Before you start hanging head bashers ceiling tile you should as always have the substrate properly prepared.
Best thinset for ceiling tile.
Thinset with small amounts of latex added are primarily used for large format tiles and stone tiles to help absorb flex from floors and walls.
You do not need a 75 bag of non sag thinset to tile a ceiling.
I could not tell from your flow chart.
When you place the tile up and push it in you should hear a hssss or a similar noise that s hard to convey in text d that will be the creation of your vacuum.
Porcelain tile mortar is formulated for installations over concrete and backerboard.
This helps to prevent tiles from cracking.
Unmodified thinset is composed of portland cement sand and water retention agents.
Inorganic and composed of materials mined from the earth thinset is inexpensive and can be purchased either in wet pre mixed or dry powdery form.
It s also expensive stuff.
The instructions on their website for the board from 2015 state to use unmodified thinset for installling the usg 5 band over the seams but no mention of what type of thinset for the tiles so which is best type of thinset in this situation for foam board with large format tiles.
They do not always need to be waterproof.
Additionally thinset comes in either unmodified or modified versions.
You can accomplish the same with the 15 bag of regular modified thinset.
Since thinset tile mortar may crack you may wish to mix it with a special latex additive to increase its strength.
By applying the tile onto the ceiling like this with a 1 2 bead of thinset around the perimeter of the tile it will create a vacuum between the tile and the ceiling when applied.
Because thinset is not affected by moisture it is best for floor tile and any tile in wet areas including shower floors walls and ceilings and tub surrounds.
A little extra thinset beneath a tile is completely acceptable not enough thinset beneath the tile is not acceptable.
Mix the thinset with a mixer rather than by hand let it slake for five minutes and then mix it again.
Excellent for glass tile and radiant heating system installations use for interior or exterior.
Superior bonding of porcelain to concrete backerboard and cement self leveling underlayment.
Square notched is a personal preference.
Non sag thinset is basically just thinset that is sticky it s great stuff.