tiling on top of terracotta - TilersForums.com

[Ric]

going to be tiling on top of terracotta floor soon, not sure if its flat or level as not seen yet. what would anyone recommend? i shall check for soundness etc just wondering if i need to put levelling compound down or is cleaning up and priming alone enough?...thanks

 

[GazTech]

going to be tiling on top of terracotta floor soon, not sure if its flat or level as not seen yet. what would anyone recommend? i shall check for soundness etc just wondering if i need to put levelling compound down or is cleaning up and priming alone enough?...thanks

It depends on the nature of the cotta Rik, some are very curved and you may have many ridges in between high spots.If badly uneven then use SLC,to take out the worst.....Gaz

 

[Ric]

It depends on the nature of the cotta Rik, some are very curved and you may have many ridges in between high spots.If badly uneven then use SLC,to take out the worst.....Gaz

Thanks Gaz, something i didn't think of....just shows always best to ask

 

[DHTiling]

You will need to remove all surface contaminants as well as old polish etc etc...along with checking for soundness etc....

 

[Droopy]

You will need to remove all surface contaminants as well as old polish etc etc...along with checking for soundness etc....

What he said.

 

[Gazzer]

I did this a few years back in a large conservatory. I had all the issues that have been raised here but i over came them by going over the surface with a large belt sander that i have and this took a layer off and any sealer/polish that was on the terracota.
I then used a primer and a SLC to finish off with. No comebacks at all.
It was a dusty job though, good job i had the dust extractor clipped onto the sander.

 

[Ric]

thanks guys....would you use dedicated cleaner specific to acid based tiles or will something like a degreaser do?

 

[GazTech]

thanks guys....would you use dedicated cleaner specific to acid based tiles or will something like a degreaser do?

Sugarsoap, or HG Extra will do nicely, cotta is very soft and a screwdriver will easily score the surface for you to attain a good key......Gaz :yes:

 

[DHTiling]

i would use lithofin wexa>> much better than hg extra on removing old polishes etc......

Lithofin Wexa is an alkaline combination cleaner with a very broad range of action. Through a combination of special cleaning components with solvents, most cleaning problems are solved. Lithofin Wexa dissolves old layers of wax, polishes, floor care products, sealing substances, permanent shine emulsions, oil and grease spots, soot, rubber and tar stains..