In the case of travertine the back of the tile is smooth so a larger notched trowel wouldn t necessarily be required.
Thinset thickness for large wall tile.
Many thinsets max out at 1 4 in a single layer.
Using a u notched trowel and embedding the tile into the thinset leaves you with a bed of thinset beneath the tile a little over 1 3 the size of the trowel teeth.
Spread the mixture using a notched trowel whose notch size.
So a 3 8 u notched trowel leaves a 1 8 bed of thinset beneath the installed tile.
Mapei large format floor tile 50 lb gray powder thinset medium bed mortar item 1103731 model 2184323 good adhesion for ceramic porcelain and natural stone tiles with one or more sides greater than 15 in.
A chemical reaction takes place within 30 minutes of mixing that starts the bonding process between the tile and the underlayment or wall.