CERESIT® CR 166 is a two-component flexible slurry, strengthened with fibres and designed for waterproofing and damp-proofing on deformable and non-deformable mineral substrates – suitable for internal and external use on walls, floors and ceilings. CR 166 flexibility allows it to bridge ≥ 0,75 mm wide cracks – even in cold conditions. It can be applied on balconies and terraces, permanent and temporary wet rooms, swimming pools, and on walls and floors as a waterproofing layer used underneath coverings associated with tile adhesives. Available pack size: 10kg, 15kg, 25kg, 32kg
Remove dirt, layers of low strength, and all paint coatings and release agents. For mineral construction substrates that must be even and absorbent, it is recommended to use sandblasting or high-water pressure for cleaning. Enlarge the stable cracks and fill them with cement mortar CERESIT CX 5 EXPRESS, or alternatively with epoxy resin. Compensate hollows and irregularly shaped substrates with cement mortar.
The material should be stirred until it forms a homogeneous mixture, free of lumps. Wait about 5 minutes and stir the material briefly once more. In case of spray application, the mortar should be applied in single layer until the desired thickness is obtained. Depending on the type of aggregate, atmospheric conditions and the type of substrate for the mortar, you can add water without exceeding 2 liters for 32 kg set or 1 liter for 16 kg bucket. After spray application, the substrate should be smoothed with a trowel, respecting open time. If applied manually, the first layer of CERESIT CR 166 should always be applied with a brush in generous quantities (preferably with a wide wall brush) into a moist but not wet substrate, while the next layers can be applied by a trowel or with a brush or roller. The second layer should be applied to matt wet and hardened first layer, after approx. 90-120 minutes under average conditions.
Always follow all generally recognized rules of waterproofing technology as well as applicable national standards. The mixed material must be used within 60 minutes. If the material becomes stiffer during this time, it is recommended to stir it occasionally. No extra water or liquid should be added. In case of roller application, use a structure nylon type roller for thick materials' application (e.g. for skim coats).
CERESIT CR 166 waterproofing slurry can be applied on balconies and terraces (including cantilevered types), permanent and temporary wet rooms, swimming pools, and on walls and floors as a waterproofing layer used underneath coverings associated with tile adhesives. It can also be used for waterproofing and concrete protection structures embedded in the ground (basement walls, foundations, etc.), plinth zones and water tanks, including drinking water, municipal sewage treatment plants and septic tanks. CERESIT CR 166 coating delays the carbonation process and provides effective anti-corrosion protection for concrete/reinforced concrete land and water structures.
CERESIT CR 166 can be applied on the following mineral substrates where even, solid, load-bearing, clean, crack-free and free of substances that may impair adhesion (e.g. fats, bituminous or dust): concrete (over 28 days old), cementitious plaster and composite screeds (over 28 days old), fast hardening screed mortar CERESIT CN 87 (minimum 3 days old), walls made of ceramic bricks, hollows and concrete blocks with flash joints (over 28 days old), cement-fibre boards, gypsum, OSB and chipboards , metal and steel (with appropriate anticorrosion protection), epoxy coatings and old tiles (indoors only).
Before the work is finished, it is essential to check if the required thickness of CERESIT CR 166 has been applied to the substrate – the minimum final thickness of the layers is 2 mm. Work should be carried out at an ambient and substrate temperature of between +5°C and +30°C and with air humidity below 80%. Timings given apply to standard conditions: temperature 23°C and 50% relative air humidity. The applied slurry needs to be protected for at least 12 h to prevent it from drying out too quickly, from frost and from precipitation. Installation of covers to protect from direct sunlight, draughts, rain and frost is recommended. Wait a minimum 12 hours from the application of CERESIT CR 166 before laying ceramic tiles, and 3 days before applying coats of paint. When covering the waterproofed substrate with tiles, always use a tile adhesive of minimum quality C.