Browse Forums Building Standards; Getting It Right! Thanks splashers, that makes sense. The waterproofing guy used this Davco product, I will raise the issue with builder and hopefully get resolved with him - if not… 2 13090 Hi everyone, Have just put a shower in the laundry and after only using it 2-3 times have noticed staining on the grout. The tiles were glued onto a concrete wall after… 0 5644 Have some black tiles in our bathroom on one feature wall laid on top of the waterproofing. What I think is efflorescence or white chalky looking grout has turned the… 0 2043 |