Natural Stone Limestone tiles colour change - Tile Advice

[Dumbo]

Jerry, didn't someone post on here that dural recommend S2? Read it somewhere
But I agree wouldn't use a S2 on mat.

I never do , no failures yet

 

[Jagweb]

Why did you use Grey Adhesive? Should be white.
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If its limestone ,should of been white adhesive ,watch out for shadowing ,porous tiles ,

If the adhesive caused the clouding is that permanent? Will they dry out or does the sealant need to come off? Is there any hope they will go back to the original colour or will they need to come up? Have ready about leeching in limestone?

If we're going to pick on adhesive , shouldn't of used s2 on dural

Why would you not use an S2 on dural?

 

[J Sid]

The grey adhesive would not normally stain the stone.
Will it dry out and return to original colour, should do a bit over time.
If you a S2 on plastic uncoupling membrane the S2 sticks to the mat. These mats work by the adhesive locking into to mat and not sticking to them.

 

[Lithofin BOB]

you could strip one tile in a discreet area, trapped moisture can lead to water marking which can be irreversible . If the one tile lightens over a few days or you place heat over it to see if it lightens. strip the rest and re seal once the floor regains the colour.

Sealers can highlight colour too, test on an un laid tile, seal it - no moisture involved, if it darkens, could be your sealer showing natural Colours , poss change to a water based ,which may not change the colour

 

[Spare Tool]

Yey Lithuanian Bob's back. . .

 

[Flintstone]

What brand of sealer was used ? As they don't all trap moisture ..

 

[Lithofin BOB]

Yey Lithuanian Bob's back. . .

New pad, can’t work this
New forum can’t work this either
May take a bit of time
[automerge]1567713550[/automerge]
Sealers , impregnators ,state breathable \ to a degree!!!!!

 

[J Sid]

Evening Bob, hope your well.
Yes a few changes

 

[Jagweb]

What brand of sealer was used ? As they don't all trap moisture ..

It was this one....? It wasnt buffed and mutiple coats were aplied on the same day. Also have been told today the expansion joints weren't necessary (on a decoupling mat and over underfloor heating but the screed under all that is 10 years old), the grout is too fine (powdery prob wall grout) and the whole lot needs to come up and be replaced.

 

[Flintstone]

That looks pretty terrible workmanship.