Polypipe Overlay Wet Ufh.

[Old Mod]

Schluters can have a much thinner screed though on the bekotech panels.
Can't remember how deep exactly now though. But once it's dry enough to walk on with out leaving an impression you can ditra it and tile.

Wasn't it about 30mm @AliGage?

 

[AliGage]

Wasn't it about 30mm @AliGage?

Yeah something like that. I'll look it up later. But something Luke 30-32mm above the panels.

 

[AliGage]

Minimum screed thickness is 32mm. 8mm above the nibs in the panels.

Schlüter®-BEKOTEC | Function | Schlüter-Systems

 

[widler]

but even 30mm of screed would need 30 days to dry .
Would ditra over the top of a wet screed not trap the moisture ? Is ditra breathable , it is a worry thinking what these companies think up .
What about 'green screed addy' ,is this not a option ?

 

[Old Mod]

but even 30mm of screed would need 30 days to dry .
Would ditra over the top of a wet screed not trap the moisture ? Is ditra breathable , it is a worry thinking what these companies think up .
What about 'green screed addy' ,is this not a option ?

If u tape and joint Ditra with Kerdi band ( Keba) and use Kerdi Coll adhesive, that's their waterproof addy. Ditra forms a vapour barrier and can be tiled on as soon as u can walk on it without leaving foot marks or as soon as it can be mechanically repaired, I think the term is.
The screed will take longer to dry ultimately but there is less chance of it cracking or curling.

 

[widler]

Still not sure where the moisture would go marc.
Below is foil backed insulation, above is plastic barrier, wheres it going ?
You know i like a discussion 😉 but you have one half saying its gotta be dry and the other saying , ditra it and away you go
Im serious in saying this, i beleive none of them have the slightest idea how it works in EVERY environment, they test it and wing it 😉

 

[Old Mod]

Moisture goes sideways Craig, the gap between fleece and plastic is the vapour barrier.

 

[Chalker]

Whatever way you look at this
To guarantee from failure. The floor needs to be dry.

 

[widler]

nope, i need science not 'it goes side ways'
It can go sideways when its tiled 😉
The ditra is yet another barrier for the moisture to get past.
Come on, its friday

 

[J Sid]

I've been tiling over wet, week old new screeds for years using ditra as per there recommendations and never had any problems.