KNAUF K2 flexible tile adhesive Bau-und Fliesenkleber 25kg

Knauf K2 Durable Tile Adhesive for Repair Work Bau-und Fliesenkleber is an industrially prepared thin-bed tile adhesive for heavily loaded, stable surfaces; plasterboard (mounted on the wall in two layers). It is intended for bonding ceramic tiles, slabs, and non-transparent natural stone slabs. Suitable for walls and floors, including underfloor heating. Suitable for interior and exterior work. Grouting can be done for wall tiles no earlier than 1 day after installation, and for floor tiles after 2 days. High-quality cement-based tile adhesive with reduced slip and extended setting time (complies with LVS EN 12004 requirements). The ready-to-use dry mixture must be mixed with water before use.

Consumption: approx. 2.5 kg/m² (with a 6 mm notched trowel)

Classification: C2TE

Features:

• elastic
• high initial adhesion
• without shrinkage and tension
• frost-resistant
• load-bearing
• with extended setting time
• with reduced slip

The substrate must be smooth, hard, free of frost, dust, paint, and oil residues. If the surface is plastered, the plaster must be at least 10 mm thick, in one layer, and must not be smoothed.

Application: First, apply the mixed adhesive with a trowel or putty knife to the entire prepared surface to the desired thickness. Then, holding the trowel at a 90° angle, comb it with an appropriate notched trowel (the size of the notch should match the size of the tiles). Press the tiles firmly and with a slight twisting motion. If a film forms (check with your finger!), apply the adhesive again. The setting and correction time depends on the substrate and the tiles' absorption capacity, as well as the air temperature. Grouting can only be done after the adhesive has hardened - for wall tiles no earlier than 1 day after installation, and for floor tiles after 2 days. The underfloor heating system must be turned on in the maximum temperature mode for at least 24 hours before tiling begins. Before tiling, it must be turned off and cooled down. Full heating can be turned on no earlier than 28 days after tiling. Attention! The larger the tiles and the lower their water absorption capacity, the slower the adhesive dries.