recent job

[Dontiler]

hello
Today started new bathroom renovation, and just want to share why grout is cracking sometimes ,

 

[White Room]

the top picture is almost a solid bed with the floor tile but what is the substrate, the dot and dab says it all on the wall tiles:yikes:

 

[Dontiler]

the top picture is almost a solid bed with the floor tile but what is the substrate, the dot and dab says it all on the wall tiles:yikes:

It's pourable concrete, but surface is really dusty soft and porous, primer would helped in this situation i guess

 

[White Room]

Do you mean one of the gypsum screeds

 

[Dontiler]

Do you mean one of the gypsum screeds

yes i think it is

 

[doug boardley]

the laitence can't have been removed either

 

[Dontiler]

i did sample today, primed bit of floor with primer G, and glued ''ditra'' mating, will try tomorrow to peal off, will see if it strong enough :20:

 

[david campbell]

they pictures are shocking,and something as simple as priming the floor would have saved all the hassle

 

[DHTiling]

If that is an anhydrite floor in a bathroom then i advise it is tanked..

Gypsum floors do not like getting overly wet.

 

[Dontiler]

hello
Friday finished this job, was 2 layers of plasterboard so replaced 1 layer with hardibacker, I primed floor and then used uncoupling membrane on anhydrite screed,
hope you like it
Thanks