Ditra on Anhydrite

[Mark@Tilemaster]

Its different to the Kerakoll Ideal David and Anhyfix doesn't rely on dispersion. Its a rapid setting gypsum based adhesive that will set within 3 hours. AnhyFix is made with a blend of gypsum based materials, one of them a rapid setting product and the usual herbs and spices so it doesn't rely on suction from the tile or substrate in order for it to set.

Its also ideal for new plaster skim, but cannot be used in wet/damp environments.

My understanding on the Kerkaoll product is that it doesn't contain much, if any gypsum, i believe its based on the marble dust etc but how true this i don't know? I have heard of the Kerakoll taking a while to set when used in conjunction with an uncoupling membrane.

 

[Mark@Tilemaster]

you can pay for yours andy!

 

[Mark@Tilemaster]

Leave it with me Neale and i'll take care of it for you. Had an excellent response so far by the way

 

[Al@Lifetiles]

Just to add a real life situation to this thread... I was about to tile a 70m2 (UFH)Anhydite screed with the following prep: labourer sanded and applied 1/1 Mapie Primer G, allowed to dry overnight then neat primer G. Ditra was then fixed with Mapie Keraquick mixed with Latex plus. The stone (supposed to be 15mm thick) arrived on a slow boat from China and was 18mm thick! The floor flowed through glass doors to an outdoor patio so the heights had to be exact. End result was Ditra had to be lifted so floor could be sanded back. Lifting the Ditra was near impossible. Specialist floor grinding company called as the Ditra was stuck solid and we simply could not get it off floor.
Just thought I'd mention it.

 

[Andy Tiler]

you can pay for yours andy!

 

[Gazzer]

What has this to do with Anhydrite screeds? Surely that would have been the same with cement screed with stone. Its the stone that caused the problem ....?

 

[Al@Lifetiles]

What has this to do with Anhydrite screeds? Surely that would have been the same with cement screed with stone. Its the stone that caused the problem ....?

Obviously didn't make my point clear.
The bond between ditra and screed was perfect.
I only mentioned the stone as that was why I had to lift ditra.
I am not familiar with Epoxy primers or gypsum based adhesives so my only question, given the result I had with cement based products, is why do I need them?
I'm totally open to new products and find it all very interesting but I do wonder if things can be over thought some times.
I hope my point is clear

 

[Lee@emctiles]

Just a little bit more info on the TileMaster Anhyfix adhesive that is now out

Broken Link Removed

Also a useful Anhyfix Technical Guide

[DLMURL]http://www.tiletown.co.uk/published/39/resources/documents/TileMaster%20Anhyfix%20Technical%20Guide.pdf[/DLMURL]

 

[DHTiling]

Nice one lee.


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[Gazzer]

Got some Anhyfix to try out next week. It will be interesting to see what its like.