Which floor to start tiling from in bathroom with small window?

Your wall tiles should be centred on the window, but all floors should be centred on the room if possible with a full or near full tile at the walls. This keeps wastage to a minimum. Where a shower tray is involved, most times it is advisable to start the flooring with a full tile coming off the shower tray. This gives a clean edge around the shower tray and makes sealing much easier.

As a rule of thumb for most walls, you either centralised the wall space, or you pick a feature on the wall, like a window in your case, and centralise that. You can either start with a joint in the centre, or the middle of your tile, whichever gives you the biggest cuts in the majority of the areas. This is a general rule and doesn’t always apply.

Hi, This can take some time to set out for a DIYer, the first rule of thumb I was taught Is to try setting out the the walls from a centre line, if the desired tile size or pattern your tiles are being applied in leaves you with unsightly cuts either around the window or at either side of the walls (taking into account other obstacles to cut around on other walls in the bathroom, door frames, extraction fan holes, shaver sockets ect) the position of the tiles will need to be adjusted to either full tiles or reasonable sized cuts around the window, at either side of the wall and at the top and bottom of the wall if necessary, once your 100% sure the position of the tiles you have worked out are correct and look good, apply a STRAIGHT batton to the wall at the height of either your full tile or reasonable cut from the floor plus the desired grout joint size, use a spirit level to ensure the batton is level and the tiles you apply above the batton will remain level, if the window has a reveal you can cut a batton to size and apply it to the top of the reveal so your cuts around the top of the window reveal will have something to sit on while the adhesive sets, also ensure the cuts around the reveal are straight and level for ease of applying finishing trim and tiling the reveal itself, once the tiles above the batton have set In place remove the batton and then apply the bottom cuts or full tiles, have a cupper while they dry, grout, wash, polish. Hope I've been helpful. Cheers, Tom

Centring on a window is good advice, make sure you choose wisely on whether a full tile or a grout line is centred on the window. This can be decided by the width of tiles around the window, or if either option looks OK, at both walls. In fact, if the shower is attached on the window wall, the look of the tiles in the shower enclosure corner can matter more, especially if the tiles are large. While I agree that most tilers will align tiles with the edge of a shower tray, as it is quicker, if the tray is curved then this leads to difficult cuts, and can in any case lead to thin strips in the corner. When it comes to floors, mist people notice the floor tiles when they enter the room, then notice walls thereafter, so centre tiles on the door (assuming you can tile!).