UK Pro Tiling Training
This official sponsor may provide discounts for members

Discuss What could be causing this? - damp behind tiles? - wet grout in the Tiling Forum | Tile Advice area at TilersForums.com

UK Pro Tiling Training
This official sponsor may provide discounts for members
Joined
May 16, 2019
Messages
37
Reactions
6
Location
Lincs
It looks like water seapage coming through the grout, but cannot feel any wetness. Water pipes are below the tiles pictured. Could it be dampness behind the tiles through poor prep work?. I don't know to be honest, so am purely guessing from logic. This first appeared 2 days ago. (Part of an ongoing issue with poor workmanship/prep work)
 

Attachments

Last edited:
Joined
May 16, 2019
Messages
37
Reactions
6
Location
Lincs
  • Thread Starter Thread Starter
  • #4
Is the discolouration permanent or does it dry out back to its normal colour? Is it in a shower area?
This is new discolouration. It looks like it is wet, so unsure if moisture behind the tile. So far, it has not dried out. There are other areas of discolouration that have been there for a couple of weeks and has been raised. These are new.
The shower is not yet installed.
 

Paul C.

TF
Esteemed
Arms
Joined
Aug 22, 2015
Messages
1,849
Reactions
2,825 18
Location
Kettering, Northamptonshire
If the shower hasn't been used, it's more likely to be inconsistently mixed grout, maybe too wet or washed too soon, or washed with too much water releasing pigments. Take a bit of medium "wet and dry" and gently sand a small patch, see if it goes back to the intended colour, and if it does, keep an eye on it and see if it goes dark again. I think if it was water behind the tile, it would more likely soak the full width of the joint, not just down the sides of it.
 
Joined
May 16, 2019
Messages
37
Reactions
6
Location
Lincs
  • Thread Starter Thread Starter
  • #8
If the shower hasn't been used, it's more likely to be inconsistently mixed grout, maybe too wet or washed too soon, or washed with too much water releasing pigments. Take a bit of medium "wet and dry" and gently sand a small patch, see if it goes back to the intended colour, and if it does, keep an eye on it and see if it goes dark again. I think if it was water behind the tile, it would more likely soak the full width of the joint, not just down the sides of it.
Tiler is coming back tomorrow for 2 days under instructions, so will see what happens. (not much hope anything will change for better, but...)
 

acaciaguy

TF
Arms
Joined
Dec 16, 2014
Messages
838
Reactions
385 1
Location
Warwickshire
I agree with Paul c. If it was a leak it would be wider spread and you would need to take a tile off to investigate. What are the other issues? Are the other places with similar grout issues
 
Joined
May 16, 2019
Messages
37
Reactions
6
Location
Lincs
  • Thread Starter Thread Starter
  • #11
Joined
May 16, 2019
Messages
37
Reactions
6
Location
Lincs
  • Thread Starter Thread Starter
  • #12
I agree with Paul c. If it was a leak it would be wider spread and you would need to take a tile off to investigate. What are the other issues? Are the other places with similar grout issues
The whole bathroom needs ripping out and starting from plastering the walls to make flat, as should have been from the start. Not doing that has left lippage all over, uneven tiling, badly fitted trim, badly cut tiles, uneven tile spacing etc... :(
 

acaciaguy

TF
Arms
Joined
Dec 16, 2014
Messages
838
Reactions
385 1
Location
Warwickshire
The whole bathroom needs ripping out and starting from plastering the walls to make flat, as should have been from the start. Not doing that has left lippage all over, uneven tiling, badly fitted trim, badly cut tiles, uneven tile spacing etc... :(
So sorry to hear that. Where are you based?
 

acaciaguy

TF
Arms
Joined
Dec 16, 2014
Messages
838
Reactions
385 1
Location
Warwickshire
I specialise in rip outs ( a lot here do so I’m not boasting) back to floor and walls for re fits. To be honest. It’s the best way in some situations. I’m in Warwickshire but you will find someone great in this site.
 

Reply to What could be causing this? - damp behind tiles? - wet grout in the Tiling Forum | Tile Advice area at TilersForums.com

Tiling Forum

Get free wall and floor tiling advice from TilersForums.com's Tiling Forum. Both DIY and professional wall and floor tilers use this forum to make sure their tiling is spot on.



Click here to support the forum/remove ads
Mapei Tile Adhesive - Official forum sponsor
This official sponsor may provide discounts for members
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

Use TilersForums.com to find Tiling Jobs or your Local Tilers for free. Get tiling tools at the best prices via the forum.