MAPEI Ultracolor Plus -JASMINE

[ross9807]

Help!

I am having trouble with MAPEI Ultracolor Plus but only with jasmine.

i dont have a lot of experience but i've grouted with biege from the same company and had no problems.

But with jasmine...... i grouted an area and after it was patchy and some areas were white, infact most of it was white. So i called mapei they said that i had started too early sponging it down or maybe used too much water. -both sound about right.
(this part was actually with keracolor ff)

i thought this was cos of keracolor so i started using ultracolor plus, but this time i measeured it exactly and waited quite a while and put minimum water on to wash it off. and i got the same **** maybe not as white.

then i rang mapei again, i thought i had followed all the rules exactly (measure-mix-wait-mix etc) but the bloke told me, that its because i'm mixing it by hand. and i need to use a paddle. -i was taught that this isnt really needed. especally for a couple of m2.

I have read the other thread about a bloke who had exactly the same problem. and in the end he got it so so looking.

But were there any conclusions? is jasmine just a sensitive grout???

Now my biggest problem is how to put it right,

fuga fresca was suggested, but the bloke from mapei told me i have to all the edges of every tile. is this true?

also does anyone have any tips for using it?? and do u think it will work??

Thanks,

Ross

ps. also how do you know when to give it that first rub over? finger test? or is that for the polishing?

pps. i've just discovered this site and i can't believe how good it is.....
be prepared to have a weekly question

 

[Time's Ran Out]

Are you mixing the whole bag of grout dry first?
I find that Jasmin tends to have some red colourants in the dry mix and these need to be fully mixed - even if you ultimately dont use all the bag.
Again I find at times it can dry quite light in colour but never patchy if correctly mixed.
Mapei grout for me is

 

[faithhealer]

never had a problem with this colour grout. Always use a paddle to mix those red bits in that tj mentioned

 

[DHTiling]

Washing off at the wrong stage can cause polymer shading..

You have to let the grout get to a certain stage and then you can wash off...

Mapei were right to much water and excessive over rubbing of the sponge etc will cause polymer shading and dries with a whiteness colour to it, that is the polymers being brought to the surface.

This thread will help explain>> Understanding Efflorescence and polymer/latex leaching.

 

[ross9807]

great link thanks!!

i've now corrected the problem with mapei fuga fresca.

but still with mapei ultra colour plus, i've had the same problem again.

this time i done everything by the rules.

-measured exactly
-mixed with paddle (slowly)
-let it lie
-mixed with paddle
-then applied
-left for 30 mins
-wiped off with minimal water and be careful not to over rub

and i still got the same ****. any ideas??

the only thing i can think of is that after i wipe it off with a sponge, i leave it for a bit, and then when the access grout appears on the tiles or when it dries a bit, i go over it again to clean it.........maybe then wiping this powdery grout off the tile into the grout lines.

what do you think?

also if you add the exact water and grout to mix it, its a really really dry mix

 

[faithhealer]

I don't give it a final clean until the grout is dry in the joints but honestly can't say if this is your problem

 

[david campbell]

i've never had this problem with mapei grouts only a few of the bal tend to do this(cocoa,black) leaving for 30mins would make it really hard to was any excess off as i find bal cures quickest of all the grouts,are you soaking the sponge or using a damp one to wipe off?

 

[Dave Ramsden]

i've never had this problem with mapei grouts only a few of the bal tend to do this(cocoa,black) leaving for 30mins would make it really hard to was any excess off as i find bal cures quickest of all the grouts,are you soaking the sponge or using a damp one to wipe off?

My poor arms say Butech colorstuk dries faster! Live n learn

 

[ross9807]

before i was using a wet sponge, now damp, rung out as much as possible and still the same result

 

[david campbell]

beats me!

use a different colour or make:lol:

 

[The Legend; Phil Hobson RIP]

Only used Jasmine Ultra colour a couple of times, will be interesting to see how this thread pans out. I have some porcelain to do in this next week

 

[DHTiling]

before i was using a wet sponge, now damp, rung out as much as possible and still the same result

How long has the grout been left to dry before you come to this conclusion..?

How long do leave the adhesive before you grout..?

How deep are the grout joints..?

 

[ross9807]

hi

How long has the grout been left to dry before you come to this conclusion..? i've done it a few times, once over night and i saw it the next morning, but others it seems to happen after an hour or so.

How long do leave the adhesive before you grout..? again i've done it a few times, one part 5 days, one part 1 day, one part 3 days.

How deep are the grout joints..? their 2mm wide and fairly deep again it depends, i dont use a trowel but butter each tile and level the wall so in some parts there was 3mm adhesive behind the tile and in other maybe 9mm. theres no adhesive in the joints they go straight back to the wall.

thanks

 

[charlie1]

I have only ever had this problem with granfix a few years ago!, make sure all your tools , bucket, stonge, mixer are really clean and then when wiping off ensure you are using a clean dry towel! all i can think of im afraid

 

[DHTiling]

hi

How long has the grout been left to dry before you come to this conclusion..? i've done it a few times, once over night and i saw it the next morning, but others it seems to happen after an hour or so.

How long do leave the adhesive before you grout..? again i've done it a few times, one part 5 days, one part 1 day, one part 3 days.

How deep are the grout joints..? their 2mm wide and fairly deep again it depends, i dont use a trowel but butter each tile and level the wall so in some parts there was 3mm adhesive behind the tile and in other maybe 9mm. theres no adhesive in the joints they go straight back to the wall.

thanks

The deeper the joint the longer it can take the new wet grout to return to true colour.

So the shallow sections will dry fully a lot quicker than the deep sections..

because the grout is hard, doesn't mean it is fully cured.. Have you returned to a job a week or so after ,to see if the grout has dried uniform in colour..?

I think you will find that it does all dry the same, just in different stages depending on grout joint depth.