How to Lay Out Tiles Without Thin Cuts at the Wall

Short answer: measure the length you are tiling, divide it by the tile pitch (tile + joint) and look at the remainder. If a thin strip would be left along one wall, move the starting point so the cuts at opposite walls are equal and wide enough. In the 2D planner you choose between the starting points “From the corner”, “Piece in the centre” and “Grout line in the centre” and, before buying, see the number of full and cut pieces, the narrowest cut and the purchase quantity.

1. Measure the room and find the tiled area

Measure each wall in two or three places and note the smallest value, because walls are rarely perfectly parallel. Subtract the perimeter (expansion) gap at the walls: the 2D planner uses 5 mm on each side by default, so a 3.1 × 2.4 m room is tiled over 3.09 × 2.39 m.

The tile pitch is the tile plus one joint: for 60 × 60 cm and a 2 mm joint that is 602 mm. A length of 3090 mm holds 5 full pitches (3010 mm) and leaves 80 mm. That remainder decides what the edge cuts will be.

2. Starting at a wall or a centred layout

When you start at a wall, the first row begins with a full tile at one wall and the whole remainder ends up at the opposite wall. There are the fewest cuts, but the strip at the other wall can be very thin. A centred layout splits the remainder into two equal cuts at both walls. The planner offers two versions: “Piece in the centre” (the room axis runs through the middle of a tile) and “Grout line in the centre” (the axis runs through a joint). Which is better depends on the remainder.

Illustrative 2D planner calculation: floor 3.1 × 2.4 m, 60 × 60 cm tiles, 2 mm joint, 5 mm perimeter gap. Numbers are piece widths in mm; blue are full tiles, yellow cut pieces, red cuts narrower than 50 mm.

Starting point	Edges at the shorter walls	Edges at the longer walls	Full / cut pieces	Narrowest cut
From the corner	80 and 600 mm	584 and 600 mm	15 / 9	80 mm
Piece in the centre	39 and 39 mm	291 and 291 mm	15 / 20	39 mm (10 cuts below 50 mm)
Grout line in the centre	340 and 340 mm	592 and 592 mm	8 / 16	340 mm

How thin can an edge cut be

Centring is not automatically better: in this room “Piece in the centre” leaves 39 mm strips at the shorter walls, which are hard to cut and stand out. “Grout line in the centre” gives 340 mm edges at the shorter walls and 592 mm at the longer ones, with no thin cut at all.

A common recommendation is to avoid cuts smaller than half a tile; the Ceramic Tile Education Foundation cites the US standard ANSI A108.02, under which cuts smaller than half size are usually not made and cut pieces go at the edges of the field. It is not a single rule for every format. The planner does not forbid thin cuts but reports them: the “Narrow cut below” threshold is 50 mm by default and you can raise it, e.g. to 300 mm for half of a 60 cm tile.

3. Format, direction, offset and joint

Format: the remainder is calculated for each format separately, so check the layout again after changing the format.
Direction: for rectangular tiles (e.g. 60 × 30 cm) “Laying direction” sets whether the long side runs horizontally or vertically. Turning them changes the remainders on both axes.
Offset: with offset patterns (1/2, 1/3 …) the edge pieces change from row to row. For long formats (60 cm and more) some manufacturers do not recommend a 1/2 offset; the planner then shows a warning and the manufacturer’s instructions apply.
Joint: a wider joint lengthens the tile pitch. With 5 full pitches, a 3 mm instead of a 2 mm joint moves the last cut by 5 mm.
Manual shift: the “Shift X” and “Shift Y” fields move the whole layout by the entered number of millimetres, e.g. when a joint should run through the middle of a door.

4. Example in the 2D planner step by step

This is an illustrative planner calculation for the entered dimensions, not a site measurement. Real walls can be out of square, so mark the axis on the floor and check the layout before laying.

1. Open the 2D planner, choose Rectangle and enter a width of 3.1 m and a length of 2.4 m.
2. Enter the 60 × 60 cm format and a 2 mm joint; leave the perimeter gap at 5 mm.
3. Pattern: Straight lay, starting point: From the corner. The planner shows 15 full and 9 cut pieces and an 80 mm strip along one wall.
4. Click “Compare starting positions”. The table shows From the corner, Piece in the centre, Grout line in the centre and Best shift with the number of full and cut pieces, the narrowest cut, the asymmetry and the purchase quantity.
5. Pick a variant, check the drawing and export a PDF with the drawing and the cut list.

5. A balanced layout or the lowest consumption

In the comparison the planner marks the best of the tested variants in this order: first as few thin edges as possible, then fewer pieces to buy, then fewer cuts and only then symmetry. In this example that is From the corner with 24 pieces (15 full and 9 cut). Grout line in the centre also needs 24 pieces (8 full and 16 cut) but has equal edges at opposite walls, while Piece in the centre needs 35 pieces.

When the number of pieces is the same, the decision is about looks: starting at a wall means less cutting, a joint in the centre gives a symmetrical result. When a centred layout needs more tiles, decide whether balanced edges are worth the extra boxes – the “To buy” column shows it.

Common mistakes

Starting at the door or the straightest wall without checking the remainder at the opposite wall.
Centring “by the rule” without checking: for some dimensions it gives two thin cuts instead of one.
Measurements without the perimeter gap – the layout then does not match the real tiled area.
Forgetting the joint: 5 joints of 2 mm move the last cut by 10 mm.
Deciding on looks alone, without comparing the quantity in the “To buy” column.

Sources and assumptions

Layouts and figures were calculated with the 2D planner functions of this app. Recommendations on the smallest cut are not one uniform rule; follow the tile and adhesive manufacturers’ instructions.

How the app calculates quantities, allowances and packs (methodology)

Frequently asked questions

Should tiles always be laid from the centre of the room?

No. Centring gives equal edges, but for some dimensions also two thin cuts. Compare From the corner, Piece in the centre and Grout line in the centre and choose the variant without thin strips.

How thin can an edge cut be?

A common recommendation is no cut smaller than half a tile. The planner reports cuts narrower than the “Narrow cut below” threshold, 50 mm by default, and you can change the threshold.

Does the starting point change the number of tiles?

It can. In the 3.1 × 2.4 m example with 60 × 60 cm tiles, From the corner and Grout line in the centre need 24 pieces and Piece in the centre 35 pieces, before the allowance.