Over 4 Living Spaces this roof Balcony required a high detail sheet membrane system.  Over Stairs and two strip drains the Ardex Weldtec was installed.  https://ardexaustralia.com/product/ardex-wpm-1000/ 

At Aquaseal we specialise in these high risk jobs where failure is not an option.  The client informed us that the other builders and trades wouldn't touch it, too much risk.  We did this job without stress and combined with the expert carpentry and rebuilding ( 2 layers of tiles on chipboard and ply! ) it came up perfect.  Just one of the many jobs we do specialising in providing our clients with premium sheet membrane systems for now and the future.  We have bonded tiles to the stairs and floating tiles on pedestals with rubber membrane protectors over the large rear areas. 

"When we build, let us think that we build forever. Let it not be for present delight nor for present use alone. Let it be such work as our descendants will thank us for"

John Ruskin