Browse Forums DIY, Home Maintenance & Repair No, I even have sections of narrowness where the tiles won't slide up any further. When I manage some spare time, I might play around with the first DIY part of my… 7 5041 Yep, efflorescence as mentioned above. You could look to clean it with a "acid" based cleaner and then seal with a penetrating sealer. This may not stop it entirely but… 3 5258 1 16136 |