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I've been trying to used Tanalised wood (an old fence) as kindling for our coal fire and it almost seems fire resistant. The bit I set light to burns and then it just self extinguishes, even a fire lighter can't get it to stay alight on its own. Is this normal?
Old fencing panels usually make excellent kindling IME.
Old tanalised stuff had arsenic compounds in so you werent supposed to burn it in open fires etc.
Modern stuff I imagine isnt as bad for you. But thats just an internet guess.
No idea why it wouldt burn unless it was sodden.
It's dry as a bone, but just seems to have self-extinguishing properties, wondered whether it was a side affect of the tanelisation....
That depends upon what it has been treated with, Tanalised is a brand name for a specific treatment but is used as a generic term also. Unless you know what type of chemical treatment has been used I would not use it in an open fire or log burner. Old type treatments used CCA which contains copper and arsenic, safe when locked into the structure of the wood but released upon incineration. So, unless you know the provenance of the timber treatment I would use untreated timber.
Well any fumes are going up the chimney, so I'm not that bothered about what it's been treated with.
I wouldn't burn anything tanalised, it lets off arsenic.
Nasty fumes can and do (IME) get back into the room. Not worth the risk. FWIW coal/log burners are as likely to let off CO due to inefficient burning/leaking combustion chambers etc as gas or combi boilers etc.