Ready mixed adhesive grout problem

[genoveg]

Hi,

I'm a neewbie to the forum and although not a complete professional I have been refurbishing properties for some time and have taken to doing my own tiling for the last few years with great success.

However, I have hit snag and am after some advice.....recently renovated a basement shower room which suffered a serious leak ( turns out previous owners decided to hide a manhole under some timber and lion which blocked and leaked and...well you can guess the rest!!!)

I stripped out all back to concrete floor and installed a recessed tile manhole cover and screeded and self levelled in preparation for tiling using 330 x 330 tiles.

Now, for some time I have always used powdered adhesive and grout but customer had purchased a ready mixed adhesive and grout which I wasn't too keen on but as it was such as small area I bit the bullet and thought it wold be ok.

Now, drying time quoted is 48 hours but 2 days later and there was still some flex so I left a further 2 days and it seemed fine, so I went ahead and grouted.

Now, on working on floor sealing edges and re-installing wc, a couple of tiles have 'popped' and are flexing, with water penetrating under.....

Will these tiles set over time or will I have to remove and relay with preferred powdered cement product?

Couple of people have told be the stuff just doesn't cure especially if slightly more than a thin bed applied but am loathe to rip up tiles unless I have too.

Any help appreciated

G

 

[Gazzer]

How long was the screed left to dry before tiling.
Ready mixed is not good stuff.
Looks like its a Rip it up and start again vote for me.

 

[DHTiling]

Basically it is a dispersion adhesive and when applied thicker than say 3mm it will take ages to set.
But you have used it on a recessed manhole and that will be the problem, it will not bond to the metal


Sent from my iPhone

 

[Andy Allen]

i wouldn't of used it.......imo, its about as much use as a mud flap on a turtle.

it takes days to go off, and if you lay it to thick it will never fully cure.

 

[The Legend; Phil Hobson RIP]

As above and:welcome:

 

[White Room]

All to the above..Hi and welcome.

 

[tommyzooom]

Ready mixed needs to air dry, with the manhole you have effectively put tha adhesive into a steel bucket, and then put a tile lid on it, it may never set fully

 

[jindru]

i agree about never drying.i spoke to manufacturers techys and ready mixed dries around exposed edge first. this seals the remainder of the adhesive from air drying.result on a non porous surface is that it will never go off.i learned the hard way. lift the tiles ,start again. best of luck.