This should be able to slowly pour like molten lava or pancake batter, but also be able to retain its shape as though it were like creamy mashed potatoes.
Designate an area on where to begin laying your first set of floor tiles, and scoop out a quantity about the size of a dinner plate for a 12″ floor tile with your trowel from the mixing bucket. If scooping it out is too difficult, then you can also just lay the bucket down and slide as much mortar as you need out. Then move the remainder (in the bucket) of mix out of the way, and cover the bucket with a damp cloth in order for the mortar to remain moist and prevent it from drying out too quickly.
For laying ceramic floor tiles, take your recommended 3/8″ by 1/4″ inch notched trowel, and using the flat edge of the trowel, gently begin spreading the mortar over the area to be tiled. Now, many of the seasoned professionals may tell you that you should use a 1/2″ by 1/2″ inch notched trowel for this job, especially the senior members of the floor tiling business.
The reason for this is that during the early years, that was the only sized notched trowel available to use, and therefore that is basically what they were brought up on and continue to use to this day without fail. During our present generation however, there are new alternatives on the market made for specific tiling jobs, and even though the 1/2″ by 1/2″ inch trowel is a great all-rounder for floor tiling, the smaller 3/8″ by 1/4″ inch is more suited towards the job of lightweight ceramic floor tiles as well as numerous other applications.
If you were however tiling directly over a previously tiled floor, then that is where the 1/2″ by 1/2″ inch notched trowel would come in useful for spreading the mortar, and also with laying heavier floor tiles of different compositions. But, with not being at the actual stage of spreading the floor tile mortar into ‘furrows’ or ‘troughs’, (whichever way you look at it), with the notched edges, we first must use the flat edge of the trowel to gently spread and ‘key-in’ the mortar.
Floor Tile Mortar – How to Spread the Floor Tile Mortar