When employing the services of a Fire Door Inspector please make sure they are qualified. If you employ someone who is an FDIS Approved Inspector you can be sure that they know what they are doing. An FDIS Inspector has had to pass a Diploma in fire doors and then they have had to pass an on site assessment with an independent third party assessor testing them on their knowledge of fire doors and assessing how they inspect fire doors. There are fire door inspectors out there that have just taken a one day course, which in our opinion is nowhere near sufficient. We have used an App that these assessors use and in our opinion it does not cover half of the stuff you need to be looking at. Be safe and be sure to employ someone who is suitably qualified. Please don’t just go for the cheaper option as it may cost you a lot more in the future.