weberset spf question

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Is weber spf recommended for porcelain tiles on ditra (floor) and also mapei aquadefense (wall)
 
wouldn't use spf on ditra only because if it sticks to the orange the ditra will not work as a uncoupling membrane
 
But does spf actually stick or bond to the ditra plastic waffle not just been held in place when cured by the dovetail effect?
 
What makes you think that that could be a possibility which is not shared by other brands?
 
wouldn't use spf on ditra only because if it sticks to the orange the ditra will not work as a uncoupling membrane
"Immediately after the Schluter -Ditra 25 matting is installed, the tiles can be set using the thin bed method and using a bonding tile adhesive that matches the requirements of the covering." Copied from Ditra 25 data sheet (6.1). Therefore as a modified (SPF) adhesive required for the porcelain tiles Shluter are saying to use it!
 
"Immediately after the Schluter -Ditra 25 matting is installed, the tiles can be set using the thin bed method and using a bonding tile adhesive that matches the requirements of the covering." Copied from Ditra 25 data sheet (6.1). Therefore as a modified (SPF) adhesive required for the porcelain tiles Shluter are saying to use it!
you missed copying
"Using the thin-bed method and following all applicable industry standards, set the tile or stone covering directly on the Schlüter®DITRA 25 in such a way that the tile adhesive becomes mechanically anchored in the square, cut back cavities of the Schlüter®DITRA 25 matting.

notice the mechanically anchored and not chemically fixed.

but if fitting, say gulf stone who recommend a two part adhesive or the TM equivalent as favoured by many members on here, Schluter say you mustn't use these adhesive on ditra due to these adhesives bonding / chemically fixing to the plastic and stopping the product uncoupling.

Also care should be taken if laying tiles "immediately" after laying the ditra. un-cured adhesive sticking the ditra mean tiles can't be lifted without pulling the ditra up.
 
Last edited by a moderator:
I have spoken to Weber and they say it is suitable for Ditra 25 - does anybody have any experience to the contrary?
Would Weber set plus be a more suitable alternative
 

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