CERESIT_CN94_TDS_10_2025 CHARACTERISTICS For inside and outside For critical substrates For absorbent and non-absorbent substrates Powerful adhesion Fast drying High strengthening effect “Bridging effect” Recommended on OSB boards and ceramic tiles Can be diluted with water 1:5 Excellent for the vertical and horizontal surfaces SCOPE OF USE Ceresit CN 94 is designed for priming substrates inside and outside buildings before laying floor levelling mortars, patching compounds, adhesive mortars for ceramic and stone tiles. CN 94 is concentrated primer with perfect layer bridging increasing open time. It can be applied intu vertical and horizontal surfaces, both absorbent and non-absorbent ones. The formulation is particularly recommended for critical substrates (only inside the buildings) such as: screeds with adhesive residues which are difficult to remove, ceramic tiles, dispersion and epoxy paint coats. The product strengthens the substrate surface and improves adhesion to the substrate. CN 94 can be applied on anhydrite, cement and mastic asphalt screeds, prefabricated screed elements (e.g. floor gypsum-fibre board), concrete, including vacuum concrete, painted and non-painted wood-derivative substrates (chipboards, OSB, boards), floor levelling mortars, existing ceramic and stone tiles, cement, cementlime and lime plasters, gypsum and aerated concrete substrates. CN 94 can also be used on heated floor structures. SUBSTRATE PREPARATION The surfaces primed with CN 94 must be dry, load-bearing, and free of adhesion-reducing substances: fats, bitumen, dust, etc. Any stains and layers of poor strength need to be removed. This also applies to existing adhesive paints, which must be scraped off and washed down with water. Gypsum and anhydrite substrates, OSB panels and strong paint coats must be ground with coarse sand paper, and thoroughly cleaned and vacuumed. All smooth and non-absorbent surfaces must be first ground and roughened. Requirements for individual types of substrates are indicated in the table. CN 94 APPLICATION Shake the contents of the package several times. Concentrate must be diluted with water. The dilution range depends on the type and absorbency of the substrate. The maximum dilution range is 1 part CN 94 and 5 parts of water. For non-absorbent, wood-derivative surfaces and mastic asphalt screeds, CN 94 should be used undiluted. Apply thin layers of the product. Spread it evenly with a brush, not creating puddles. Depending on the type of substrate, drying time is from 2 to 4 hours. After full cure, the surface must be resistant to scratching. Otherwise, the priming procedure must be repeated within 24 hours. Tools and fresh stains should be washed with water. Dried stains may be removed with solvent or mechanically. PLEASE NOTE Works should be carried out in dry conditions, at air and substrate temperature ranging from +5 °C to +25 °C. Prevent draughts. CN 94 must not be poured to the sewer and mixed with other additives. STORAGE Up to 18 months from the production date if stored in cool conditions and in original and undamaged packaging. Protect from frost! PACKAGING Canisters of 10 kg and 5 kg, and a bottle of 1 kg. STRONG CONTACT Special primer for reliable bonding of floor levelling compounds, ceramic and natural stones on critical surfaces 5 Single-layer priming Inside & outside Non-absorbent substrates STRONG CONTACT
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