Fire Door Seals

This hub helps you investigate common fire-door faults, identify likely causes and find the right next step. Start with the symptom and its location; do not assume the visible defect is the root cause.

Important: This is diagnostic guidance, not blanket approval to alter a fire doorset. Check the applicable certification or assessment evidence, manufacturer instructions and site requirements before remedial work. Escalate uncertain or significant defects to a competent fire-door professional.

Missing, loose or detached seals Paint, debris and contamination Compression and contact Corners, joints and continuity Intumescent versus smoke seals Replacement and repairability

Choose the fault you need to investigate

Each route groups common symptoms and questions to help narrow the diagnosis. Use the FIX diagnostic tree where the cause is not clear.