Hello, my friends. In this video, I’m sharing some tips on hydration, floating a stucco finish, and how a sponge float should be used, especially when floating or bringing out the sand in new color finishes.
Avoid these common, costly mistakes.
Don’t let lack of knowledge beat up your sensitive, fragile and delicate sponge float; treat it with respect as it’s your besets pal.
Huge tip, never, never, never hydrate or hose down add water or soak a cementitious integrated color finish or a Stucco acrylic or synthetic color cost or system too soon!
What will happen if you hydrate a new color finish the same day or too soon?
Here’s an example, most may understand this analogy; your walls will look as though you poured Clorox on Blue on jeans, the pants will be blotchy and discolored everywhere, and so will stucco-colored walls.
So, no water too soon!
With this analogy, you can now buy jeans and create your own patterns.😏
This is important; we plastering contractors often tell our clients to hose or hydrate the scratch coat and the brown or second coat.
This is considered necessary for thermal expansion, as in expansion and constriction. But not the color finishes.
Hydration is essential to achieving durable stucco.
It’s the principal mechanism of converting Portland cement into a solid binder.
Hydrating or moist curing of stucco achieves two things: long-term strength development and improved substrate conditions for the application of exterior finishes.
This rule also applies to integrated color finishes as they also have Portland cement in them. However, for all that’s holy.
If you feel you must hydrate a color cementitious finish that’s freshly applied, wait at least 5-7 days in hot summer weather or at least 10 days in cold winter times.
Thus you can be assured of no discoloring and or blotchy areas.
Material knowledge with color coats comes with applying color coat finishes to at least 30 homes, with "you" being “Responsible for the outcome.”
If you’re working for a plastering firm, you may never learn these facts.
It’s only when you are called back to redo your own work that stucco wisdom is not only learned but retained.
I’m sharing 40 years of stucco applications, not learned from books but from trial and error; error means any screw-ups I have to go back and repair the work free of charge.
Note: I have applied two acrylic stucco finishes in the last 40 years, and it rained a few days later. This cost me at least 20 thousand dollars for color repairs, so listen up.
In a traditional three-coat stucco system, the finish coat must be cured using the same practices as base coats. Moist-curing can be terminated after 48 to 72 hours, but the finished coat should remain uncoated for at least seven days to prevent coating failure or poor bonding. It is not generally recommended to moist-cure proprietary finish coats with integral color, as this can cause discoloration.
This next part is so boring, but I add it anyways while on the subject of new stucco.
When first applied, stucco’s is at least 12 pH level or more if painted or colored too soon, paint can blister, and cementitious colors can become blotchy.
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