Cut tile to a straight line along the channel, slightly wider than the frame, and keep cut edges at the ends of the run rather than mid-channel. For tile-insert drains, cut a separate piece for the insert tray and finish its edges properly.
Standard grate installation
- Lay full tiles up to the channel, then cut the last row to the channel line.
- Leave a consistent joint between the tile edge and the frame — do not butt tight.
- Position cut edges at the ends of the drain run where possible; a cut edge running along the visible length of the channel is more noticeable.
- Check the cut line is straight — a wavy line against a straight channel is very visible.
Tile-insert installation
| Step | Key point |
|---|---|
| Measure the tray | Cut to the tray dimensions, not the channel opening |
| Allow tolerance | Small gap at the edges so water can enter |
| Finish the edges | Cut faces of stone should be sealed and eased |
| Check thickness | The insert must sit flush with the surrounding tile |
| Test the fit | Dry-fit before final setting |
Large-format tile and stone
Large-format tile is the main reason linear drains are specified — the whole floor can run to a single straight line instead of being cut to four falls. The trade-off is that any error in the cut line is very visible over a long run.
- Cut with the tile supported on both sides to avoid chipping.
- For stone, cut and finish the edge properly — unsealed cut faces absorb water.
- Test-fit the tile against the frame before the adhesive sets.
- Protect polished stone at the drain during installation.
Related: tile-insert drains · natural stone floors