Considerations When Selecting Acid Stain
choosing Acid stain as a color choice
and finish for Concrete it is necessary
to be educated on its limitations.
The end user should be aware that the
basic principles which make Acid
Staining so beautifully mottled,
variegated and marbleized can also cause
some undesirable results.
Acid Stain in its packaging is often a
translucent color that does not
represent the final color that the
concrete surface will become after the
reaction and finishing takes place.
Many tan and amber Acid Stain colors
come out of the package a light green
and black is generally anything but.
color will not be evident until the
Stain has completely reacted with the
cement substrate. The reaction takes
place over a period of 1-8 hours
(depending on the manufacturer).
Additionally, the color when dry is
usually altered to a deep wet look
coloration with the application of
solvent based sealers, though a water
based sealer can maintain the soft look
of the acid Stain when dry.
Acid Stains add translucent colors to
the concrete surface and do not hide the
imperfections of the concrete.
Flaws from poor finishing, carpet tack
strips holes, tile mortar, non-removable
stains from oils and other items,
previous coating removal marks – even
shadowing from VCT and tile grids – will
Any undesirable blemishes or
imperfections should be addressed prior
to stain application. We will help you
to determine which ones may be of
concern and propose a remediation.
Application hazards and variations in
the surface generally blend in or simply
add to the variegated look and feel
desired when choosing the natural
marbling effect of concrete stain
charts should be used as a guide only. On request an onsite mockup can be
created to determine final color, or in
case of overlays we can create a
varies depending on surface porosity and
texture, concrete composition and age,
preparation and application techniques,
number applications, dilution rates, and
extensive experience with acid stains
from most manufacturers, because of
consistent quality and reliability we
prefer to work with Chem-Stone (see
color chart), Chem-Coat (see
color chart) acid stains, Kemiko (see
color chart), and Scofield (see
color chart) acid stains.
stains are permanent they cannot be
easily removed, color will not fade,
chip, crack or peel and wears only as
the concrete wears.
stains do not hide surface blemishes
cracks or construction errors. No
matter how discolored the concrete, many
blemishes or variations will only add to
the character of the finished floor.