation planning where required. The objective is to move from allegations and visible symptoms toward documented conditions, physical evidence and technically supported conclusions.

Groupe SCP can combine building-envelope expertise, water infiltration investigation, roofing, foundations, concrete, parking structures, facade assessment and construction field review within a coordinated technical investigation. This multidisciplinary building expertise helps establish the physical condition, investigate probable causes, document relevant evidence and develop technically appropriate corrective recommendations — while clearly distinguishing the technical expert’s role from the legal determination of responsibility.