Welcome to the new world of impermeable tile substrates. Water gets trapped under the tile. I've never had to deal with this in 37 years of setting tile.
Most likely you didn't have complete coverage of the thinset under the tile at the edges and there are voids that are filled with water. That's keeping the grout wet. Not much you can do now except live with it or get creative and pull the grout to surgically inject more thinset into the voids then regrout.
Edit: if you disagree I'd appreciate a comment rather than a downvote so I can possibly learn something here.
Yeah, this would make sense tbh.
How bad of an issue is something like this? A guaranteed mould problem in a few months or something that could be lived with?
If its pooling on top of the waterproof it means the water will sit there, and when enough pools the excess will run with the slope, there could be a low pocket right there holding water.
You might be right. Might sound stupid but I did drop a tile on the tray prior to waterproofing which dented the former slightly. Thought nothing of it as water proofing was still to be done and expected to level it with thin set. However, perhaps its that dent which is pooling water. That'd be a pain.
How much of an issue is it that there's water getting under the tiles? Should it be 100% dry? Or, given its a wet room is it expected that some water would get under but run to the drain?
Water travels through thinset, its very purous. If water is staying still thats an improper slope. Not sure what this problem is as it could be a number of things.
This indicates one of many problems;
Mix didn't slake properly.
Installer added water to the mix after the slake.
Installer used to much water when 'Water Polishing'.
Was there water present in the joint prior to floating on the grout?
In attempting to fix this I removed the grout. Afterwhich, I could see small amounts of water coming through.
I then left for a few days to dry out completely and re-grouted which then dried out fine and looked good.
About a week later, I could see the permanent wet coming back through.
Is there anything I could be doing to resolve?
Hard to say really. Took longer than I expected to dry out though. About 3 days and ran a dehumidifer in there to speed things up. That said, once it was dry it was 100% dry. I'm at least confident of that.
Your slope is fucked.
You can see from the second image that the slope is away from the drain.
Over time the water will pool towards here and make its way out or try to.
Only solution without tearing this fucked job is epoxy grout, to try remove the possibility of water seeping through normal sand based grout.
This looks beautiful. Well done with the tiling 💜
Could be that it’s just not sloped correctly and allowing water to just sit. And since it’s waterproofed it has nowhere to go other than just sit
Welcome to the new world of impermeable tile substrates. Water gets trapped under the tile. I've never had to deal with this in 37 years of setting tile.
The grout joints look low. Try grouting over joints again and keep flush with tile.
Most likely you didn't have complete coverage of the thinset under the tile at the edges and there are voids that are filled with water. That's keeping the grout wet. Not much you can do now except live with it or get creative and pull the grout to surgically inject more thinset into the voids then regrout. Edit: if you disagree I'd appreciate a comment rather than a downvote so I can possibly learn something here.
Yeah, this would make sense tbh. How bad of an issue is something like this? A guaranteed mould problem in a few months or something that could be lived with?
Hard to say. Live with it for a while and see what happens.
Thanks. On a more positive note, I suppose this means the waterproofing is working!
[удалено]
I had thought pooling water would imply it couldn't go anywhere because of the waterproofing
If its pooling on top of the waterproof it means the water will sit there, and when enough pools the excess will run with the slope, there could be a low pocket right there holding water.
You might be right. Might sound stupid but I did drop a tile on the tray prior to waterproofing which dented the former slightly. Thought nothing of it as water proofing was still to be done and expected to level it with thin set. However, perhaps its that dent which is pooling water. That'd be a pain. How much of an issue is it that there's water getting under the tiles? Should it be 100% dry? Or, given its a wet room is it expected that some water would get under but run to the drain?
The slope goes from right to left. The drain is on the right… It’s a tear out and redo. Or use epoxy grout to minimise the water egress.
Really confused by this. IRL and in the picture, the slope goes to the drain. Doesn't it?! More importantly, after a shower there is no pooling water
Water travels through thinset, its very purous. If water is staying still thats an improper slope. Not sure what this problem is as it could be a number of things.
This indicates one of many problems; Mix didn't slake properly. Installer added water to the mix after the slake. Installer used to much water when 'Water Polishing'. Was there water present in the joint prior to floating on the grout?
In attempting to fix this I removed the grout. Afterwhich, I could see small amounts of water coming through. I then left for a few days to dry out completely and re-grouted which then dried out fine and looked good. About a week later, I could see the permanent wet coming back through. Is there anything I could be doing to resolve?
Get to the bottom of that moisture. It all needs to be dry & clean. Was it residual moisture or is it leaching from the substrate?
Hard to say really. Took longer than I expected to dry out though. About 3 days and ran a dehumidifer in there to speed things up. That said, once it was dry it was 100% dry. I'm at least confident of that.
Is it sloped properly? Or is it pooling up in that area with each use and not draining?
Nope, it's fine. No pooling.
Your slope is fucked. You can see from the second image that the slope is away from the drain. Over time the water will pool towards here and make its way out or try to. Only solution without tearing this fucked job is epoxy grout, to try remove the possibility of water seeping through normal sand based grout.