Hi

After laying a 3.5m floor on Tues, I was getting ready to grout the floor today after finishing the Walls when I noticed that the tiles were hollow sounding so had a closer look a noticed that a tile was moving, so got a screwdriver and lifted a tile then an other and another........

When the tiles were lifted there was no adheisive on the tile but only on the floor, the Tiles are 'Mont Blanc' 600x300 from Tile Giant , the floor is Plywood on top of Chipboard

I have used Mapei products for a few years now and have not no issue until now
, any ideas ?

Phoned technical help and they are sending out someone to have a look

cheers

Tubs

Hi Tubs..

Size of trowel..?

Did you primer ply..?

Has the tile a profiled back and did you flat skim the tile back before bedding.?

10 mm trowel used , ply was done by joiner so not sure if primed underneath and sides, never back skimmed cause my mix was nice and wet and the tiles dont have deep profiles in the back !!

I don't suppose the tiles have a dusty layer on the underside?

On that size tile with a 10mm sqaure notch, i would have back skimmed for full contact.. it might just be a minimum contact error and adhesive could not hold the tiles.. The rep will know when he comes out.. please do let us know the outcome.

Funny one there tubs, should have stuck but i hate plywood now as 2 weeks ago i replaced 6 tiles that i stuck to ply.
Poor quality ply everywhere but you say the tile didn't stick? weird. maybe too wet the mix?
Any funny temperatures?

Tiles were not dusty they had a thin peice of paper between them

Originally Posted by hillhead

Funny one there tubs, should have stuck but i hate plywood now as 2 weeks ago i replaced 6 tiles that i stuck to ply.
Poor quality ply everywhere but you say the tile didn't stick? weird. maybe too wet the mix?
Any funny temperatures?

No funny temps, not too wet either, I did no different to any other mix I usually do , will get some pics up

Always back skim. It costs very little.

Originally Posted by Sir Ramic

Always back skim. It costs very little.

I know but didnt expect this, no adheiseive on tile what so ever

Sounds like either dust on the tile or the adhesive may have skinned over before fixing to me.

out of date maybe or bad batch possibly then?

Originally Posted by Sir Ramic

Sounds like either dust on the tile or the adhesive may have skinned over before fixing to me.

Definently no skin on ady

Originally Posted by hillhead

out of date maybe or bad batch possibly then?

Have you checked the bag for manufacture date but the date is mostly for Chromium V and if no lumps in the bag then it will set fine.. it is either a bond problem or adhesive contact.. I am sure the Rep will help you on this matter, we can guess all day but we cannot see what you have.

You did take the paper off the back......?

I have only had this happen once in a doorway and i knew the addy had gone over and skinned.

hahah of course mate !!