Dot & Dab travertine? - Page 2 - TilersForums.co.uk | Tile Forums

**Sir Ramic** · 24-07-2008

Adhesive and grout is water resistant not water proof. Plasterboard is not water proof either....your thoughts are all correct and you should stop them fixing NOW

CJ again · 24-07-2008

They are taking the mick...................no way on earth ANY tiles should be D&D.

Ring up any adhesive company and they will tell you.

Bad Bad practice..............and cheaper for the tiler

**grumpygrouter** · 24-07-2008

Yep, I have to agree with everyone else, deffo a big NO! NO!.

Yes it is porous but you are incorrect about the adhesive being waterproof, it isn't. Hopefully they are putting the tiles onto bare plasterboard and not skimmed, these are heavy tiles I would imagine.

I think you will find (I may be wrong here) that british standards say that adhesive should be applied and combed through with an appropriately sized notched trowel. it will certainly say that on the bag of adhesive!!

spanky · 24-07-2008

12 or 13 responses, all saying the same, yet I am still being told it is ok by the Tiler and the contractor.

Is there any particular reason not too Dot & Dab Travertine (30kg Sqm) onto a plasterboard wall. There is no PVA on the wall, it is bare, new plasterboard.

Thanks

**Fekin** · 24-07-2008

All I can say is what everyones already said, dot and dabbing is not the propper method for any form of tiling, never mind Travertine.
All tiling needs to have adhesive covering the whole rear surface area of the tile, period.

Stand your ground and insist they fix your tiles correctly, and redo what they have botched already, and dont pay a penny until they have fixed their "errors"

And no adhesive company in their right mind will say their product will preform propperly with just dabs of adhesive.

Basically if they are only putting a dab in each corner of the tile then thats the only aread holding the weight of the tile, so if they adhesive covers the whole back of the tile then the weight is shared out over a greater area, meaning they tiles will "should" never fall away from the wall.

If their doing it on floor tiles then within weeks they could all start cracking, maybe sooner.

**Sir Ramic** · 24-07-2008

Lets have details, what adhesive are they using and then we can sort it once and for all.

spanky · 24-07-2008

Adhesive used:

Keraflex Maxi & Ultra Proflex SP Adhesives.

Enc Picture showing what the Tiler says is on the back of each tile.

**Sir Ramic** · 24-07-2008

I am sure neither manufacturer of thos adhesives would say dot and dab is a correct method. i suggest you stop the tiler and ask the manufacturers, Mapei (MAPEI) and Ultra (Instarmac: Highway Maintenance, Streetscape, Flooring and Contract Tiling products and systems) for their advice.
As shown in the picture you have not got full coverage and you are likely to have problems in the future.

spanky · 24-07-2008

Can anyone tell me the reasons you should not do this, the tiles don't appear to want to come off.

**Sir Ramic** · 24-07-2008

Because water will find its way through and due to the voids between the tile and wall caused by not having a full bed of adhesive water may hold and then progress through into the plasterboards which wil then break down and then tiles may come loose. Further more those tiles will be heavy and i would want to be sitting in the bath when 5 dabs of adhesive decide they cant hold the tile any longer.
I could sit here all night telling you how wrong this is but i am getting the feeling you dont want to listen so i am opting out. Hope you get it sorted though.

brummie tiler · 24-07-2008

Im with everybody else. Dot n dab I would never dream of doing it certainly not on Trav. They might be stuck firmly now but what about 6 months down the line......Do the job properly not twice.....

**grumpygrouter** · 24-07-2008

Quote:

Originally Posted by spanky

12 or 13 responses, all saying the same, yet I am still being told it is ok by the Tiler and the contractor.

Is there any particular reason not too Dot & Dab Travertine (30kg Sqm) onto a plasterboard wall. There is no PVA on the wall, it is bare, new plasterboard.

Thanks

This is approaching the safe limit for plasterboard! Add to that what (should be) the correct amount of adhesive, around 3-4kg/m2 and grout then you have issues!

Remind me if we ever we meet not to take a bath or shower in there, I don't want your nice tiles falling onto me.