Perform

Definition and Technical Application#

In the context of the UK external wall industry, the term "perform" serves as a fundamental verb describing the execution of specific technical duties, assessments, and physical functions. In its most basic sense, to perform is to carry out a function or action, such as an inspection or a test. Within the professional sphere of cladding and remediation, this extends to two distinct but related areas: the active conduct of professional services and the passive functionality of a building’s external envelope.

When a competent professional is instructed to perform a service, it refers to the systematic application of industry-standard methodologies. This might include performing a non-destructive site survey, performing a borescope investigation, or performing a laboratory analysis of materials retrieved from a facade. The term implies a level of rigour and adherence to established protocols, such as those set out by the Institution of Structural Engineers or the Royal Institution of Chartered Surveyors (RICS).

The External Wall System and Functional Performance#

Beyond the actions of human agents, "perform" is used to describe how an External Wall System (EWS) or its individual components react under specific environmental or situational stresses. A cladding system is designed to perform a range of roles simultaneously, including weatherproofing, thermal insulation, and fire resistance. The interaction between these components—such as the cavity barriers, insulation, rails, and outer rainscreen panels—dictates how the system performs as a singular unit.

For example, when assessing the building fabric, engineers evaluate how the system performs in relation to moisture management. This involves looking at how the drainage and ventilation cavities function to prevent interstitial condensation. If a system fails to perform its intended role, it may lead to long-term degradation of the structural substrate. In this context, performance is not a subjective measure but a technical comparison between the system’s current state and its original design intent or the relevant British Standards (BS) applicable at the time of construction.

Regulatory Context in England and Wales#

The regulatory framework in England and Wales, significantly updated by the Building Safety Act 2022 and the Fire Safety Act 2021, places substantial emphasis on the requirement to perform specific safety-related duties. For "higher-risk buildings" (typically defined as those at least 18 metres high or with at least seven storeys), there is a statutory requirement for the Accountable Person (AP) or Principal Accountable Person (PAP) to perform ongoing assessments of building safety risks.

Under the Building Regulations, specifically Approved Document B (Fire Safety) and Approved Document L (Conservation of fuel and power), materials are required to perform to specific classifications. The process of demonstrating this often involves performing a series of standardised tests, such as those defined in BS 8414 (fire performance of external cladding systems). The regulatory context necessitates that these actions are performed by individuals with the appropriate level of competence, ensuring that the data gathered is robust enough to inform a Building Safety Case.

Professional Obligations and Service Execution#

In the lifecycle of cladding remediation—from initial discovery through to the completion of works—various stakeholders must perform distinct technical roles. A fire engineer may be required to perform a qualitative assessment of the risk to life, while a quantity surveyor performs a cost-benefit analysis of different replacement materials.

The execution of an EWS1 (External Wall System Fire Review) survey is a primary example of performing a high-level professional service. The process requires the signatory to perform a physical inspection (where possible) and a review of the design documents to provide an informed opinion. It is important to note that the act of performing an inspection does not, in itself, guarantee a specific outcome; rather, it is the mechanism by which the necessary evidence is gathered to satisfy lenders, insurers, and the Building Safety Regulator.

Considerations for Building Owners and Managers#

Building owners, managing agents, and Directors of Resident Management Companies (RMC) or Right to Manage (RTM) companies must understand that "performing" a duty is often a non-delegable responsibility in the eyes of the law, even if the physical task is outsourced to a contractor. When commissioning works, these stakeholders must ensure that the scope of work clearly defines what the contractor is expected to perform.

Effective management involves verifying that the appointed professionals have performed their duties in accordance with the contract and the relevant British Standards. This includes ensuring that site inspections are performed at critical stages of a recladding project, such as before the outer panels are fixed, to confirm that the internal components have been installed correctly.

Common Misunderstandings#

A frequent misunderstanding regarding the term "perform" relates to the distinction between a material's theoretical performance and its as-built performance. A product may perform exceptionally well in a controlled laboratory test (such as a small-scale combustibility test), but the overall system may perform differently when installed on a building due to variations in workmanship, the presence of specific fixings, or the size of the ventilation cavities.

Another point of confusion involves the frequency with which certain actions must be performed. There is often a misconception that a single inspection performed at the point of sale or during a five-year fire risk assessment is sufficient for the lifetime of the building. However, the current UK regulatory trajectory suggests that performing safety checks is an iterative process, requiring periodic re-evaluation as building components age or as new guidance is released by the Department for Levelling Up, Housing and Communities (DLUHC).

Related Terminology and Technical Nuance#

The term "perform" is closely linked to several other industry-specific concepts:

• Competence: The combination of skills, knowledge, experience, and behaviours required to perform a task safely and effectively.
• Commission: The formal act of instructing a professional to perform a specific service or assessment.
• Remediation: The overarching process of rectifying defects, within which various technical tasks must be performed.
• Mitigation: Actions performed to reduce the severity of a risk, often implemented as an interim measure while awaiting permanent cladding replacement.
• Validation: The process of ensuring that the actions performed meet the required regulatory benchmarks and design specifications.

In technical documentation, the choice of the word "perform" over less precise terms like "do" or "make" underscores the formal and systematic nature of the work. Whether it is a material performing under load or a surveyor performing an intrusive investigation, the term denotes a measurable and evidence-based approach to building safety and maintenance.