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Discuss Self Levelling Compound issue (pictures) in the Tiling Advice | Tile Forum area at TilersForums. USA and UK Tiling Forum

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So this is my first time using SLC, it's Mapei ULTRAPLAN 3240. Once I was coming to the end of the mix I notice a sludge at the bottom, I assume because I've mixed too fast *Facepalm. I mixed half a 25kg bag. Any advice would be greatly appreciated. I'm worried the mixed might be too wet now...

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Q

Qwerty

Lesson learned. I probably should have mixed with a smaller whisk too. Is this mix likely to fail?

Knowing that SLC very well I would say it wont likely fail but it certainly wont be as strong a mix as if the whole bag was mixed with a paddle mixer. I presume it was very wet when your poured it?
 
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JordanLincs
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Knowing that SLC very well I would say it wont likely fail but it certainly wont be as strong a mix as if the whole bag was mixed with a paddle mixer. I presume it was very wet when your poured it?

Not sure what very wet is as this is my first time, it seemed fairly thick. I noticed the top layer of SLC was runny and there was a sludge underneath the top web layer
 
F

Flintstone

Time will tell really if it sets right, if it was too wet it could have a weak layer on the top once set
 

Boggs

TF
Arms
Esteemed
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I’ve never use this Mapei slc before, but it does look a bit cloudy, like it’s not mixed right.

As said above always mix the whole bag, but I tend to hold back a handful in the bag as it just allows the mix to be a bit better at flowing without affecting its strength.
 
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JordanLincs
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I’ve never use this Mapei slc before, but it does look a bit cloudy, like it’s not mixed right.

As said above always mix the whole bag, but I tend to hold back a handful in the bag as it just allows the mix to be a bit better at flowing without affecting its strength.

Appreciate your advice, thankyou.

Although, I was very careful when halfing the bag, I had weighing scales. Still recommend to use the whole bag? Do you use the whole bag as the fibres may have settled at the bottom?
 

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