got bathroom job costomer wants old tiles tiled over he bought ardal tub addy is this ok to use to tile over tiles, tile market told him thats fine and sold him 4 tubs what do you think.the tiles are ceramic 200mmx400mm by 8mm thick but he dosent whant to change it!

If hes adament he wants you to use that, then you could get a disclaimer. what are the tiles fixed like which youll be tiling over? Will you end up with problems like coming too far like with architrives or even not being able to turn the taps on

Never heard of Ardal, do you mean Ardex?

Would a disclaimer stand up in court? I'd have thought, as a professional tradesman, that you have a 'Duty of Care' to the customer.

Not sure never really had issues like this, if your not comfortable using that addy then dont do the job

yes sorry ardex

tiles are well on no probs there and ardechives are fine just not sure about using tub addy

If it was D30 and you left it long enough for the adhesive to dry thoroughly before grouting you will probably be ok. The tiles of the size you fixed will slow down the evaporation of the moisture from adhesive. this is where any problem would arise, and why cement based adhesive would be better.

The real issue is, are the current tiles firmly fixed and will you be exceeding the weight recommendations for the wall substrate? Can you guarantee the whole lot won't come down as you don't know how well the previous tiles have been fixed?

if your not sure it might be worth ringing the manufacturer and asking them. but ive personally never head of that stuff. if the customers not gonna take your advice you might aswell just walk away its not worth it.

I would say those tiles are too big for tubbed addy.....they will take ages to dry and it also depends what the surface of the exisisting tiles are...if they are glazed finish then tubbed addy is no good anyway...

Originally Posted by village tiling

if your not sure it might be worth ringing the manufacturer and asking them. but ive personally never head of that stuff. if the customers not gonna take your advice you might aswell just walk away its not worth it.

What, Ardex?

Tile market sell Ardel, not ARDEX. It is not the same stuff at all and the quality like the price is not even close.
If thats what the customer wants to do then walk, ive used Ardel on the odd kitchen splashback, its poor at best.
Walk away it might hold the tiles up fpr a while but give them a tap in a day or so and you will get the hollow feeling!!!
Dont do it.

Again, tile market sont sell ARDEX its ARDEL and cheep imposter
(IMHO).

Ardal is crap from what I've heard. It's from the same manufacturer as Bostik, and while I like Bostik's silicone, I don't like their other products, as far as I've tried them anyways.

Other than that, I pretty much agree with Grumpy.

I always recommend removing old tiles first, as there's no way of knowing what condition the substrate is in if you don't, and how well the old tiles are stuck to it.

I would not use a dispersion adhesive when tiling onto old tiles.

Flexi bagged is the only way to go for that.

By the way, what's up with customers picking materials? Can't you give them shopping lists if they insist on getting the materials? I'd never allow my customers to pick materials.

From my little knoledge its more the substrate that would be in question here wether you are going to exceed the max weight that it can hold, we have been told that a plasterd wall as a rule of thumb should not be tile on tiled as more than likely the max weight would be exceeded ( 20 kilos m2) please correct me if im wrong

Originally Posted by grumpygrouter

What, Ardex?

No ADEL.