means mixing up your mix without adding water, hence dry mix  

wet mix is your normal mix as before + water

ss

If you are mixing by hand then turn your sand and cement together dry firstly and then sprinkle water into the mix while continually turning the mix together so that you do not get very wet patches. It becomes a semi dry or screed mix when you can squeeze a fistfull in your hand and it will bind together rather than crumble away in the hand.

Thanks for the replies, much appreciated.

At least now I know what sort of consistency I should be aiming for.

The surface I am laying this on is very level (marine ply), so doesnt really need concrete to level it, BUT the instuctions say i MUST bed it on concrete

I did wonder about silicon, although the stuff I have used around the bath is flexible & I can sort of imagine the tray wobbling about on it (maybe)  

Adheasive sounds like a possible option, got any recommendations?

All I really want to do is secure it firmly & make sure it never moves!!!

Cheers!

Chris (first & last time I fit a shower!)  

I would lay the tray in position 'dry' and then check for level.

If it is very near perfect then use silicone, small blobs all over base and a line onto bottom of sides.

The manufacturers can be misleading in their advice and will always find fault with your installation techniques to invalidate the warranty. I've been fitting stone resin for many years now and know a lot of Bathroom fitters that practise in the same ways I do, we are all domestic installers who wouldnt dream of site work and have never had a problem fitting in this way.

To me using sand /cement as a fixing method is a joke, how can it possibly stand up to the daily usage that it's put under?

LOL!

"My method"  ???  It's not my idea  

Mortar on chipboard or ply?  Bloody daft if you ask me.

It's those damn instructions though...............

If the tray cracks and it's not installed as per manufacturers instructions then the cost of replacement is all down to you  

Imagine a fully tiled luxury bathroom with fully fitted shower enclosure etc etc....... and the tray cracks    If it's installed as per instructions then it's either the manufacturer or the customer who pays, not me.

If the rep sees it's on silicone or some other 'non approved' method then there will be a sharp intake of breath  "Oooooooo deeeeeeeer, it doesn't seem to be bedded on sand/cement.  Sorry guys but it's not a manufacturing fault, it's an installation fault"

Installer --------------------->  


lol  

Just go to bed and stop fretting  

lol