Tanking Alpha Hemi Hydrate Screed

[hmtiling]

Hi all. I've got a wetroom to do with a pumped screed floor and wondering what would be the best method of tanking it. The floor has wet ufh and using silver trav.
Thanks in advance.

 

[hmtiling]

Please don't say Tilesafe

 

[Ajax123]

Same as you would tank any screed. It needs to be dry, sanded, clean and the ufh commissioned and run. Alpha hemi is a type of gypsum based screed.

 

[hmtiling]

Same as you would tank any screed. It needs to be dry, sanded, clean and the ufh commissioned and run. Alpha hemi is a type of gypsum based screed.

Thanks for that.

 

[hmtiling]

I'm imagining that as it's being tanked then cement based adhesive is fine?

 

[Dave]

Same as you would tank any screed. It needs to be dry, sanded, clean and the ufh commissioned and run. Alpha hemi is a type of gypsum based screed.

Evening Alan , might be a membrane tanking method..? And not paste..

 

[Ian]

Funnily enough, I've just done one. Used ditra on the floor and liquid on the walls as they were plasterboard.

 

[hmtiling]

Evening Alan , might be a membrane tanking method..? And not paste..

I was hoping to use a compound and tapes. The tiling is following on into a hallway and another couple of rooms and want to avoid raising the level if possible.

 

[hmtiling]

Funnily enough, I've just done one. Used ditra on the floor and liquid on the walls as they were plasterboard.

Are the tanking compounds not compatible with gypsum screeds?

 

[hmtiling]

Are the tanking compounds not compatible with gypsum screeds?

I know I should be using ditra with the stone anyway but the client won't pay for it. He's agreed to take the risk and put it in writing.