I have a chimney which seems to have a hole just below the bedroom floor
allowing smoke to go into the bedrooms. I can't reach into the
brickwork as there're timbers in the way but I was thinking maybe
fireproof expanding foam would do the job. All I can find in the diy
places are foams which go upto 60C. Would this be enough or do I need
some sort of specialist fireproof expanding foam? Any ideas where I
would get it as the net is just giving me mail order places where the
postage is as much as the product.

TIA
--
John Kelly

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