Moleanos Tiles Looking Stained afterfitting 6 weeks ago

[ronron]

Hi Pebbs, thanks for your feedback, the tiles have now been up 8 weeks, we have had the heating on for 6 weeks, extra heaters in the bathrooms and dehumidifiers, the walls were so hot you could not touch them, yet the marks never changed from what you see now to what was there 7 weeks ago, so i can't believe they are still drying out?

 

[DHTiling]

Ok.. if that is the case then i am inclined to think they are stained ... you will need a meeting with said individuals and discuss the next step and rectifying the situation.

 

[Dan]

As Dave says. Seems they're stained too much time has passed for them to still be holding moisture.

 

[ronron]

Hi Dave,
Meeting everybody today and i think the plan is to take some tiles off, have a look and also send the tiles and adhesive off for testing......

Question, can white adhesive cause this type of staining?

 

[DHTiling]

Not normally but with certain stones, then you must use an adhesive that is suitable for stone use and of a rapid setting type... this will not let moisture ingress for a prolonged time thus causing what you have there...

I can't see what tests they think will help.. imo it is purely wrong adhesive for stone type..moisture sensitive stones require rapid sets.. just my opinion though, so see what they come up with.

 

[Pebbs]

Im following this one with interest, be interesting to find out what their views are at the end. Moleanos does have a long drying out time, but this is only 10mm, Ron what brand of adhesive was it?

Pebbs

 

[ronron]

Hi Pebbs, i have been told that the adhesive used was WEBER Set Plus White, i don't know if that is a rapid setting adhesive or not. Going by Dave's comments above, would WEBER Set Plus White cause this staining?

 

[Pebbs]

Sorry for the late response Ron, yet again I have been run ragged. I've put thousands of m2 of moleanos down on diff contracts and have never seen a white adhesive stain through, but I never specify Weber, so am not au-fait with the complete range. Has there been any change at all on the stone?

Pebbs

 

[ronron]

Hi Pebbs, thanks.
Still no change, the stains are still there, i suspect that they have not used fast setting adhesive, but i am not a tiller so waiting back to see what the results are that were taken away for testing
ron

 

[lucius]

Weber set plus is not a rapid and only sutiable for medium porosity stone.