Just after ideas on whether this is doable, I really like the look of the shower niche/shelf built into the shower wall. Our shower have large wall tiles that would be perfect size to build a niche in but I have read you shouldn't do it as you would damage the waterproofing behind the tiles. Now I would have thought once you created the niche you would just waterproof that area anyway. Has anyone done this before, or have any tips.