25
Apr

Don’t play with fire

Dont Play with Fire!

This video shows 3 different doors tested under the same conditions. Door A – incorrectly glazed: Door B – correctly glazed and installed: Door C – ordinary letter plate and no intumescent seals. When installing or maintaining fire doors you MUST use 3rd-party certificated doors such as Masterdor, although these doors are fire rated 30, take a look at the next video which shows a Masterdor FD60.

don’t cut corners, consider the consequences if you do!

So Why fire doors are so important?

A fire door is one of the most important fire safety products on your premises. It will prevent the fire or smoke from spreading across the building and keep the fire contained to a particular compartment or room, giving occupants longer to escape and the fire service longer to rescue anyone who is trapped and put out the fire. They will also prevent more of your building and property from being lost to the fire than necessary.

Buildings are compartmentalised to delay the spread of fire from one area to another. These compartments are usually linked by fire doors to allow the flow of traffic around the building. Fire doors have two important functions in a fire; when closed they form a barrier to stop the spread of fire and when opened they provide a means of escape.

A well designed timber fire door will delay the spread of fire and smoke without causing too much hindrance to the movement of people and goods.

Every fire door is therefore required to act as a barrier to the passage of smoke and/or fire to varying degrees depending upon its location in a building and the fire hazards associated with that building.

The main categories of fire doors are FD30 and FD60 fire doors which offer 30 and 60 minutes fire protection.

Certification testing of timber fire doors

To determine the FD rating of fire doors, the manufacturers are having fire doors assessed by subjecting them to a test procedure specified in BS 476-22 or BS EN 1634-1. Tests are made on complete door assemblies: ie. the fire door and doorframe with all the requisite hardware (e.g. locks, latches, hinges, etc). The assembly, or doorset, as it is also known, is fixed in a wall representing its use in practice. It is important that the actual frame to be used is tested as well as, should a door be tested in one type of frame and then used in another, no guarantee could be given of its performance under fire conditions. The test procedure is fully described in the Standard and consists of exposing one face of the door to the heat conditions anticipated in a fire while observing the door for stability and integrity. The Standard requires the tests to be carried out with the upper part of the door under a small positive pressure, to simulate the conditions likely to occur in a fire. It also provides an objective method of establishing the loss of integrity of a fire door by the use of a combustible fibrous pad on the unexposed side of the door to see when it ignites. As a fire door should be tested from each side to establish its performance with either face exposed to fire conditions, two specimens are required. It is reasonable to assume that all fire doors and door-frames manufactured to the same specification as the two specimen doors and frames will achieve the same fire resisting properties.