I recently ran an enquiry here about using a moisture meter for
checking the moisture level in wood for a wood burning stove.
There wasn't much help offered - in fact there was a degree of flack
about wasting effort and money.
Well, I think that is worth feeding back what I am finding.
The first thing is this quote from the website of a wood burning stove
Most types burn well provided they are properly
seasoned with a moisture content below 20%.
NOTE.- It is bad practice to burn recently felled timber or
wood that is wet. The heat output will be poor and it will
cause excessive tar deposits to form in the chimney. "
I was questioned in the original thread over my statement that the
flue had blocked possibly because of damp wood being burnt. I think
that statement is now justified - the caveat is the 'possibly' but
this is clearly stating that the tar level will go up if the wood
isn't dry enough.
The quote also gives a baseline figure for acceptable moisture
I bought a cheap two pin digital read-out moisture meter off Ebay. I
used it to check the moisture level of a stack of well seasoned (5
years old most of it) pile of logs stored in an open, roofed, log shed
and found a consistent level of 18% at the surface of the wood. I
then cut up several of these logs and found that the moisture level
was 18% throughout.
I then investigated the beech that I have recently been logging - this
is off a tree that died 15 months, fell 11 months ago and was cut up
in May. It's moisture level is 25% currently and again is consistent
throughout each log.
For a tenner this has given me valuable information and reassurance.
I don't apologise for now thinking two fingers to the naysayers.
- posted 12 years ago