Fitting Fire Doors
30 minute Fire door being Routered and being prepared for fitting in mobile workshop, please note, Nice straight rebate for fitting cold smoke intumescent seal.
Fire Door fitting does require a certain level of knowledge to fit a Fire door to conform to the current legislation and be compliant, the specification is covered in various parts of British Standard 476. A useful start is most Door manufacturers supply Fire Door fitting instructions with each Fire Door and some on their websites.
This usually covers the fitting of various door furniture that can or cannot be used. Also just as importantly is the Door Frame/Liner which needs to be to the specification of the Door manufacturer and/or the Building Control department. Also how little a door can be trimmed by. Once all that is decided on, the fitting and how the door operates becomes the most important issue.
The door liner should be fitted so that there are no cavities behind the liner, top and both sides. When the Door is fitted to the liner, there should be an equal gap all around of about 3mm with a maximum clearance between the bottom of the door and the floor surface of 8mm. The fitting of the Cold Smoke Intumescent seals is crucial.
The smoke brush seal must seal on the door liner without stopping the door closer from closing the door and latching. A good test is running a credit card between the door and liner. If it jams the Cold Smoke Intumescent seal is standing too proud and the door will not close and latch without the closer being adjusted to slam hard which of course is dangerous to Staff and Clients (especially Children) plus over the course of time it will damage the door liner. If the credit card falls out then there is no barrier to smoke passing the door. With the aim of Fire Safety being to contain fire and smoke where it occurs for a specified time (usually 30 or 60 minutes), with smoke usually being poisonous it is vital to hold back the smoke to where it is occurring.