Which tile adhesive to use with Schluter Ditra

[Franer]

So should be ok with this? S1

 

[LM]

So should be ok with this? S1View attachment 110989

If you can buy Evo Stik locally go for their standard set OPF which is now an S1 also.
A rapid set adhesive will make your task much harder as it’ll put you under pressure with the adhesive setting to quickly.
Be sure to back butter the tiles with the flat side of the trowel.

 

[Dave]

Hi again, I copied this from Shluter UK - "Immediately after the Schlüter®-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."
So they are saying it doesn't matter but the US Shluter site has a whole article about modified/unmodified, I find that odd in that they are talking about the same product. Have you used modified mortar on Ditra without any problems in the past? Thanks again for your help

Yes i have today. Lol.
We’ve had thus conversation on here a few yrs back as i too seen the info on an American tile forum , so I telephoned schluter uk and they told me that you just use what suits the substrate etc etc. The American site is geared towards American based adhesives

 

[Wesley]

I recently tried Ardex AF200 adhesive under the ditra matting onto concrete for the time. I found it simple to use, stayed “open” long enough to allow me to position the matting correctly and gave good results over a 30sqM floor

 

[Franer]

So got this e-mail back from Shluter UK this morning. You guys were correct, apologies for doubting. So any flexible mortar is fine.

Thank you for your email enquiry.

The words modified and unmodified mortars relates to products used in the U.S.A.

Schlüter®-DITRA 25 can be adhered to a suitable substrate using a cement based C2/C2F classification adhesive applied using a 4 x 4 mm notched trowel.

You can also use the same cement based adhesive above Schlüter®-DITRA 25 with a maximum bed of 10 mm.

Please see our installation guide linked below:

Schlüter®-DITRA 25

Should you require any further assistance, please do not hesitate to contact us.

Yours sincerely


Sarah Meller
Technical Services
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Schlüter-Systems Ltd | Units 3-5 Bardon 22 Industrial Estate
Beveridge Lane | Coalville | Leicestershire | LE67 1TE
Tel: +44 (0) 1530 813396 | Fax: +44 (0) 1530 813376

 

[Old Mod]

Thank you for posting the result of your enquiry, so often we’re left wondering the outcome.

You do realise several hundred tilers just breathed a sigh of relief! 😁

thank you.

 

[Dave]

The phrase “ I told you so “ 😂😂

 

[Dillygaff]

Hi , what reason are you using Ditra for firstly and as for adhesive, yes your info is American based , schluter uk say modified adhesive is fine.

Apparently its flexible for laying the ditra and standard for fixing the tiles as the ditra is designed to take the movement and the tiles are set on the dovetail of the matting. Makes sense to me I'm not a tiler. ?

 

[Chris1]

Hi , what reason are you using Ditra for firstly and as for adhesive, yes your info is American based , schluter uk say modified adhesive is fine.

schluter states when sticking ditra to concrete use a unmodified adhesive and when using ditra on top of plywood use MODIFIED

 

[Dave]

schluter states when sticking ditra to concrete use a unmodified adhesive and when using ditra on top of plywood use

It’s been discussed clearly enough above.