I wasnt replyin to your post as i agree breaking up rooms can be the better option but if you have to keep the tiles running through the laser square is the biscuit..Wasnt on abou keeping square was on about rooms looking out of wack.
If you tile your kitchen and have to follow into a living room due to room shapes and wall angle you can generally only get one room looking bang on.
Beginning in the kitchen you should work off your eye line which is generally the plinth oposite the door, this can go in fine but that line may leave you with a narrow or angular cut in the lounge ye. Breaking your threasholds allows you to set each room so they all look as they should..............
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