Wall Layout/Design
Hello:
So, I am finalizing my layout designs and have what is probably stupid questions, but I am trying to determine the perpendicular placement distance for the corner tiles that will give the correct grout size going up the corner of the tub.
How do I determine how far away the finished surface of the WALL tiles will sit above the surface they are being applied to? (This way I can determine how much space to place the tiles from the prepared surface to give me that correct grout line size)...I guess I need to know in the end how the method of figuring out how thick of a space the thinset will push the tile out from the prepared surface.
If I am using a spacer and leveling system (MAPELEVEL EASYWDG SYSTEM) to ensure 1/8" grout lines and to ensure they will all be level as well does the thinset trowel notch size play a roll in figuring this out?
Or am I assuming only the thickness of the high-density polyethylene whose back surface fit just underneath the edges of the tiles?
Thank You!!!
Jillian


My tiles are 7-7/8" H x 19-11/16" L x 5/16" thick... and the leveling system I purchased to help with the install give me 1/8" grout lines and leaves only 1/16" thinset between the wall and the back of the tile. That will bring the finished wall surface out to 3/8" from the waterproofed backer board if I am correct in my thinking.
Unless more thinset will be left behind beyond the thickness of the leveling systems clip thickness. That being the case should I then use a 1/4" notch trowel to ensure only 1/16" is left as the leveling system is set up for that or perhaps the 3/8" notch and then retrowel the extra that smushes out and clean our grout lines for extra that comes out through those areas to ensure full coverage?
I ask because Isaac has said that when using a large format tile like I have a 1/2" notch is required. But doing that seems counter intuitive to the leveling systems set thinset thickness.
What is the purpose of the 1/2" notch trowel for larger format tiles? Do larger format tile need more thinset to stay secured to the walls? If that is the case should I return the leveling and spacing system I purchased and find one that is specific for large format tiles?
Thanks