Can anyone recommend a downlight that is suitable for installation in a flammable ceiling?

My client would like one fitted in a UPVC clad porch ceiling, and the downlights I usually fit (Aurora EFD Pro's) aren't suitable for this. Struggling to find easily accessible manufacturer's info on this.
 

So those are fire rated and also carry the F mark according to the spec




These on Screwfix are fire rated but the q+a says not suitable for flammable surface
 
In no way is the cladding flammable but it may be combustible. The chances of a downlight generating sufficient heat that the material releases gasses which is the combustible component of the product is extremely low. Modern cladding is manufactured so it doesn't promote the spread of fire.
 

So those are fire rated and also carry the F mark according to the spec




These on Screwfix are fire rated but the q+a says not suitable for flammable surface
Thanks. I don't think fire rated is necessary in this instance, but a nice-to-have. Surprised that that one has the F mark, it is GU10 so halogens could be used in it, which I assumed would be a problem
 
In no way is the cladding flammable but it may be combustible. The chances of a downlight generating sufficient heat that the material releases gasses which is the combustible component of the product is extremely low. Modern cladding is manufactured so it doesn't promote the spread of fire.
Pardon my ignorance, but what is the difference? The internet dictionary definitions I have looked at seem to used the words interchangeably.
 
Pardon my ignorance, but what is the difference? The internet dictionary definitions I have looked at seem to used the words interchangeably.
I do a lot of fire risk assessments and the difference is important. An easy way to see is petrol and diesel, people would assume they are both flammable but only petrol can be described as such. Petrol in its liquid state will not burn it is not possible it is the vapour which burns vapour which is readily given off at most temperatures hence it is flammable. Diesel is combustible as it needs to be produced for want of a better word for it to vaporize in other words it must be heated, throw a match a diesel nothing happens but throw a match at petrol and the vapours will ignite.
Chip pan fires are a good example of a combustible source, the oil once at sufficient temperature will vaporize from the pan to the naked gas flame. Liquids do not burn as there is an absence of oxygen, one of the elements required for ignition it is only once vaporization takes place and it mixes with oxygen you can get a fire. Fuel, heat and oxygen remove any one of these and the fire is extinguished and this is the principle of fire suppression.
Solids such as plastic and wood are all combustible because a process must first take place to release the gases.
 
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I do a lot of fire risk assessments and the difference is important. An easy way to see is petrol and diesel, people would assume they are both flammable but only petrol can be described as such. Petrol in its liquid state will not burn it is not possible it is the vapour which burns vapour which is readily given off at most temperatures hence it is flammable. Diesel is combustible as it needs to be produced for want of a better word for it to vaporize in other words it must be heated, throw a match a diesel nothing happens but throw a match at petrol and the vapours will ignite.
Chip pan fires are a good example of a combustible source, the oil once at sufficient temperature will vaporize from the pan to the naked gas flame. Liquids do not burn as there is an absence of oxygen, one of the elements required for ignition it is only once vaporization takes place and it mixes with oxygen you can get a fire. Fuel, heat and oxygen remove any one of these and the fire is extinguished and this is the principle of fire suppression.
Solids such as plastic and wood are all combustible because a process must first take place to release the gases.
Thanks for this very detailed reply @westward10 . There is still a question mark hovering in my mind though - what, in the context of fitting downlights, would be considered a flammable material? Would this be polystyrene ceiling tiles for example?
 
Thanks for this very detailed reply @westward10 . There is still a question mark hovering in my mind though - what, in the context of fitting downlights, would be considered a flammable material? Would this be polystyrene ceiling tiles for example?
Again they are combustible. I think when it comes to building materials flammable is not going to be an issue they would just not be used.
 
Looks that way to me

"Carrying an 'F' mark, this fitting can be mounted onto a normally flammable surface, which includes standard building materials such as plasterboard, masonry and wood. Easily flammable surfaces such as polystyrene are incompatible."


Seems according to the description and the above discussion that F means suitable for combustible .but not flammable ie: polystyrene
 
Looks that way to me

"Carrying an 'F' mark, this fitting can be mounted onto a normally flammable surface, which includes standard building materials such as plasterboard, masonry and wood. Easily flammable surfaces such as polystyrene are incompatible."


Seems according to the description and the above discussion that F means suitable for combustible .but not flammable ie: polystyrene
Makes sense. Thanks @Mikegh
 

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Downlights for flammable surfaces
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