Polyurethane adhesive is used only for construction partition walls, not load-bearing walls. The bricks or blocks should be clean. First moisten the bricks (thermo block) and apply the polyurethane adhesive into 1 or 2 parallel strips 3 - 4 cm wide. Distance between parallel strips should be 5-10 cm for blocks wider than 20 cm. After applying PU adhesive you should wait 3 – 7 min before fixing a brick or a block. When the block is placed on the adhesive, then it can’t be moved anymore. For proper work don’t apply more than 2-3 meters of adhesive at ones. Whit one can (800 ml) we can glue 30 – 35 meters of blocks (2 – 3 cm adhesive bead).