Use of rubber underlay in the loft?

[peteuk]

Hello,
We are changing carpets and as per advice we are changing the underlay too.
The underlay that we are replacing is the thick rubber type and is in good condition - I could have saved a few pennies methinks.
Anyway it's lifted now and I was going to use it as loft insulation.
But my wife was told today that it is unsuitable because it's a fire risk - and then poisonous if it does catch fire.
Does anyone know if this is right?
I've searched on here and further afield but can't see any mention of anyone doing it or declaring it a safety risk
Thank you for your support as usual,
Pete

 

[endecotp]

Try setting fire to a bit. (Outside.)

 

[peteuk]

LOL, like your thinking.
I'm sure it will burn if I actually set it alight but the inference my wife was given was that the heat in the loft could cause it to catch fire by itself.
I'm sceptical.
Maybe I should test in the sunshine with a magnifying glass but that would be more intense than the roof space on a hot day I think.
Anyone else have an opinion? Cheers, Pete

 

[endecotp]

my wife was given was that the heat in the loft could cause it to catch fire by itself.
I'm sceptical.

That is not a concern unless your wife - or whichever friend gave her that advice - is using your loft to grow canabis plants under heat lamps and hasn’t told you.

 

[peteuk]

Thank you, I appreciate your advice, and humour,
Pete