Limestone tiles water marks days after being laid - TilersForums.com

[Leigh]

Hi I’m looking for some advice regarding some limestone floor tiles we are laying. They are coming up with water marks that don’t seem to be drying after around 5 days. They were laid on a bed of white adhesive which is fully across the tiles not just the corners. The floor was coated with pva.

Any advice on why this has happened and if the water marks will dry eventually would be great

 

[Just Rizzle]

have u pictures and what was used to seal tiles.
also pva primer concernes me

 

[Qwerty]

Um, not quite sure where to start with this one. PVA is a huge no no. What adhesive was used and onto what substrate?

 

[Leigh]

have u pictures and what was used to seal tiles.
also pva primer concernes me

have u pictures and what was used to seal tiles.
also pva primer concernes me

They haven’t been sealed yet, the shop advised to seal once after they’ve been laid then again after grouting. Is the pva the cause?

 

[Leigh]

Um, not quite sure where to start with this one. PVA is a huge no no. What adhesive was used and onto what substrate?

White flex fibre from Topps tiles, the salesman said this was the one to use. They are laid onto levelling compound as the floor was uneven. Is the pva the problem?

 

[Spare Tool]

I had a thread up a while ago about limestone that had been blobbed down on a window cill by a builder and @Paul C. came up with this..

 

[Dumbo]

What makes you think it's water.
Is your adhesive slow or fast set .
Is it honed and filled limestone and have you been backfilling the tiles .

 

[CJ]

If it’s slow set, it can take an age to totally dry. Also, As mentioned, PVA is a no no......

 

[Leigh]

What makes you think it's water.
Is your adhesive slow or fast set .
Is it honed and filled limestone and have you been backfilling the tiles .

It looks like water, what else could it be?
Slow set
I’m not sure on the last question so possibly not

 

[Leigh]

I had a thread up a while ago about limestone that had been blobbed down on a window cill by a builder and @Paul C. came up with this..

This says not to use on limestone on the product description, should I still use it?

 

[Leigh]

If it’s slow set, it can take an age to totally dry. Also, As mentioned, PVA is a no no......

I now have the proper primer for the floor so there will be no more ppv

It’s just a question on what to do with the first half of the tiles. Should I take them up and start again or will they dry out eventually

 

[Dumbo]

It looks like water, what else could it be?
Slow set
I’m not sure on the last question so possibly not

Forget the last question , i. wasnt thinking straight and started thinking travertine

 

[CJ]

I’d leave it for a few days, don’t grout, get some ventilation going.

Also, how long after self levelling was it tiled?

 

[Just Rizzle]

have you not used a decoupling mat?

 

[Leigh]

have you not used a decoupling mat?

I’d leave it for a few days, don’t grout, get some ventilation going.

Also, how long after self levelling was it tiled?

2 days after. It’s been down around 5 days so far with no improvement