Before we go too far into the topic let’s first talk about why we have fire doors and how much they actually help with fire safety.

Fire doors are an essential part of fire safety and being able to have a good fire strategy plan. They can only achieve this if they are closed, the reason for this is due to how they are designed and how they are meant to work. The main feature of a fire door that grants them the high fire rating is the intumescent strips that line the doorframe. When those strips detect heat, an abnormal level of heat, they expand and seal the doorway completely which can slow down the spread of fire in a building significantly since the fire will have to burn through the door first. Fire doors are also designed to be a lot thicker than a standard door, so they will take longer to burn.

Now it’s a bit easier to understand why you should keep these doors closed at all times, because if they aren’t closed, they can’t do their jobs at all and a fire could spread much quicker. So, if you do see any kind of fire door being held open by anything at all you should always make sure to get rid of that obstruction so the door can close and properly serve its purpose.