CLEANING
THE CONCRETE
When using a pigmented concrete
stain, the concrete must first be acid etched.
This is because a porous surface is required
for the stain to flow into the pores of the concrete
and bond well. Etching is accomplished by applying
a solution of muriatic acid and water. A smooth
troweled finish on the concrete will need a stronger
solution than a coarse, broomed finish.
The acid solution is
applied by sprinkling it onto the concrete.
The acid should have an immediate
foaming action upon contact with the concrete.
When properly etched, concrete will have a "sandpaper" feel.
A pressure washer and a specially constructed
high-pressure concrete deck washer are then used
to thoroughly rinse the concrete.
When using a reactive/chemical stain, we do
not acid etch the concrete before applying the
reactive chemical stain. next
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