HELP !! Tiling on a fresh chap - cement-water for past dries too fast

[werner]

I have a very big problem

When tiling on a fresh chap, then sometimes, sometimes not, it happens that the cement - water mixture put over the chap for paste the tiles, dries very, very fast, within seconds, so that there is no time to pass f.ex. a comb, and it isn't possible to adjust the tiles ( joints, level ). Also there have tiles, if one put the cement - water mixture on the backside, it dries also immediately.

This problem messes up the whole work.

How one can resolve that, that this don't dries so fast ?

This becomes better, if one put some past / colle into the cement - water mixture. However, many house owners don't want to spend money for buy this. And, in earlier times, people also worked only with cement, water, sand, and it worked.

 

[Chalker]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Sounds like rapid set in a hot climate to me. Could do with an interpreter for the above post.

 

[Brian the Tile]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

hi werner,your post is not very easy to understand,but from what i can make out the adhesive is drying out to quick on a sand and cement screed ,if that is what you are meaning ,try using standard set adhesive, may help you

 

[Martyn Leeds]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Typing while tiling results in bad grammer

 

[Gazzer]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

I think you will there is a language barrier here, the way I am reading this is that the tiles are being fitted , sand and cement style ?

 

[AliGage]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Werner, I've jyst read through some of your other posts and realise you havent always got given an answer.

Can I ask where are you from? If we can understand you and your posts a bit better I'm sure we could help you with your questions.
From your posts you appear quite thorough.

 

[steve187]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

not sure if he is using a cement or a adhesive slurry onto a screed, be the screed wet, dry or semi dry i'm not sure

 

[Diamond Pool Finishers]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Werner it sound like you need to soak the tiles & the surface to be tiled with water several times to kill the suction or thirsty background just before you tile ,then it will be OK....

 

[werner]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

I don't have always internet, so I can respond only today. I try to write shorter frases.

First, I make a chap, from ciment : sand appr. 1 to 10 or 15 , with less than half water as ciment.

Then I put tiles. For this, I throw a cement-water mixture over the fresh chap. Then I put the tile over it.

Sometimes (depending exactly on what, I dont know, but I would like to know) that cement-water mixture, however, dries very fast - within seconds - so it's not possible to put the tile over it before it dried, much less to shift the tile for adjust joints or level.

Also if I put some cement - water mixture on the backside of the tile, it dries immediately.

This can be resolved, by putting a little bit colle / past into the cement - water mixture. However, many owners don't want to spend money to buy this, and thus want one use only cement and water.

Really, in old times didn't have yet colle, and everybody used ciment-water only, putting it on fresh chaps, and then the tile(s) on top of that. Thus, I suppose I make something wrong.

This should know / respond old tilers, from the time before people started to use past / colle, from the time where people used ciment only.


Anyway, this is a very big problem for me, that the ciment-water contact skin dries so quickly, makes impossible any good work.

 

[White Room]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Could'nt you soak the tiles in water for a bit before fixing so it dos'nt dry so quick on contact....

 

[werner]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

The ciment-water contact layer do not drying fast on contact with the tile, but before, when I put it on the chap.

But, wet the chap as solution, I think is stupid, because the chap for tiling (in contrast to beton) we make dry in order that is not curving during drying.

Perhaps there is something wrong how I mix the ciment-water, or I can put mix something into it that it dries more slowly (perhaps sand or sugar ) ? Or which tiler from the old times know what to do here

 

[White Room]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

The ciment-water contact layer do not drying fast on contact with the tile, but before, when I put it on the chap.

But, wet the chap as solution, I think is stupid, because the chap for tiling (in contrast to beton) we make dry in order that is not curving during drying.

Perhaps there is something wrong how I mix the ciment-water, or I can put mix something into it that it dries more slowly (perhaps sand or sugar ) ? Or which tiler from the old times know what to do here

No need to be so rude....

 

[Ian]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Surely a plasticiser will extend the working time.

 

[Ajax123]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

. It sounds to me like you are not priming your chap (screed). The idea of priming is to reduce the level of suction from the adhesive into the chap. If you do not prime the chap sucks the water from the adhesive paste and it dries very quickly. Use a simple acrylic primer. Beton generally will have a higher moisture content and a less porous surface so will not have the same level of suction. It also sounds like you might be mixing your adhesive on the dry side so maybe have a look at the instructions t make sure you are adding enough water. Don't start putting additives in especially not sugar as this could cause you all sorts of issues.

 

[AliGage]

Re: HELP !! Tiling on a fresh chap - cement-water for past dries too f

Still a little difficult to understand but agree with Ajax. Sounds like your "chap" is ultra porous and sucking any moisture out of your adhesive. The same could be happening when you spread on the tile too. Depending on what the tile is, but that could be drawing in the moisture from the addy too.
Wet the back of the tile and prime the floor to try and avoid this.