tiles on chipboard

[nino]

Otherwise, you turn to the area's salesperson at Ardex and ask who uses it in your area, S48 is relatively expensive, 100 SEK/kg maybe more, so it would be best if you could borrow a bag and only buy what you use.

 

[FredrikR]

I was told by an Ardex salesperson/contact person that it wouldn't work... At the time, it was on cc30, floor chipboard, 34mm spacing with underfloor heating, and a layer of gypsum screwed on cc20. And this in an 8m2 hallway. I got so tired that I went into the neighboring store and left with a bag of Höganäs lightweight fix, and the salesperson was convinced it would work. But I've heard a lot of good things about Ardex otherwise. The one I talked to on the phone left something to be desired.

 

[nino]

Ardex is a German company and the word complaint does not exist
Everything is with both belt and suspenders, they only stand for their own tested constructions that they know work.

 

[Zwännzån]

Bumping up this old thread as I am facing something similar myself. I currently have floor chipboard where a 20mm solid floor will be laid. In front of the tile stove, a ca 60x40 large tile will be placed as a hearth pad, which is 9mm thick. Is it still ardex s48 that's recommended? Was wondering if it would be possible to glue with tec7 or something similar otherwise?

Then there's the matter of "underlay" as well. Need to build up 11-12 mm to get it level.