I've got a utility room and adjoining loo at the rear of our house which have a concrete floor on which I want to lay some vinyl. The floor is a bit uneven so I want to lay a screed to level it. The difference in levels is about 15mm. However I don't want to raise the overall level as it will mean the washing machine won't fit under a worktop etc, (poor planning, I know).
Therefore the screed will go from 0mm to 15 mm. Is there a self levelling screed I can use for this which will stay solid at 1mm or 2mm thick to allow me to lay vinyl on? It's a small area about 1 metre by 2 metres?