If its wood you are burning tar on the glass means the wood is
not seasoned so you should not be burning it. The glass in my
woodburner is completely clear apart from a little staining in
the corners and has never been cleaned.
Take a look at
this show my 3 year old stove with perfectly clear glass.
The best option is to not let it get smoked up, this usually means, when
lighting the fire close off the dampers that make the fire "draw" as soon as
the fire is alight and most fires have openings over the top of the glass to
force cold air over the glass and stop it from getting covered in carbon.
If this fails you can buy all sorts of cleaners but a cream cleaner on a bit
of rag works wonders!
Thank you kind gentlemen for your answers, I can see several reasons for my
glass getting blacked up, it could be damp wood cos the wood shed leaks -
another job to be done before the winter - and I sometimes think it has
something to do with the wind direction which would affect the draw, using
damp ash sounds good I will try it. The fire was burning all day yesterday
and the glass is clear so who knows :-)
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