NOTE: To clean acid-reacting stone material (for example,
baked bricks) use RIALTO ALKAL "1", and to clean alcaline-reacting
stone material (for example, limestone) use RIALTO ALKAL "2".
If the chemical composition of the substrate is not known, try
first in a small area as follows: apply by brush a generous coat
of RIALTO ALKAL "1" and of RIALTO ALKAL "2"
on a nearby surface. Allow 30 minutes and then rinse thoroughly
using a pressure-washer, adding 1 l of RIALTO NEUTRAL "K1"
or, respectively, RIALTO NEUTRAL "K2" for every 50-60
l of water. Allow the coats to dry completely, then choose the
detergent that does not leave whitish stains:
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Graffiti
removal