[JazMan]

Hi,

The industry minimum for these type of tiles is ⅛" as you mentioned, BUT not for all tiles. Your big box tiles, (which probably cost under $3.00), are probably not rectified, and so you should not attempt anything under 3/16", but you may have to go ¼". You need to check samples from multiple boxes for size, carefully. The minimum wide is 3 times the difference in size among the tiles.

Don't forget to leave expansion joints around the perimeter. As for field joints, at 25 ft. you should be ok if the room is a rectangle as you said. How many doorways are there and what flooring is in those other rooms?

Jaz

 

[JazMan]

NO, we don't use scrap in our homes.

Traditionally bathrooms always had a marble threshold. But the color choice was usually limited to 2-3 colors unless you had one made from a slab. $8-10 compared to $40-60 plus two trips and 3 day wait. Tile contractors can't put up with that.

Due to the different installation methods used today, and to avoid using an odd color piece of marble we use the "L" shaped aluminum molding you mentioned. That's what I used the last 10 years or so.

I don't know what you're saying about the laundry. Every doorway may be unique.

But the main reason I asked about the adjoining rooms is on the subject of expansion joints. You need to install expansion joints in the doorways that butt to a solid surface.

Jaz

 

[JazMan]

Yes right, caulk.

A regular wall is 4.5" thick and is what the pros here use as thresholds. 4.5 x 28" or 30" or? For some reason the big boxes carry threshold that are 4" wide. Beats me, looks silly to me. The Schluter Schiene molding (or its generic copies), is as common as anything I can think of. There is no tile store that does not carry them. Where have you tried?

Jaz

 

[JazMan]

Some hardware stores carry those things too. Any new construction nearby?

Jaz

 

[JazMan]

Oh, I don't know. Just might be a tile crew installing tiles.

Jaz