400x300 Windmill Tile Pattern
The windmill pattern turns four rectangles around a single small square, so the whole layout reads as a set of pinwheels boxed inside a grid. The square is not a free choice: its side has to equal the rectangle's length minus its width, which is why a 400x300 mm tile closes onto exactly 100x100 mm. At this scale the pattern suits open floors, where the large format keeps the grout lines sparse and the turning module still reads from standing height. For the tighter version of the same module, see the 200x150 windmill; for the imperial original, see the standard windmill.
Last updated: 2026-08-03
400x300 windmill
Opuslay — tile layout worksheet- Room:
- 3 m × 2.5 m
- Units:
- Metric (mm / m²)
- Anchor:
- Left · Top
- Layout angle:
- Straight
- Tile colours:
- Single colour
Material breakdown
| Format | Qty / Pattern | Share | Qty / Room | Area / Room |
|---|---|---|---|---|
| 300x400 mm | 2 | 96.0% | 70 | 7.20 m² |
| 100x100 mm | 1 | 4.0% | 30 | 0.30 m² |
| Total | 3 | 100% | 100 | 7.50 m² |
What you'll need to buy
Tiles to buy
| 100x100 mm | 32 tiles | 0.32 m² |
| 300x400 mm | 65 tiles | 7.80 m² |
Total 97 tiles · 8.12 m² (incl. 8% cuts & breakage)
Adhesive & grout
- Thin-set adhesive: ≈ 24.4 kg (2 × 20 kg bags) — recommended trowel: 10mm notch
- Grout — the tile sets the joint width, not you:
- ≈ 2.2 kg (1 × 2.5 kg bag) — 3mm joint, rectified / tight-set tile
- ≈ 3.6 kg (1 × 10 kg bag) — 5mm joint, natural or non-rectified tile
Adhesive: allow a little over on an uneven substrate, or if you back-butter large tiles — both eat more than a flat bed.
Grout: bag sizes vary by brand — 10 kg is a common one (2.5 kg for small jobs). Buy it in one go and stick to a single bag size: bags from different batches can dry to slightly different shades.
It's the tile that decides the joint, not the setter — dry-lay a section to find your width. Assumes 9.5mm tile depth; adjust for your product — thicker tiles need more.
Share & export
Save the 400x300 windmill layout to your moodboard, or send the link to your tiler — it reopens with your room dimensions.
See the standard windmill (6x6 square, 6x12 rectangles)See the 8x8 & 4x12 windmill (16x16 module)See the small metric windmill (200x150 rectangles, 50x50 square)