Wall is not square

[towney]

Hi
We are tiling a kitchen between the work top and cupboard units. In one area the work top is about 15mm from the wall.

What are the options to be able to tile up to the worktop?

I was thinking of put a piece of board onto the wall to fill the gap? Or could I use a large amount of tile adhesive and just use that to build get the tile further from the wall? Or do I need to get it skimmed to reduce the gap

Thanks

[ultimatehandyman]

I had exactly the same prob;em a few months back, there must of been 20mm between the worktop and the wall in one corner.

I fixed a piece of plasterboard to bring the wall out using grab adhesive and a couple of screws/wall plugs.