it cure between coats.
Let your brown coat cure at least a
week before applying the
Probably the largest single reason for excessive
cracking in stucco is not allowing the brown coat cure
long enough. These cracks usually look like the cracks
of a shattered mirror.
Each layer of cement forms it's own separate
slab. Only a slight amount of
cracking in the brown coat will shatter the finish coat.
As the brown coat cures,
and dries, it shrinks and cracks.
In California, the building code requires the
brown coat sit for 30 days before the finish is
applied.(Correct me if I am wrong). This seems like an
expensive delay in hot, desert areas where 2 or 3 days
may be fine. Fortunately, here in Virginia, there is no
building code governing stucco, which is both good and
bad. The good is I don't have the government directing
me how to do my work.
Another good reason to let the mortar sit is to
avoid being able to "read" green spots in the finish.
You can see the size and shape of the green spot a long
way away. It ususally shows as a swirly or coarse area.
The best thing to do here is do nothing- let it