[Cob] Thermal nosebleed >Cob and Cobwood hybrid

[Taylor Publishing-DirtCheapBuilder]

it would be cordwood, definitely
with cob as the mortar glue.


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One thing to remember with cordwood is the problem with "thermal 
nosebleed"...when the wood or mortar shrink away a little bit and  allow 
cold drafts to enter alongside the wood gaps, and your heated interior 
air to escape, this wasting fuel.

   This can be combated with double wall cordwood I hear, but this means 
insulating in the middle, and making  two  cordwood  walls.  Some people 
plaster over the entire outside, or inside I understand to solve this 
problem. If you like the round end log look inside then the outside 
plaster  will cover up the look there too.

 there are several wall systems, described in the cordwood books,  which 
help prevent the nosebleed, but it is something to keep in mid for 
novice builders.

So if the cob mortar does not shrink, but the wood does, slightly, then 
you wind up with a problem, sometimes hard to locate where in the house 
the energy loss is.

my 2 cents for the day (g)


Ms. Charmaine  Taylor/ Taylor Publishing
PO Box 375, Cutten   CA 95534 707-441-1632    books at dirtcheapbuilder.com
 http://www.dirtcheapbuilder.com    http://www.papercrete.com