I am about to go and dig up my SLC - rebag it and return it to Weber!

[The Legend; Phil Hobson RIP]

Hugo, as above, use a staff. Find your highest point set your laser height to whatever mark a staff ( just like using a dumpy level) set dots to this level all around the floor (grid of levels) I don't use batons, the runners in my pics are polymer sand and cement, left to set. I always put some rapid set adhesive in the mix, to send it off fast.

Using this method you can go from 0 to 30mm, Fill in the bays, (I work to 2m bays) with slc. Then when floor is poured and cured, you can remove runners and replace with slc. Or if you feel confident the are solid leave them in. The same way I was taught To render/ screed, by screed I mean sand and cement screed, not slc

 

[andy8758]

That looks nice there Phil

What you say about mixing ratios to stiffness makes perfect sense, but again I've said this a number of times, I trusted the manufacturer to give me sound technical advice on this. That is probably my biggest mistake in this instance. Had we had this conversation before I would have bought extra bags and probably battened it out as Phil did his, rather than stiffen up the mix.

I have tried following these "manufacturers recommendations" - now I make my own mind up (lol). It reminds me of my wife cooking - she never uses scales to weigh, or a measuring spoon to measure - she pours and when the consistency is right, she bakes. And it tastes good after!

 

[andy8758]

Hi Andy, I suppose that I am one of the crinkly old sages, am I?:yikes::lol:

Yes.

:lol::lol::lol::lol::lol:

 

[hillhead]

When i'm leveling i'm working it about my helper is mixing away and this system works well and takes no time to get floor set.
I remember doing a big house 5 years or so ago when there was 170m2 to be leveled,
we were busy in the bathrooms and the joiner on site told the customer that he would level the floors for me.
This was a big job so i let him at it as the customer and him were friends.
Wheelbarrow loads of leveler is all i seen for most of a day.
Two days later i was lifting at least 40% of it with the same wheelbarrow, blowing in different areas, i think they skimped on primer or something.

 

[The Legend; Phil Hobson RIP]

Hugo, if you look at my pics, I know they are not very clear. The problem I had on this job was the floor fell away from the exterior of the conservatory by 30mm. AS I was using 1m x 500mm tiles, I knew I had to get it flat. By taking the highest point and setting my levels to that, (much the same as the screw method) but if you look closely, you will see my runners go around the perimeters too. That way if you fill each bay one at a time, the slc is contained to that bay untill it is full. As you did, pull off excess slc with your edge, into next bay, and so on. I hope this makes sense

I know it sounds strange in type, but it really does work. Each to their own:lol:

 

[cornish_crofter]

Thank you all very much for your inputs. Loads for me to think of. Phil, you were obviously taught very well, and I can see why you would have used sand/cement ridges in that job when the floor ran out by 30mm! Battons wouldn't have achieved very much as the SLC would have just run out from underneath.

As my floor doesn't run out that much I suspect I will probably go down the batten route. I will have to channel into the existing SLC to sit them horizontal in some areas, but this will help be get a near flat and near level floor - a process I need to concentrate on.

I think it's fair that you should all know that Weber have been absolutely brilliant. They have free issued a number of bags of SLC to me to correct the problem, and have gone further than that. I feel a bit guilty for the choice of title now.

A huge amount of effort on on their part and that of CTD in Plymouth, who I bought the stuff from has helped me considerably. Very often the metal of a manufacturer shows in how they tackle a problem.

Weber have demonstrated how they tackle issues around issues surrounding product or product support. They are the only tile adhesive company that I have had first hand experience with in this respect. Whilst we expect others may respond well in certain curcumstances, we as a forum now know that Weber well.

I would highly recommend Weber as a company that stands by their product. I look forward to using more of their products in the future.

 

[doug boardley]

Was just gonna mention that I used 6 bags of their slc today and found it very nice to work with, I'll certainly be using it more in the future

 

[cornish_crofter]

Now I know how it works I can rate it as well.

 

[Ajax123]

Hi Crofter. I am always being told that to be suitable to receive tiles a substrate should be SR1 in terms of surface regularity. BS8204 Part1 table 4 lays this out in figures. SR1 means that if you lay a 2m straight edge on the floor under its own weight there should be no more than 3mm deviation from the underside of the edge. If you have a 2m level put it on the floor and try and slide a £1 coin underneath it. The £1 is 3.15mm thick - I would not argue over 0.15mm so that will give you a good guide. It sounds to me like you are beating yourself up for no reason. Fill in the unfilled area and if you do find the £1 coin slides underneath the edge you can either re-level the lot if it is really bad using a 3mm depth of leveller or you could re-level localised areas

 

[cornish_crofter]

Alan.

I think you may have a point there. Thank you for posting.

Whilst I'm here, I have asked Dave if he would be so kind as to put an addendum to my opening post - Post #1 to the effect that Weber have worked to resolve the issue over misinformation. There is another thread on how they've done that.