hi i am new to diy field
my plan-hardibacker in shower area then matting(maybe homelux)then marble tiles on top

can anyone recommend products for adhesives/grout pls
are mapei the best?or bal etc-also which product in their range as there r so many different types keraquick/rapidset etc

any info appreciated thx

Is it for wall tiling or floor tiling in the shower area.
Is the matting you require a tanking system.
What size are your marble tiles and how thick are they.
Mapei is a great product and a fast set flexible white adhesive would be my choice but you may require something that sets a little slower.
You should get a few more replies with a little more information.
Thanks for the thread and enjoy your project.

hi timeless john-thx for the reply- more info as requested
tiling for walls
tanking system-maybe homelux membrane one(wetdecs website is still down)
marble tiles approx 14mm thick about 350by350

do i have to worry about compatibility between the products
and is screwfix shop best place to buy mapei range as cant find many stockists
thx

Tilegiant stock mapei as does B and Q tradedesk.

If you are using hardie backer boards for the walls you do not need to use a tanking membrane as it a fully waterproof product - Just make sure you seal and tape any joins and corners.
The thickness of the marble is important for the weight ratios for the subsurface you are tiling onto - but 14mm will be fine for Cement boards.
Mapei is available from most good tile suppliers (as per Diamond) and the cost of this product has to be cost effective re :where else you can buy it and transport/time to go and pick it up.
Pleased you got back and keep asking!

Do you mean fully water resistant john..? as in it will not deteriorate with water ingression..

If a full water proof installation is needed then you can either use a membrane over the hardi or use another brand of backer board.. something like marmox or wedi and then tape the joints with waterproof tape.