My backroom floor has sunk by 65mm over the years (built in 1910). I bought the house 3 months ago and realised straight away that it was out by allot.
The highest to lowest point is about 65mm and it slopes down to the middle from all sides.
Due to cost I'd like to level it myself but could do with some advice.
Should I start with a concrete mix and finish off with 10mm of self levelling, or a sand and cement screed with fibres in it?
The ratios I've found so far confuse the hell out of me.
Cheers in advice guys