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The
time needed for proper etching with RemovALL 120 safe etch for concrete
depends mainly on the type and age of the concrete. Most concrete can be
etched within 15 to 30 minutes. Should you want a deeper etch, use a
nylon brush, roller or rag to go over the surface and allow another 15
minutes contact time. Repeat, as needed, for additional etch. For
optimum results rinse the product off as soon as adequate etch has been
achieved.
Always remove any contaminant, including oil and grease from the surface
prior to etch and regularly check pH at each stage to ensure
compatibility. Coatings can be repainted where the coating is in sound
shape. Any bare spots should also be etched.
Thoroughly rinse with warm clean water to remove all residues when
adequate etch has been achieved. It is preferential to use a high
pressure washer for this process. Litmus paper is needed to check the pH
of the rinse water. If the rinse water is not pH neutral (pH 7-8) or if
a film is present on the surface, additional rinsing is necessary. Do
not let RemovALL 120 safe etch for concrete dry out on the surface.
Use a shop vac to remove any remaining powder after the surface had
dried. If you do not remove this powder it may lead to reduced or
poor product adhesion.
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