Ceresit CX 20 COMFORT mortar can be applied on compact, load-bearing and clean substrates free of substances that reduce adhesion, such as: fats, bitumen, dust. The substrate should be forged or drilled with a mounting hole of min. 5 mm larger than the embedded element. In the case of larger cavities, the gap should be disassembled in the so-called swallow tail.
Before application, the substrate should be moistened abundantly with water. Apply the material on matte-moist substrates. In the case of reconstruction of damaged elements, it is recommended to apply the mortar to the substrate with a hard brush and then apply the material “fresh on fresh” in one technological cycle.
Example: Reconstruction of damaged concrete stairs with CX 20 COMFORT