Hidden spaces.
Critical details.

Understand concealed cavities and the different roles of fire-protection components.

• Explain why concealed routes need attention.
• Distinguish cavity barriers, closers, insulation and penetration seals.
• Recognise open-state and closed arrangements.

Connect project requirements to clear responsibilities and decisions.

• Identify jurisdiction, applicable guidance and current project information.
• Distinguish design, installation, inspection and training evidence.
• Allocate interface responsibilities and record decisions.

Compare actual construction with product-specific evidence.

• Distinguish product, test, classification and installation information.
• Check supporting construction, orientation, geometry and interfaces.
• Control substitutions and out-of-scope conditions.

Make the barrier layout buildable, traceable and inspectable.

• Read elevations, sections and interface details together.
• Coordinate rails, brackets, services and construction sequence.
• Use first installations and hold points effectively.

Check the support, cavity, fixing and movement conditions.

• Identify the actual supporting construction and its condition.
• Record cavity geometry and relevant fixing requirements.
• Recognise movement, storage and protection questions.

Understand masonry-cavity and opening-surround interfaces.

• Distinguish ordinary closers from evidenced combined products.
• Coordinate barriers with trays, drainage and other moisture functions.
• Check joints and opening interfaces before concealment.

Understand open-state operation within ventilated façades.

• Separate total cavity width from the designed residual gap.
• Check active edges, opposing faces and product orientation.
• Preserve the coordinated ventilation, drainage and fire arrangement.

Follow continuity through joints, corners and terminations.

• Review horizontal and vertical arrangements using their own evidence.
• Identify unsupported joints, interruptions and abutments.
• Record the actual connection rather than separate straight lengths.

Recognise interfaces at windows, roof voids and other façade systems.

• Distinguish cavity treatment from compartment and curtain-wall junctions.
• Identify roof, opening and internal-void coordination questions.
• Control the effect of attached elements and changed openings.

Plan inspections and obtain useful evidence while work is visible.

• Define readiness, installation and pre-concealment checks.
• Take location-linked photographs with clear evidential limits.
• Separate inspection, release, acceptance and defect closure.

Manage defects and changes through supported corrective work.

• Record the current condition and its limitations.
• Plan repair, access and reinstatement through the responsible teams.
• Preserve history and verify later alterations.

Create usable handover information and resolve four location-based decisions.

• Link actual locations to current evidence and status.
• Keep missing evidence and alterations visible at handover.
• Plan future work using the installed-system record.