Wall not perpendicular

Hello, we are currently building (or partially having built) a house, in the bathroom we have just now installed an interior wall made of Ytong, unfortunately we only just realized that it is not exactly parallel to the opposite wall by about 3 cm over 3 meters. I think this will cause problems with tiling, as the tiles will probably have to be laid in a wedge shape. Do you perhaps know a trick or how this can be concealed? The plasterer probably won't be able to compensate for this? Best regards.

Just lay the tiles at a 30 degree angle, then it should hardly be noticeable....

I think a good tiler can still work with the floor tiles, even if they are laid straight. 3cm is still within tolerance, even if it were a wall built by a professional. Of course, it also depends on the length. 3cm over 50m length is a bigger difference than 3cm over 2 meters length. You just have to point out the issue to the tiler. You can conceal it, for example, with skirting boards and/or a wider silicone joint. I wouldn't see it as that dramatic now :cool: