wetroom corner tile joint width

[mymedi]

Hi all,
We are installing a new wet room and in a couple of places the tiler has left a really tiny margin in the corner where one wall meets the other. By tiny I mean really less than 1mm. There is no way grout would fit in there, but since these joints are usually siliconed, I'm wondering about a couple of things:
- will silicone actually be able to fill such a tight joint?
- what's the minimum recommended width of a corner tile joint?
- won't lack of space for tile expansion lead to problems with the rest of the tiles on the wall down the road?
Thanks for your help.
Cheers!

 

[tpt]

no that will be fine on all counts

 

[mymedi]

bump.

Are we all in agreement that this will work out just fine?
How often would the joints need to be re-siliconed then?

Thanks!

 

[ree]

1mm inside corners wont fly. Most tile authorities who publish standards require a wider joint, and most require a full depth joint of silicon for all inside corners.

All grout lines should be the same width for aesthetic reasons.

Background movement, however slight, will eventually grind tile to tile.

Usually, you will rake out and replace silicon, or any conventional grout, when its moldy or looks tired.