Hi all I hope you can help?

I (as forum name suggests) am a carpenter, who does tiling every know and then when attached to jobs I am working on, so please excuse if technical jargon not quite right. Anyway here is my scenario which I would like some feed back and a point in the right directon: A customer has asked me to tile the walls in there en-suite (not power shower) When the building work was being done I persuaded them to have Hardi 12mm in the shower area which I fitted.
The ladies Father who works in a tile shop started tiling, probably 20 tiles on wall, but hasn't returned so they got fed up waiting! He has not Hardi taped the joints and has started half way up the wall which i don't normally do. The adhesive they want me to use as I guess was supplied cheap is Bostik Techniik Flexi AA (ready mixed-sorry I know you chaps don't like it!) I propose to use a thin bed solid bed trowel. The rest of the walls are bare new skimmed plasterboard on studwork. Other than any points in general, these are my specific questions:
1: Even though the Father supplied a tanking kit, he has not used it, maybe he was only going to use if bare plasterboard. Should the Hardi be tanked?
2: Is the bostik fit for purpose?
3: Trowel stated ok?
4: Should I prime either substrates with APD?
5: Should I worry about the fact I know parts of the Hardi have not been scrimmed?

I would really apreciate anyone taking the time to reply.

Kind regards,

Rich

If it's only 20 tiles, can you not take them off and make a fresh start?
You will then be able to tape the Hardi joints. There is no need to tank the Hardi boards and if you check the adhesive tub, it will probably say that it is self priming so no need for the APD either.

It's not the best adhesive to use but as long as you ensure a full contact when bedding the tiles you should be okay.

Oh BTW, welcome to the forum.

Hi and welcome

I would do as the captain said coz he outranks me and knows his stuff bythe wayWoodsy ta from Alby parts (private)

Originally Posted by albyshellshear

I would do as the captain said coz he outranks me and knows his stuff bythe wayWoodsy ta from Alby parts (private)

LOL Alby. I'm not sure that I actually outrank anyone on here. I learn something new here every day .

hi

Thanks for the prompt replies. R

strip the tiles off and start again Rich. tape the joints as you say and set out the tiles properly. Are they only ceramic and not large format. Tried to look at the data sheet for your addy but you have to register and too late in the day for that lol
Flooring and tiling products for the professional, marketed under the brands of Laybond, Biscem, Technik, Bostik and Evo-Sport.

Hi,

Yes they are ceramics, not large format. I will check the exact size before starting and post.

Many thanks.

Rich

dump the adh and get some cement based

Hi rich and welcome

I would start again and tape the joints