Fire-rated downlights are designed as a safety measure and will help the spread of fire. If you’re doubtful about whether you need to install them or not also suppose about the small quantum of the cost that’s involved also consider what and why they’re designed to do.
Fire-rated downlights are made from or contain intumescent material, this material expands when it reaches a certain temperature sealing off the hole and slowing down the spread of fire. The fire is also incapable to have direct access to the structure of the structure.
Fire-rated downlights are used to maintain the ceilings’ fire integrity. Part B of the Building Regulations covers fire safety and has been a legal demand since 1987. Not all downlights have to be fire-rated but it’s important to know when and where they should be used. For more information visit LIGMAN.
When a recessed downlight is installed, a hole must be cut into the ceiling to allow the downlight to be mounted in. This hole reduces the fire integrity of the ceiling. In the event of a fire, flames spread through the holes and set light to the structure. Utmost ceilings are constructed from timber joists which in the event of a fire, could burn and collapse in a matter of seconds. If the structure of the structure is made from materials with advanced temperature conditions similar to concrete also fire rated downlights aren’t necessary.
When downlights are being installed in upper bottom ceilings with roof space only above them they do not unavoidably need to be fire rated. This is because there’s little threat of the fire spreading through the holes and onto the structure. Still, fire-rated downlights have numerous other advantages. They’re also approved to other important Structure Regulations similar as Part C- humidity protection, Part E-acoustic resistance.