Home brew Self levelling

[andyinthepeaks]

Hi all, bit of advice sought...

Just finished levelling a floor with self-levelling compound. Worked fine, got the hang of it in a small stairwell (8m2). Now I've got a much larger room to do - one problem, the cost of the stuff!

I was buying 25kg bags for about £13 and used 7 due to the floor (poured concrete) being pretty bad (up to 40mm off). The large room is the same and will probably take 30+ bags.

What I want to do is level to an extent with "something else" like a cement/sand mix, and then use the self-level compound for the last 10mm or so.

Can't seem to find what mix I might use to make something like a self-level compound. I don't care about setting time, the house is unoccupied I can leave it for a few days.....

Any suggestions what mix I might use?

 

[meadowhog]

You can make the compound go further by adding builders sand. I have used this succesfully and doubled the coverage.

As for the deeper parts you would need someone to verify this but using something called slurry would do it. I think its a 2:1 cement sand mix. not tried it only read about it and stand to be corrected.