Fire Door Safety Week runs 22–26 September – a good prompt to properly check the door most people on your site walk past without a second thought. Fire doors rarely fail overnight; closers weaken, seals perish, hinges sag and gaps widen until an inspection flags it, or worse, a fire does. Here's what we check on every site visit, why a door that looks fine may not do its job, and how to catch problems early before they become a safety, compliance or insurance issue.