Tile on to Gypsum screed (gyvlon low latance)

[proview1122]

I just called the tech line for schluter and they do not advise the use of to stick ditra mat to gypum screeds as they have not tested it and there for can not recommend it there recommendation was to use Ardex primer and Ardex adhesive. :smilewinkgrin:

well I was just about to do the order for £1600 worth of gear to do the job now you've made me think / worry / pull hair out again. I was just getting my head round the problem and thought it was solved.

If I was not using ditra then the gypsum adhesive would be the way to go and it would stick well to the screed and tiles

I think Schlüter are just covering their arse and have not tested long term compatibility with gypsum addy
what todo what todo

its now wonder no one feels confident with this screed

 

[The D]

Tel:
+ 44 (0) 1530 813396 give the tech line a call its the best way

 

[proview1122]

Tel:
+ 44 (0) 1530 813396 give the tech line a call its the best way

just spoke to them they don't as you say recommend using gypsum addy but did agree that they had not tested its use they could only recommend what they know is ok ardex primer and ardex addy

interestingly I rang granfix re their csa addy and their technical bloke also did not recommend csa to stick matting down and to use primmer and cement addy

really am loosing hair now

 

[The D]

not good is it

 

[Spud]

I just called the tech line for schluter and they do not advise the use of gypsum adhesives to stick ditra mat to gypsum screeds as they have not tested it and there for can not recommend it there recommendation was to use Ardex primer and Ardex adhesive. :smilewinkgrin:

well done Deano

 

[The D]

Place your bets View attachment 48239

 

[Spud]

Gypsum adhesives arent covered in the british standards yet call mapei technical or bal technical or ardex or any of the leading brands and follow their specification, at least if any thing goes wrong you have shown due dilligence and have a specification form the adhesive company good luck with the job

 

[Ajax123]

Gypsum adhesives arent covered in the british standards yet call mapei technical or bal technical or ardex or any of the leading brands and follow their specification, at least if any thing goes wrong you have shown due dilligence and have a specification form the adhesive company good luck with the job

That depends on how you define cement.

 

[bugs183]

Don't follow Lilley's website prices, phone them up, Schluter are very strict about how people advertise prices on the net, i'm certain you'd have got it cheaper.
As for the Anhydrite screed situation with Ditra, you can't win.
Gypsum adhesives stick to gypsum, but not well to Porcelain or Ditra. Cement based adhesive stick well to concrete, Ditra and Porcelain, but its a huge risk following what Mapei and Bal say.
If it goes wrong what do they pay for, the cost of the adhesive, or the cost of moving furniture, pulling up tiles, cleaning the floor, then retiling the whole floor again, unlikely.
Not worth the risk, and it is a big risk to take.

 

[Ajax123]

It is not for schluter, dural,or anyone else to say whether a particular adhesive does or does not work unless they have tested it themselves. They do not guarantee the performance of the adhesive. They make the uncoupling membrane and that is it. That is the only bit they are responsible for. If they make a commercial decision to test and guarantee a particular material then fine but that does NOT mean that other materials do not work. The best they can do is to comment that they have not tested it. It is not a case that they do not recomend gypsum adhesives it is a case that they CANNOT Recomend. There is a big difference. This non recomendation does not mean it does not work. They cannot say it does ot work because they do not know.

It is for the adhesive manufacturer to say what his adhesive will and will not stick to. It is for them to guarantee the performance of their adhesive. Whether it contains cement, gypsum or flipping porridge oats makes not difference to schluter or bal or ardex whatsoever unless they make the adhesive. It is for the adhesive manufacturer to test it if they see fit. They don't even have to do this to make a recomendation about the material they make. The adhesive manufacturers make the adhesives not schluter.