Hi Everyone, I was hoping someone could give me some advice for how I can get some floor tiles in my kitchen. I'm in the process of refitting it with help from my father in law. The original floor was vinyl, on top of a mostly crumbled self levelling cement on top of some very unlevel quarry tiles. So far we've removed the vinyl and the cement, finding mould underneath the vinyl and in a bid to try and level the floor we found that the quarry tiles were sitting on sand. My original plan was to use some mapei self levelling compound. https://www.screwfix.com/p/mapei-ultraplan-3240-self-levelling-compound-25kg/4959f And then this matting from topps tiles. Durabase CI Matting 1m2 | Topps Tiles - https://www.toppstiles.co.uk/tprod8778/durabase-ci-matting-1m2.html And then some ceramic floor tiles from b&q. But I've just tried to measure the height difference and one corner is about 45mm below the level of the highest point. And I'm worried that I'm going to be spending a lot of money trying to bring the floor level enough to tile on. It's not a huge kitchen 6.5m2 but it looks like I might need at least 10 sacks at £20 a pop, just for the levelling compound. I'm also a little unsure about what primer I can use on the quarry tiles before putting the levelling compound down. Can anyone give me some advice on what I should do, or what products I could use? Or even if there is a better solution, or something I've not considered.