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CATEGORIES:
LIMESTONE RESTORATION - BLACK
CRUST - GRAFFITI SHADOW
REMOVAL - NEW CONSTRUCTION
BLACK CRUST
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Product: Stripper Cream
EaCo Chem was invited to test on the Cathedral of Learning
in Pittsburgh along with many restoration chemical manufacturers.
This historical building has on its surface some areas of
black crust that are up to a quarter of an inch thick. We
for some reason were told not to neutralize after we removed
this heavy buildup in one hour with one application of Stripper
Cream. There was no harm. We have found the same thing
to be true whether removing graffiti or vine stems from limestone.
Our product is comprised principally of soaps so generally
does not leave a heavy caustic residue.
Application: Apply the product to the environmental
pollution stains by roller or spray. Spraying should be confined
to areas with limited danger of damage from the caustic. Prewet
the surface lightly before application. Do not apply the product
too thin. There must be adequate thickness of the stripper
to allow total soaking with the caustic.
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Dilutions: Generally the product is applied undiluted to
the staining on the black crust and may be diluted up to 4-1 on
mineral stains that are not dimensional on the surface.
Removal: Rinse with a pressure washer, being careful not
to harm the surface.
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