Wow thanks for the quick response! :shock: :D
The floor has a sort of shallow valley (its high at either side) with the lowest point about 5mm below the bottom of the spirit level.
I've already bought some pre-mixed multi-purpose floor tile adhesive (thinking this would be an easy...
Great forum with lots of good advice, I've had a good look through but couldn't find an answer to my problem......
Doing a bit of a diy spruce up and decided to replace the worn carpet in the porch (93 by 126cm) with ceramic floor tiles...
Pulled up the carpet and underlay and...