Is Ditra an overkill on concrete with ceramic tiles? - TilersForums.com

[bigdave1903]

Hi I'm going out to price a conservatory floor today. Customer wants electric ufh. Floor is concrete. I was going to lay marmox then wires covered in slc. Is ditra overkill or would you use it? Tiles will be either ceramic or porcelain.

 

[hmtiling]

Ditra is overkill with ceramic and porcelain imo. The marmox has decoupling properties. I'd prob use ditra if 200w per m2 and very soft stone

 

[bigdave1903]

Perfect thank you. Do you screw your marmox down too Or do you just glue it down?

 

[hmtiling]

Just adhesive on concrete. I glue and screw to timber.

 

[bigdave1903]

Excellent. Thanks again for your help.

 

[Stef]

Dave do you use CTD up your way??
If you do get the Jackon boards as a lot cheaper than marmox.
It will need to be 10mm boards for sticking to concrete, if any thinner they need fixed with screws & washers.
I wouldn't use Ditra as the thermal boards will give u a bit of decoupling from the base.

 

[bigdave1903]

Dave do you use CTD up your way??
If you do get the Jackon boards as a lot cheaper than marmox.
It will need to be 10mm boards for sticking to concrete, if any thinner they need fixed with screws & washers.
I wouldn't use Ditra as the thermal boards will give u a bit of decoupling from the base.

Perfect cheers. Yeah its ctd I use. They said they only do contract boards and hardi. Never used their contract board before so not sure what it is.

 

[bigdave1903]

Perfect cheers. Yeah its ctd I use. They said they only do contract boards and hardi. Never used their contract board before so not sure what it is.

Sorry stef my mistake. I believe they are jackon boards.

 

[Stef]

Sorry stef my mistake. I believe they are jackon boards.

Yeah they are m8, good to use, I'm using them more & more over Hardie. Easier to handle & cut & as stated they will decouple slightly from the base.

 

[bigdave1903]

Yeah they are m8, good to use, I'm using them more & more over Hardie. Easier to handle & cut & as stated they will decouple slightly from the base.

Nice one. Just been to see it. It's actually a chipboard floor so just going to do the same prep but glue and screw 6mm board.

 

[Flintstone]

Not a floating floor is it ?

 

[bigdave1903]

Not a floating floor is it ?

Nah definitely not. Thats the 1st thing I checked when I saw it.

 

[bigdave1903]

Nah definitely not. Thats the 1st thing I checked when I saw it.

Ok so its back to the drawing board. I've just spoken to the architect and apparently it is a floating floor. He said the joists are 200mm apart. What are my options?

 

[Stef]

Ok so its back to the drawing board. I've just spoken to the architect and apparently it is a floating floor. He said the joists are 200mm apart. What are my options?

Is there much movement in it?
Consensous is not to touch them but I have tiled to floaters as they have been quite rigid without problem.

 

[bigdave1903]

It certainly felt solid when I walked on it. Customer said it wasn't floating but architect confirmed it was.