What Trowel Size For 12X24 Tile. With your 12×24 tiles you should use a 1/2 notched trowel on the wall and back butter each tile, but. All tile manufacturers offer a recommended trowel size.
How wide should floor tile grout lines be? The recommended notched trowel size for tile sizes of 12 inches by 24 inches is a ¾ inch notch. (12 x 19 x 12 mm) 25 to 30 sq ft (2,32 to 2,79 m²) 2 4 6 8 10 * actual coverage depends on substrate, type of tile and setting method.