Is it ok to leave SBR slurry to set before tiling...?.

[John the tile]

I just want to know after ive brushed it on how long should i leave it before tiling,....

Will it be ok to let it set and dry for a few hours.?

Thanks

 

[DHTiling]

What are you using the slurry for..?

 

[John the tile]

Concrete floor with some unremovable bitumen..

Ive just spoke to a mapei tech guy who says its best to lay some mapei 2 part latex plan before tiling. He did also say the bitumen MUST come off, (ive got alot of it off - no loose stuff left)...

He says to use mapei eco prime first, but the stuff is well expensive.......

So will the sbr slurry be ok on top of the substrate prior to the latex plan ?

Thanks

 

[kilty55]

hi john,why exactly do you need to lay latexplan is the floor need ing levelled?

 

[John the tile]

No. the latex was to be used prior to tiling because of the remains of bitumen on the floor, .....

Im sure the tech guy said if you have to tile onto bitumen its best to use a latex product because of its flexibility or Ive read it on here somewhere, before tiling.

 

[kilty55]

if i have to tile to bitumed residue that will not come off i use the slurry coat

i wouldnt buy latexplan

i use flexi addy too

 

[hillhead]

The slurry should be enough if there is sand in it or a bit of adhesive and the floor is level.
I have a floor on next week with stubborn bitumen on it too.
I'm going to slurry it and let it harden up before tiling it.

 

[John the tile]

Thanks folks.. thats exactly what ill do.

 

[John the tile]

just wanted to run past you a scenario of the floor needing levelling? same as above though, with regards to the bitumen. Sbr slurry/cement.

would you let it go tacky before laying some slc down rather than letting it go hard?.

Ta

 

[kilty55]

hi john,you will be fine with flexible addy instead of this latex plan onto the slurry

 

[John the tile]

Thanks Kilty55

If the floor does need levelling though, let say 10mm is it best to let the slurry go tacky prior to pouring water based slc or latex based slc, ?

On a side note what substrates is latex based slc usually used for?

 

[kilty55]

yeah if you need to level then use as advised latex

let it go off yes dont pour on slc on top if its still wet

latex slc is for flexibility
so ufh jobs and timber floors etc

 

[John the tile]

Thanks kilty

ill let the slurry go hard before laying any slc.... Are we talking a few hours?

I wonder why the mapei guy says use latex rather than water based slc?

 

[RDTiling]

I found this thread and it seems to answer my question, however I thought I'd double check.

I had advice last week from Geoff of Plan Tec Tiling (Thanks again Geoff!) regarding an sbr slurry coat over a grano floor. The floor looked ok (level wise) but after getting my straight edge out there are a couple of areas that could do with levelling, so I'm proposing to apply weber SLC over the whole area.

is it still correct to let the slurry mix fully set before apply the SLC? It's looking like I'll be putting the slurry coat down on Friday and then looking to put the SLC either Saturday afternoon or Sunday.

i usually use weber for most things but my local CTD don't seem to stock webers sbr, so will probably end up using Bal Bond SBR.

Thanks all,
Rich

 

[Qwerty]

Hi rich. Glad to be of some assistance.

You will be fine later the following day to apply SLC. Yes, let slurry dry fully.
Don't forget to take photos and post them

 

[RDTiling]

Thanks again [MENTION=13257]Plan Tec Tiling[/MENTION]

Well, I was down tonight and went at the floor with a grinder and a diamond cupped blade to try and remove the paint.

the floor is even more uneven than i thought so the grinder has had better results on some areas than others. See pic attached. There is now definitely a need to SLC the floor before I tile it.

The grey areas are back to the grano, the red bits are where the paint is being very stubborn. Should it be okay to sbr over things as they are and then apply SLC or should I try and get more of the paint off?

Rich