Harry Stottle coughed up some electrons that declared:

"Tim S" wrote in message
.. .
One more (ta in advance and all that)

I have to render the inside of a fireplace, in order that a wood/coal
burning iron stove can go in later.


An old plasterer told once me the best way to neutralise soot, and get it
to accept plaster, is to mix cow dung with water in a bucket and paint it
on. Just searched to see if this was true, and found the following link:-
http://www.greenbuildingforum.co.uk/...scussionID=288


Fascinating! I'm almost tempted - plenty of cows round here, somewhere...