Question and answers on Stucco and Plastering-- March, 2015
Help please with a stucco question.
New colored plaster (stucco) has been applied to my
backyard. It is all
properly prepped with a brown coat and then the color
plaster over it.
The problem: The weather was very different on the
two different days they
applied the final plaster. Consequently the color of
the large wall bar b
que is different from my low planter walls.
Can they do a thin skim coat over smooth plaster to correct
the color of the
small planter wall area? Or do they have to chip it off and
Mystic 25 percent (or 20 percent) more color
25% is easily
measured using three cups. A color pack is
measured by measuring two equal parts in 2 cups.
half in halves and you have 25%
You can re-coat your new
color coat, but the color will be too white without adding
The color can be adjusted by adding 25% more color
and it will look fine. I got this from Maurice
at the Expo stucco lab, who says add 20% more. The reason
I go 25% is because 25% is easier
to measure. We have added 25% more several times and have
had excellent results. The color
has always come out very close at not noticable. If you add your 25% more to each color pack in the
mix you will be alright. Remember that white portland won't bond to white
portland with out a chemical bonding
admixture. Without a bonding admixture your new color coat will
shrink and crack and fall off. My half and half flex-con to water mixture should