my tuff 2 tray has been screwed down and in most areas its pretty flush with the floor but on certain areas its approx 2mm higher than the floor. unfortunately there's nothing i can do now as it's all been plumbed in.

it hasn't affected the gradient though and water is still carried away properly. i'm just wondering if i can correct this when it comes to the tiling by maybe using a slightly bigger notched trowel on the floor area when applying the adhesive?

You will be able to gain 2mm easy enough with the adhesive as you say..

cheers dave thats reassuring to know

What is the substrate surrounding the tuff former?
Is it tanked?
What type of adhesive are you using?

If your on wood floor you will lose the 2mm easy when you lay your membrane. No stress it will be good

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it's 12mm wbp plywood over 22mm chipboard. hopefully gonna tank sunday so will try and lose the 1-2mm with the adhesive.

Originally Posted by roberto1490

it's 12mm wbp plywood over 22mm chipboard. hopefully gonna tank sunday so will try and lose the 1-2mm with the adhesive.

I was kind of assuming you had already sorted the tanking...

Do as wetdecs says and use the 3mm membrane..this will make up height and easier to work down that up, if you see what i mean....

make sure you seal all joints

ok. is this all the joins in my plasterboard and the expansion gaps on my plywood floor?

In the tanking membranes ..

just to clarify, i seal all the plasterboard joins/expansion gaps between plywood boards/gap between floor and former/wall to ceiling transitions/corners/pipes etc with flexi tape then durabase wp over floor and shower walls?