Expansion gap - Tile Advice

[Bopster]

I'm going to be tiling a conservatory floor which has wet ufh. 3 walls are metal frame of conservatory other wall is a combination of skirting board, expansion joint to tiled floor.
My question is on the 3 metal walls how much room do I leave for expansion? I'll be using colour matched silicon to infill
Flour area is 22sqm btw

 

[Dave]

I would say 5mm would suffice. Its not a massive floor.

 

[Bopster]

I would say 5mm would suffice. Its not a massive floor.

That's what I was hoping mate, if it was 7mm upwards I was thinking of a white trim to match conservatory. Would prefer silicon though

 

[Dave]

That's what I was hoping mate, if it was 7mm upwards I was thinking of a white trim to match conservatory. Would prefer silicon though

imo it will be fine ..