First Time Limestone Floor - Tile Advice

[J Sid]

assuming they get fixed correctly, what about the cleaning and sealing procedure @Makone

 

[Stef]

See - I don't get it with some of you folk - I have fixed thousands of metres of stone without decouplers, many times directly in a sand and cement bed.

All you have to do is make sure is that everything you do is compatible with your workflow.

& here's a limestone floor fixed to a screed without a decoupler, all be it a badly laid screed.
I have repaired this floor 3 times, they were told at install to decouple but I'm only a daft tiler, what do I know.

 

[Spare Tool]

& here's a limestone floor fixed to a screed without a decoupler, all be it a badly laid screed.
I have repaired this floor 3 times, they were told at install to decouple but I'm only a daft tiler, what do I know.

View attachment 81773 View attachment 81774 View attachment 81775 View attachment 81776 View attachment 81777 View attachment 81778 View attachment 81779

...and here's another

 

[Stef]

...and here's another View attachment 81780

Stone is too soft to fit without decoupling it from the substrate.

 

[Italy]

Anti-fracture Matting for Floors Subject to Limited Movement | Tilemaster Adhesives

thanks marc.
tile master. there is no in Italy.
similar products. There are ?
mapei seen. but it seems not. specific like tilemaster

 

[Camper]

The Anhydrate-Screed needs to be prepped properly!

1) Calcium-Carbide Moister measurement test. The moisture can't exceed 0.5% (with UFH 0.3%)
2) Laitence layer removed
3) Prime
4) Tiling can begin
5)Decoupling is not needed, to avoid cracking(longevity) movement joints need to be installed correctly!

 

[Bill]

Stone is too soft to fit without decoupling it from the substrate.

nonsense...s'pose the Egyptians were wrong too?

 

[Bill]

& here's a limestone floor fixed to a screed without a decoupler, all be it a badly laid screed.
I have repaired this floor 3 times, they were told at install to decouple but I'm only a daft tiler, what do I know.

So this, in your own opinion, was a badly laid screed....so maybe that was the problem and not the actual fixing?

 

[Stef]

nonsense...s'pose the Egyptians were wrong too?

& how did they fix???
They fixed on top of a layer of sand that acted as a decoupler.

 

[Italy]

& how did they fix???
They fixed on top of a layer of sand that acted as a decoupler.

exact

 

[Stef]

Tom go on the Schluter course you may be surprised as what you could learn there.
The guy that designed Ditra realised how tiling of old had lasted as long & that was to decouple it from the ground with a layer of sand.

 

[Camper]

If the screed was installed properly it already is decoupled (With styrofoam sheets instead of sand). With or without Ditra you still need to install movement joints. This is the reason for the cracks in the pictures above ( NO movement joints).

 

[Bill]

Tom go on the Schluter course you may be surprised as what you could learn there.
The guy that designed Ditra realised how tiling of old had lasted as long & that was to decouple it from the ground with a layer of sand.

Not all did that. I have fixed onto suspended timber with sand and cement and had no problems....it is how you fix them that matters. I wish we had mobile phones 30 years ago that took photos!

 

[Bill]

Sorry I have no before or during photos but here is one I did not long ago...soft as turkish ceramics..... no decoupler fixed in sand and cement onto a concrete base......

 

[Stef]

If the screed was installed properly it already is decoupled (With styrofoam sheets instead of sand). With or without Ditra you still need to install movement joints. This is the reason for the cracks in the pictures above ( NO movement joints).

"If the screed is installed properly"
If every screed was fitted this way then there would be no problem, that's where the decoupler comes into its own.
My pictures above are nothing to do with a movement join not being fitted.
No run is more than 3m long & is broken across the door ways, it was a badly fitted screed.