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I'm curious whenever I have had to tile over existing tile I just grind off the glaze with a dustless cup grinder. How is eco prim better?
 

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Carpe Diem
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Eco Prim is designed to grip a tiled surface. There's no need to grind tile before using. It's better because it is faster, cleaner than grinding and gives a great surface for thinset to grip to when installing the new tile.

You will more easily remove thinset from atop a tiled surface than you will remove Eco Prim, scuffed surface or not. I've gone through almost 20 gallons of Eco Prim and it's an incredible product. I have not used it to install tile over tile....not something I believe in doing but as a primer/bonding agent, it's the cat's ass.
 

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angus242 said:
Eco Prim is designed to grip a tiled surface. There's no need to grind tile before using. It's better because it is faster, cleaner than grinding and gives a great surface for thinset to grip to when installing the new tile. You will more easily remove thinset from atop a tiled surface than you will remove Eco Prim, scuffed surface or not. I've gone through almost 20 gallons of Eco Prim and it's an incredible product. I have not used it to install tile over tile....not something I believe in doing but as a primer/bonding agent, it's the cat's ass.
Is this for real?
 

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It's not a waterproofing like AquaDefense is. You need to make sure any concrete surface is under MVER 5lb/1000 sq ft and it's good to go. But you won't use it on a shower pan.

It can be used as a bonding primer when tiling over a gypsum floor.
 

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Discussion Starter · #17 · (Edited)
Here you go. Finished this week.

I'm averse to new products mostly but I called Mapie and checked here. I've scarified in the past too.

It is an amazing product after it sets up --- how it sticks / grip to the glazed surface. I used 2 coats by the way.
 

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I've used it a few times on small bath floors. Floors have all been solid with no cracks.

I belt sand the tile to scratch the glaze and to remove the cleaning products.

I've ground off glaze,too. Eco is so much nicer.
Just making sure I understand what you are saying. I was a little confused on what you said you do. Are you saying you belt sand the tile to remove the glaze and then ECO?

Your last statement sounded like you were comparing grinding and ECO as two separate methods, but the belt sanding was in conjunction with ECO.
 

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I have a tile job in a basement with concrete floors where carpet was pulled up. There was some glue residue in pores of concrete. I applied one coat of eco prim grip but seems to not be completly gray- can see through some of it. Do I really need to add a second coat to make completely not see through?
 
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