Lay the Tile
Next, plot out a tile pattern. Using spacers as a guide, lay one row of tiles all the way across the floor and another row of tiles perpendicular to the first row (Image 1). Laying out the tile before setting it provides a good estimate of how much tile is needed and where you might run into problems along the floor.
With a good idea where the tile will fall, lift the first tiles and spread thinset with the notched trowel, keeping the trowel at a 45-degree angle (Image 2). Lay the tiles down carefully and make any corrections and adjustments while the thinset is wet. Insert spacers to ensure each tile has the same size gap (Image 3).
Keep a wet rag and bucket of water nearby to clean up the thinset as you work. It is very difficult to clean after it dries. After tiling, finish the floor with grout.
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