On Sat, 17 Sep 2005 13:52:15 -0400, with neither quill nor qualm,
"George Willer" quickly quoth:


R values are less important when you are talking about log homes because
of the greater thermal mass. The logs just don't change temperature that
quickly. Slow to heat up, slow to cool down. 10" to 12" is sufficient, and
if properly constructed, there is no air flow through the wall. Forget R
value when talking log.
--
Steve Spence

Why forget about the loss? Because it upsets the misguided who think log
homes are a good idea? By your reasoning a medieval castle wouldn't be
difficult to heat because of the thermal mass. POPPYCOCK!

Someone tell Steve the R-value of logs is quite low.
http://www.eere.energy.gov/consumeri...heets/ca8.html

"The R-Value of Wood

An R-value (Btu/ft2/hour/oF) is the rating of a material's resistance
to heat flow. The R-value for wood ranges between 1.41 per inch (2.54
cm) for most softwoods to 0.71 for most hardwoods. Ignoring the
benefits of the thermal mass, a six inch (15.24 cm) thick log wall
would have a clearwall (a wall with no windows or doors) R-value of
just over 8. Compared to a conventional wood stud wall [3? inches
(8.89 cm) insulation, sheathing, wallboard, a total of about R-14] the
log wall is apparently a far inferior insulation system. Based only on
this, log walls do not satisfy most building code energy standards."