What size metal trim?

[MonkeySmokedPie]

I have 3x6 marble subway tile. It is 0.39-in / 10mm thick. What size Schluter metal trim should I use so I do not have to return it after ordering online. Should it be 1/2-in. thick so that the mortar will make up the thickness of the trim with the tile? I'm sure that there is someone on here that can help me out. Thanks

[Tool Guy - Kg]

Welcome to the forum, Karl.

Get as close to to actual thickness of tile you can.

The thickness of the metal trim's leg that's buried in the mortar under the tile will be approximately the same thickness as the setting mortar and the tile will generally touch the top surface of the trim's leg.

Note that the thickness of the tile out at the factory edge is typically thinner than the rest of the tile. So bear in mind if full factory tiles (thinner) or cut tiles (thicker) will abut the trim so that you size the trim properly.

[jadnashua]

It is the thinset that projects through the cutouts in the leg of the profile that support the edge of the tile and lock it in place. As a result, the instructions and what has been said, mean your profile should be the same (not higher) than the thickness of the tile. Essentially, you press the tile down so that the profile ends up in contact with the bottom of the tile with a very thin layer of thinset to ensure 100% contact.