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Three
good questions
1. How long can you let
the
scratch coat sit before covering with the brown coat? Is there a
problem
in letting the scratch coat sit for 30 or 60 days before covering with
the brown coat?
We let the scratch coat sit for at least 2 days on metal lath. If not
your brown coat can sag on you. I let the brown coat set a minimum of 3
days, usually a week.
You can let the scratch coat as long as you want. After a long time
you
may want to soak the wall real good with a hose the day before
you brown.
2. When you
install rib
lath on a soffit, do you install the ribs against the rafters (ribs
up),
or with the ribs down. It seems to me the ribs should be facing down.
This
results in the ribs providing a natural screed, and allows the lath to
sit flat against the rafters.
The most important thing is the open end of the V should go up-If not
you will have a crack every 4 inches. I didn't say may crack, I said it
definitely will Diamond mesh lath works better for stucco.
3. Do you have any
techniques
for stuccoing a radius wall?
A cool trick for rodding radius walls is to nail ropes or old
lengths of hose crossways around your curved wall 5 feet or so apart.
We
use a 5/8" rope nailed on the lath.
Using the ropes for screeds, rod off side to side between the
screeds. Make sure you take the ropes out.
In the old days, they would use old hoses for barrel ceilings
in plaster.
You can leave the hoses in plaster, not stucco, and not have cracks. I
learned all this from old plasterers.
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