You re going to want a really high quality thinset for this project.
Best thinset for large format tile.
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Maximum coverage area sq.
It can be used for any size tile and works great with schluter products.
Ft less than 99 3 99 199 9.
There are many more.
Custom building products complete contact white 50 lb.
Out of stock online.
Select one of custom s dry set modified mortars for large and heavy tile also called medium bed mortar to support large format tile installations.
Versabond lft is specially formulated for large format tiles.
With a non slumping formula to eliminate lippage versabond lft can be applied to 3 4 in.
Something like custom megalite or laticrete titanium would be two of the choices.
The one i prefer is bostik ditraset.
Non sag formula is the ideal solution for installation of large tiles on walls excellent for ceramic porcelain and natural stone tiles with one or more sides greater than 15 in unique non slump formulation allows for easier medium bed installation up to 3 4 in thick of large floor tiles.
For large tiles you are going to want to use an unmodified thinset that specifically says it s ok for large tiles.
19 mm thick on horizontal applications.
These mortars may be applied up to 3 4 thick and provide superior coverage and bond strength while reducing lippage between tiles.
Thin set mortar 27 color family.
Large format rapid setting tile mortar model cclftrsw50 35 87 35 87.
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Large format tile lft is 15 38 cm or greater on any side as well as heavier natural stone such as marble granite travertine slate and limestone.
It is always better to use a larger trowel than you might need for the installation.
I ve never found it at a box store though.
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A little extra thinset beneath a tile is completely acceptable not enough thinset beneath the tile is not acceptable.