Joint mortar with trass for grouting clinker and facade tiles

Factory tinted, dry mixture for grouting ceramic façade tiles, clinker tiles, stoneware and stone in the KABE THERM CK EWI system. Intended for use in the range of 6÷20 mm (joint depth and width). KOMBI KS2 mortar is a product based on selected aggregates, high-quality cements, volcanic tuff (trass) and additives, ready for use after adding an appropriate amount of mixing water. The product is a component of EWI system based on EPS, made in the technologycof the external thermal insulation composite system ETICS.

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Mixing ratio: 2.5÷3.0 liters of water for 25 kg of mortar;
Time of consumption: approx. 1.0 hour;
Joint width / depth: 6÷20 mm6÷20 mm
Colours: according to the Farby KABE joints of clinker colour chart;
Application temperature (air and substrate): from +5°C to+25°C. Note: Lower or higher than optimal temperature may adversely affect the properties of the product;
Performance: From one 25 kg bag of mortar, after adding the appropriate amount of water, we obtain 17.5 liters of readyto- use mortar;
Average consumption: For façade and clinker tiles, an approximate consumption of approx. 3 kg/1 m2 with a joint depth of 10 mm and a joint width of 10 mm can be assumed;
Packaging: 25 kg bags, reinforced paper bags, with a double polyurethane film liner. 48 bags on a pallet;
Storage: 12 months - recommended use within 6 months;
Storage conditions: Protect against moisture and store in a dry place on pallets in original packaging. Opened packages should be tightly closed;
Fire spread rate: NRO
Water absorption of the reinforcing coat after 24 hours: <0.5 [kg/m2];
Water absorption of the top layer after 24 hours: <0.5 [kg/m2];
Impact resistance of the top layer: cat. I;
Diffusion resistance of the surface layer: Sd≤5.7 [m];
Frost resistance of the top layer: no damage;
Top layer adhesion to EPS:- in laboratory conditions: ≥0.08 [MPa] - after 2 days of immersion in water and 2 hours of drying: ≥0.08 [MPa] - after ageing: ≥0.08 [MPa] - after cycles of frost resistance: ≥0.08 [MPa];
Maximum weight: 260 N;
Maximum deflection: 8.4 mm.

• Mineral mortar with trass that minimises the risk of efflorescence
• Universal in use, the depth and width of the joint from 6 to 20 mm
• By using the trass, it ensures high vapour permeability, reduces mortar tension and
strongly compacts the structure, limiting the capillary transport of mixing water
• After setting, it is frost-resistant, hydrophobic and
resistant to adverse atmospheric conditions
• Application in semi-dry consistency
• High compressive strength> 15 N/mm2
• Available in several colours according to the colour chart

Substrate: The substrate should be clean, free from dust and oil. Remove all loose, unbound parts and remnants of mortar. After sticking the ceramic claddings, thoroughly clean the joints of any adhesive residues. Under special conditions (high temperature, high tile absorption), in order to increase the adhesion of the joint, the “joint mesh” can be slightly moistened with water before grouting.

Mortar preparation: Mix the contents of the entire package of 25 kg with approx. 2.5÷3.0 l of water (to maintain a uniform shade of colour, always dose the same amount of water). Mix thoroughly the mortar using a slow-speed mixer or a concrete mixer until a homogeneous mass with a moist consistency is obtained, the so-called “wet ground”. After mixing, wait 5 minutes and mix again. A properly prepared mortar, when squeezed in the hand and opened, forms a compact lump and leaves no wet trace. The prepared portion of the mortar should be used within one hour. Note: It is forbidden to add water to the previously prepared mortar during works, because it may change the colour.

Grouting: The KOMBI KS2 mortar is applied using a jointing kit. The mortar should be applied using the “wet on wet” method, at the same time compacting the mortar structure by pressing a stainless steel “joint” trowel or using other tools. The joint width and depth should be between 6 mm and 20 mm. With a joint depth of less than 6 mm, chipping may occur. All kinds of dirt should be remove only with a dry, soft brush. Note: The use of water for cleaning fresh mortar is unacceptable! After initial setting of the mortar, rinse the surface of the tiles with a slightly damp sponge diagonally to the grout grid. Pay special attention to cleaning the surface of the fresh joint or not wetting the fresh joint with too much water. During the works, the general rules of building practice should be followed.

Drying: Fresh mortar should be protected against adverse weather conditions (frost, gusty winds, direct sunlight and rain) for approx. 7 days. For this purpose, the jointed surfaces should be covered with a tarpaulin, foil or mats. Adequate ventilation should be provided around the jointed element. It should be assumed that the drying time of the joint is 1 day (24 hours) for every 1 mm of thickness. After the joints are completely set and dry, it is recommended to use the SILIKON B siloxane impregnation over the entire surface of the wall (joints and tiles/bricks).

Useful hints: Optimum processing conditions: air, substrate and product temperature should be within 5°C÷25°C. Note: Lower or higher than optimal temperature may adversely affect the properties of the product. The mortar is mass-coloured and available in colours according to the Farby KABE colour chart. Due to the repeatability of colour, bags from the same production batch should be used (batch number and mortar colour on the print on the side of the bag). Apart from clean water, no other substances may be added.

Safety hints: It is a dusty product in dry conditions, in combination with water or moisture it gives a strongly alkaline reaction. Therefore, protect the eyes and skin. Use standard methods of skin, eyes and respiratory protection. In the case of mortar contact with the skin, rinse the contact area thoroughly with water. In case of eye contact mortar is required extensive washing the eye with water and seek immediate medical advice.