[Cob] Ivy on cob walls

[Amanda Peck]

I think I'd try it on something else first.  Standard advice on vines 
growing up, say, brick walls is that they might look great but the little 
roots can degrade the mortar.  And while they might prevent driving rain 
from hitting your wall, would they then prevent the wall from drying out 
nicely?  See what happens after a couple of years on the back of a cob bench 
before you plant at the base of your house?

...............
   I was trying to think of alternate ways to protect cob walls from the
elements.
Can anyone think of any possible problems if you lime rendered your walls
and then let ivy grow all the way up?
    I would think the ivy would keep potential rain from touching the cob,
thus it would never really get wet, and if it did, the lime render would
protect it.  Just another layer of protection and would probably look cool
with a living roof.

Scott


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