Thanks for the responses!
After research I'm planning on installing the KERDI boards as the tanking system, seems to get really good reviews here - the ensuite is only 2 x 1.5 so relatively small. The Mrs has chosen the tiles that are 600 x 300 porcelain tiles which I've worked out at around 25 kg/per m2.
So I'm wondering what thickness is best to use? Reading up it seems to suggest 10mm onto skimmed walls fixing with dot and dab and mechanical fixings after whereas the 5mm boards can be fixed onto studs, the KERDI boards come in 9 & 12.5 - would 9mm be OK to fix with tile adhesive? I've got 3 skimmed masonry walls and one stud wall to tank. 🙂
This forum has been so helpful, an amazing amount of information so cheers!!
Reply to the thread, titled "Just Another Guy looking for Wetroom Advice" which is posted in Tanking and Wetrooms on Tilers Forums.