Cob RE: cold frame with cob walls.

[Jackie Range]

Hello Fellow Humans,
I have been reading the coblist for months now and I have a little something to
say:
Last weekend we built a cold frame for our vege seedlings.  The temp was still
too cold inside so we mixed soil and a couple of handfuls of straw together (wet)
and made a wall around the cold frame.  It has been raining constantly so the mud
cannot dry so we covered the walls with plastic so that the mud would not wash
away.  How many days of sunlight are required to dry the wall?  Did we do the
right thing?
Our next timid experiment will be to build a very large dog house out of cob.
Has anyone ever done this?  How does one protect the walls once dry?
Thank you
Jackie