Mapei p9 problems

[Tabby Cranks]

Just goes to show , it isn't about slippage it is about coverage for full tensile strength, in the OP owns words he used 8mm trowel on a largish tile with no back skim, tile came away with no coverage on the back, what is there to defend tabby.

And you say you only back skim floors, ok I rest my case on that .

We all have our own fixing methods and personally I will always backskim
To get a better coverage and suction


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I said I only back skim floors, or where the tile has a deep ridge on the back. That would include walls as well. The guy hasn't said this tile has a deep ridge. If the tile has deep ridge, then I'd say an 8mm trowel is probably not man enough and he'd need to back skim, or use a deeper notch.

We have two issues with this guy, one the slippage, that could well be down to poor coverage from an inadeqaute notch. He also says it's not setting. If come Monday that still hasn't set, he has a problem with his addy. IMHO.

Shame we don't have any pictures of what he found.

I do love a debate about fixing methods.

 

[DHTiling]

Lol, it good to debate and do it nicely

My main concern was just with it being porcs

But I am a big p9 user and I know it can n certain tiles/backgrounds take longer to set, after learning this , I switch to rapidset.

I agree, best to wait another day


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[Tabby Cranks]

True, he has a waterproof backgroud too, so that would make the setting process longer.

 

[JLM Tiling]

Right the rooms pretty cold so I think it's a case of slow setting. Had to take a different tile off anyway (fixed it the previous morning, just wasn't happy with it) and it was stuck like REMOVEDto fur, broke it taking it off. I think it was just a case of set time and the coverage was very good. Shoulda taken a pic but didn't think about it at the time. Not liking this fixer error abuse!! Only joking, you've all got good points but like i said the ridges aren't deep and the coverage seemed good when I started. I woulda said anything bigger than 8 mm woulda been excessive, it's not like they weigh a huge amount either. They aren't gonna fall off the wall (I hope!) The rest of the muck has gone off fine, thinking about it now I'd say vitrified porcelain (obviously not very absorbent), waterproof material, cold house all adds up to slow set. When I said the tile was totally clean it wasn't like it was shop clean, it had traces on it. Should have taken a photo cos I can't explain it very well!

 

[JLM Tiling]

Oh yeah I reckon it had only been on the wall about twelve hours. If it's a 16 hour set at twenty degrees then it would still have had some time to go. Wasn't like it was wet soft, it was m

 

[jay]

We all live and learn

 

[JLM Tiling]

Whoops! It was more like it was scrapable. Came off easily but still had to get i'n there with the scraper. Just panicked a bit cos usually use Ardex x77 and find that stuff REMOVED hot and it's an important job to me

 

[jay]

Might be worth a read Broken Link Removed

 

[hillhead]

Temperatures, substrates, good contact etc all make up experience for us all.
We all still learn new things regular and thats what makes this place so sweet.

 

[DHTiling]

Oh yeah I reckon it had only been on the wall about twelve hours. If it's a 16 hour set at twenty degrees then it would still have had some time to go. Wasn't like it was wet soft, it was m

There we go.. no need to panic.. :lol:..

 

[DHTiling]

Oh! and checking in for replies at 20 to 1 in the morning is an addiction and we can help with that as well.:lol:

 

[JLM Tiling]

Ha ha!! Yes it is a bit of a problem!! Well the missus seems to think so anyway!! Cheers for all the help peeps, much appreciated. I'd be lost without this forum I tell you!! Not been in the game long so lacking experience. I'm good with the tools ( in my opinion! ) but yeah still got a very long way to go!!!