Surface preparation
When preparing the substrate and carrying out the work, the requirements of DSTU-N B A.3.1-23:2013, DSTU-N B V.2.6-212:2016, and DSTU-N B V.3.2-4:2016 must be observed. The surface must be clean, dry, even, load-bearing, and prepared in accordance with the above-mentioned standards. New cement screeds or concrete substrates must be at least 28 days old. Contaminants and substances that negatively affect adhesion must be removed. When used within a waterproofing system, “AquaGrund” should be applied as a primer. Irregularities and defects deeper than 1 mm, as well as areas around engineering service outlets, must be pre-leveled using reinforced filler “FlexSpachtel”. To prevent contamination or in case of existing mold, mildew, algae, or fungi, “BiozidGrund” should be used.
Material preparation
“1K HydroFlex” is a ready-to-use dispersion waterproofing material. Thoroughly mix the contents of the container using a low-speed mixer. Dilution is generally not required.
Application
To obtain a dense, continuous coating, apply the material evenly in a layer not exceeding 1 mm using a stainless steel trowel, roller, stiff brush, or spray method, ensuring no gaps caused by substrate defects remain. Before applying the second layer, allow the first layer to dry for 2 hours. The total thickness of the applied coating must be at least 1 mm.
To achieve a reinforced, crack-resistant coating, it is recommended to embed alkali-resistant reinforcing fiberglass mesh ThermoELF “Gewebe 160” with a density of 160 g/m² into the first, still wet waterproofing layer and smooth it using a flat trowel. Two hours after applying the first layer, apply the second waterproofing layer in a perpendicular direction using the appropriate tool.
Further processing
After complete drying of the final waterproofing layer (12–24 hours on highly absorbent substrates; 4–5 days on low-absorbent substrates), ceramic tile, natural stone installation, or application of decorative finishing materials is recommended.
For tile installation, use cement-based adhesives class C2 or dispersion adhesives class D2TE in accordance with DSTU EN 12004-1:2020.
