If the installer was only back buttering the tile in the middle but troweled it out so almost the tile s entire backside was covered with the 1 2 notch pattern of thinset that is ok.
How much thin set behind tile on wall.
Ceramic and porcelain tile are properly installed with a tradition notched trowel at depths of 1 4 inch to 3 8 inch.
It will work just as well so doing that same thing on the wall.
Spread the mixture using a notched trowel whose notch size.
Tile size will determine the size of the trowel you use to spread the thinset.
How to calculate thinset quantity square feet.
Read the back of the thinset bag to see how much water you need for the entire bag.
When you mar 6 2015 for thicker tiles larger notches are recommended.
Dec 15 2016 the trowel size determines how much thinset to put on the substrate as well as how thick the bed of thinset should be under the tile.
The larger the tiles the more.
For the thinset i m using in the video above it said to use 5 5 6 5 quarts of water for the entire 50 lb bag.
Excess thinset will squirt out of the grout lines and create unneeded hassle.
Square feet is calculated by measuring the length of the longest wall and the width of the shortest wall.
Then figure out how much thinset to mix so you have enough for about twenty square feet of tile to start with for your first time.