Bathroom Renovation - Grout sealing.
Question about standard for bathroom remodel and new build.
What kind of grout is standard used and is water proofing liquid membrane or some membrane suppose to be used behind tiles? If grout is just sanded or unsanded grout, based on What I read, is that it should be sealed to prevent water seeping in.
My contractor finished bathroom remodel and the grout was set to cure for more than a week, but he didn't tell me that it wasn't sealed. After 2 weeks of use, the grout isn't drying and started cracking and some of the grout leaked into the bathtub.
And one of the tiles cracked slightly so suspect it could be water already getting behind the adhesive and or the grout mixture having been mixed with too much water or mortar not properly applied.
I am getting my contractor to assess and to discuss, but my main thing here is, my case is that he didn't do the proper job to get it ready for actual use and didn't advise on grout sealing.
What is the standard for new builds and a bathroom remodel?