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Water-based, acrylic-based wall fixative, suitable for consolidating all kinds of wall supports, or layers of old chalked paint, as well as for varnishing bricks, natural or artificial stone, etc. It has a magnificent resistance to alkalinity, being the ideal support for the successive layers of paint to be applied on the aforementioned supports. The uses are: Due to its composition, it is indicated to harden and fix interior and exterior walls and ceilings, walls with old glue or tempera paints before being painted with plastic paints, essentially all kinds of materials with excessive porosity or that have a tendency to release dust. Masonry surfaces. Inside and outside. brick walls. Materials that tend to leave marks when painted. Concrete. Cement mortar.