For all of msi s rectangular tiles a minimum of a 1 3 or more off set with 1 8 grout joint size is recommended for rectified tiles and a 3 16 grout joint for non rectified.
How to install large porcelain wall tile.
The recommended adhesive is c2te s1 and it must be spread over in one direction only.
Be sure to put spacers between each tile as you go.
Large format tile must be installed on a level substrate.
This helps spread a good.
Check the laying substrate has no cracks it is homogeneous and mature totally clean and flat.
When installing large format tile there must be at least 90 mortar contact and a minimum grout joint of 3 16.
To install ceramic wall tile use a level and measuring tape to mark the tile locations on the wall with chalk.
Use long sweeping motions to apply mortar to the wall and start placing your tiles in the marked locations.
Then slide the tile into position pushing slightly as you move the tile.
Maximum deviation from flatness of 1mm per 2 meters length measured.
First apply the adhesive onto the back of the slab with a 3mm tile trowel.