Octagon and Dot Mosaic — 2 inch sheet
Octagon and dot is the classic small-format mosaic pattern: 2"x2" octagons paired with a tiny square cabochon dot set at 45 degrees in each corner gap, pre-mounted on 12"x12" mesh sheets for straightforward installation. It is the reference size for this layout in the US market, most familiar from unglazed porcelain bathroom floors.
Last updated: 2026-07-19
Octagon and Dot Mosaic — 2 inch sheet
Opuslay — tile layout worksheet- Room:
- 3 m × 2.5 m
- Units:
- Metric (cm / m²)
- Anchor:
- Left · Top
- Layout angle:
- Straight
- Tile colours:
- Single colour
Material breakdown
| Format | Qty / Pattern | Share | Qty / Room | Area / Room |
|---|---|---|---|---|
| 30.48x30.48 cm | 1 | 100.0% | 90 | 7.50 m² |
| Total | 1 | 100% | 90 | 7.50 m² |
What you'll need to buy
Tiles to buy
| 30.48x30.48 cm | 93 tiles | 8.64 m² |
Total 93 tiles · 8.64 m² (incl. 15% cuts & breakage)
- Thin-set adhesive: ≈ 24.4 kg (2 × 50 lb bags) — recommended trowel: 10mm notch
- Grout — the tile sets the joint width, not you:
- ≈ 2.2 kg (1 × 10 lb bag) — 3mm joint, rectified / tight-set tile
- ≈ 3.7 kg (1 × 10 lb 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: the 25 lb bag is the usual size (10 lb 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 Octagon and Dot Mosaic — 2 inch sheet layout to your moodboard, or send the link to your tiler — it reopens with your room dimensions.
About the Octagon and Dot Mosaic — 2 inch sheet
The pairing of an octagon module with a small square insert is a long-standing floor pattern, and in the US it became a fixture of early-20th-century bathrooms: unglazed porcelain mosaic, usually white with a black or contrasting dot, was tied to the era's push for visibly clean, hygienic bathroom surfaces.
That small-format, mesh-mounted sheet is still how the pattern is sold today, and interest in it has been picking up again in recent bathroom and entryway remodels alongside other vintage-inspired mosaics. A larger single-tile version of the same octagon-and-dot idea also exists, built around a big octagon and a proportionally larger cabochon, but it serves a different, more contemporary large-format look rather than this classic mosaic sheet.
Frequently Asked Questions
What is octagon and dot tile?
A mosaic pattern made of small octagon-shaped tiles with a tiny square dot (cabochon), set at 45 degrees, filling the gap where four octagons meet. It is usually sold pre-mounted on mesh sheets for easy installation.
What size is a standard octagon and dot tile?
2"x2" octagons on 12"x12" mesh sheets are the standard, most widely available size in the US. Larger single-tile octagon formats exist but are a distinct, more contemporary product.
Where is octagon and dot tile typically used?
Mostly bathroom floors, shower floors, and entryways — small-format mosaics like this handle wet, high-traffic areas well, and the extra grout lines from all the small pieces add slip resistance underfoot.
What grout joint should I use for octagon and dot mosaic?
A 1/8" grout joint is the typical recommendation for this size of mesh-mounted mosaic sheet.
Is octagon and dot tile still popular?
Yes — it never fully went away, and it has seen renewed interest recently as part of the broader trend back toward vintage-inspired, patterned bathroom floors.