Soft /expansion joint - Tile Advice

[Bopster]

Hi guys, I'm tiling a floor in a few weeks over an overlay ufh system. It's going on a kitchen through into a conservatory conversion with the doors removed to open plan the area. Kitchen and conversion will be different heated zones so need either an a expansion joint or a soft joint of matched silicon. Which would you use

The tiles are Ledbury marina blue with andrex dove grey grout so only 2mm grout lines. Don't want a fat unsightly joint in the old door opening between the areas

 

[Ajax123]

Hi guys, I'm tiling a floor in a few weeks over an overlay ufh system. It's going on a kitchen through into a conservatory conversion with the doors removed to open plan the area. Kitchen and conversion will be different heated zones so need either an a expansion joint or a soft joint of matched silicon. Which would you use

The tiles are Ledbury marina blue with andrex dove grey grout so only 2mm grout lines. Don't want a fat unsightly joint in the old door opening between the areas

2mm grout joints is insufficient to meet BS and will not be suitable as a joint either. Movement joints should be between 5 and 12mm wide so my suggestion would be increase your grout joints to 3mm and then use a nice fancy proprietary feature joint of 5mm minimum between the conservatory and the house. there will presumably be a natural movement joint in the substrate between the two areas as its an extension. If not there should be. Other than that its all good. So many tilers miss out joints at this specific area.

 

[Bopster]

I was going to use 5mm expansion joint or 5mm silicon joint at opening. Also for the sake of it also going on ditra mating just incase.
2mm joint is to match the tile which have fake 2mm grout lines crossing them. I know its not too bs but it'll look odd otherwise.

 

[Ajax123]

I was going to use 5mm expansion joint or 5mm silicon joint at opening. Also for the sake of it also going on ditra mating just incase.
2mm joint is to match the tile which have fake 2mm grout lines crossing them. I know its not too bs but it'll look odd otherwise.

Itll look even worse when it pops due to there being insufficient room to move. Up to you though

 

[Dave]

Hi bopster.
whats is sqr mtrge. ?
I would go with a preformed expansion joint for longevity 👍.

 

[Bopster]

Kitchen is 11sqm of tiles laid around kitchen and not under, conservatory is 22sqm to be laid then new skirting onto. 450x450 tiles back buttered obviously.
Schluter preformed is what I'm thinking best thanks

 

[Dave]

Kitchen is 11sqm of tiles laid around kitchen and not under, conservatory is 22sqm to be laid then new skirting onto. 450x450 tiles back buttered obviously.
Schluter preformed is what I'm thinking best thanks

if your using Ditra as well. I can’t see a delamination issue on that size floor with 2mm. Make sure you have perimeter expansion allowances, then tenting won’t be an issue imo.

 

[Bopster]

I'm fitting 18mm skirting so will aim for 10mm gap to wall. I'm confident 2mm is fine