| Ralston agrees acid stains are hard to control. "They're
messy and can be labor-intensive because you often have to
make multiple passes to get the color that's desired," he
says. Also, there are really only about 10 basic colors,
he says, give or take a few depending on the manufacturer.
These can be mixed and matched.
You must wait for the stains to react, Sullivan notes, sometimes
up to 12 hours.
When the staining is done, you must take extra care to neutralize
any remaining acidity with copious amounts of water. And
that water should never go down the drain. "The wastewater
needs to be collected and disposed of properly," Sullivan
stresses.
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