Slc problem?

[PJ Tiling]

Ok, builders have slc'd a kitchen floor that I'm supposed to tile. They have used Ultra level it 1, not a brand I'm familiar with according to them they have followed the instructions on the bag.

They sub is an old concrete base which they primed with SBR, mixed as per bag and following the guidelines laid 50mm, then 3 days later laid another 25mm giving a total of 75mm (in the deepest areas). I've spoken to Ultra and they say this is acceptable. This was all done about 2 weeks ago.

Today the plasterers finished and I started cleaning up behind them (as we do) prepping. When scrapping the floor it seems very very soft! So soft I can use my finger nail to scratch into the surface. There's no heating in the house and it is pretty humid due to plastering, also the weather is cold.

I have a couple of ideas but im interested to see if thinking along the right lines.

 

[Spud]

How big is the area

 

[Dave]

Judging by the laitence , I'd say it was over watered...

 

[PJ Tiling]

Area is 18m2....

 

[Spud]

Judging by the laitence , I'd say it was over watered...

thats what I first thought

 

[Dave]

The top looks soft due to not being consolidated , this can be as I said over watering , the heavy aggregate etc sinks leaving the friable top surface.

 

[PJ Tiling]

Any ideas on a way to fix?

 

[Dave]

Remove all the loose and SBR prime and re-level.

 

[Spud]

I would moisture test it as it still looks really green if it has been over watered it will more than likely shrink and crack once the water dries out of it

 

[CJ]

Never had a problem with level-it. If I remember rightly, it's 4.25L of water per bag. As mentioned already, it does look over watered.
It looks like it'll need to all come up. :yikes:

 

[Dave]

What is bugging me is 75mm ffs , why not screed it.

 

[PJ Tiling]

What is bugging me is 75mm ffs , why not screed it.

When I went to look at the job a few weeks ago I said they would be better screeding. For some reason they thought this would be a better idea...:mad2:

 

[Dave]

When I went to look at the job a few weeks ago I said they would be better screeding. For some reason they thought this would be a better idea...:mad2:

It must have cost a small fortune lol lol ...

 

[White Room]

Do they supply a free pair of wellies to walk on the self leveling....

 

[Just Rizzle]

think you need to decouple it go to the shulter web site and read up on ditra decoupling you can fix over green screed with this will slow down curing process but sounds like you need to remove crusty topfirst

 

[Andy Allen]

think you need to decouple it go to the shulter web site and read up on ditra decoupling you can fix over green screed with this will slow down curing process but sounds like you need to remove crusty topfirst

Lol......how did I know you were going to suggest that
Do you sleep with the stuff as well. ..:lol:

 

[Dougs Third Go]

Used Ultra a lot in the past without any probs,, looks like they've over watered it (as has already been said)

 

[Just Rizzle]

Lol......how did I know you were going to suggest that
Do you sleep with the stuff as well. ..:lol:

no but i know the reasons why i recommend it its called FORCE TRANSFER ASSEMBLEY. its a matter of physics. if some one spends there hard earned money on quality tiles they need quality advice on how to fix them.

 

[Ajax123]

Over watered and will take weeks and weeks to dry out....

 

[Andy Allen]

no but i know the reasons why i recommend it its called FORCE TRANSFER ASSEMBLEY. its a matter of physics. if some one spends there hard earned money on quality tiles they need quality advice on how to fix them.

Unless you staple it down...:sofahide:

 

[Dave]

no but i know the reasons why i recommend it its called FORCE TRANSFER ASSEMBLEY. its a matter of physics. if some one spends there hard earned money on quality tiles they need quality advice on how to fix them.

When does that advice start then :lol:........

 

[Lee@emctiles]

What is bugging me is 75mm ffs , why not screed it.

first thing i thought was why not use a 70mm PCS/Delta board?

 

[Just Rizzle]

[/B]
When does that advice start then :lol:........

must be doing all right dave done 3 jobs in last 3 weeks in your town and another one lined up in january:smilewinkgrin:

 

[Dave]

must be doing all right dave done 3 jobs in last 3 weeks in your town and another one lined up in january:smilewinkgrin:

They know no better :lol:...